dlsch_demodulation.c 282 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
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 * the OAI Public License, Version 1.1  (the "License"); you may not use this file
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 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
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/*! \file PHY/LTE_TRANSPORT/dlsch_demodulation.c
 * \brief Top-level routines for demodulating the PDSCH physical channel from 36-211, V8.6 2009-03
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 * \author R. Knopp, F. Kaltenberger,A. Bhamri, S. Aubert, X. Xiang
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 * \date 2011
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 * \version 0.1
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 * \company Eurecom
 * \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr,ankit.bhamri@eurecom.fr,sebastien.aubert@eurecom.fr
 * \note
 * \warning
 */
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#include "PHY/defs_UE.h"
#include "PHY/phy_extern_ue.h"
#include "SCHED_UE/sched_UE.h"
#include "transport_ue.h"
#include "transport_proto_ue.h"
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#include "PHY/sse_intrin.h"
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#include "T.h"
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#include<stdio.h>
#include<math.h>
#include <stdlib.h>
#include <string.h>
#include <lapacke_utils.h>
#include <lapacke.h>
#include <cblas.h>
#include "linear_preprocessing_rec.h"
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#define NOCYGWIN_STATIC
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//#define DEBUG_MMSE

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/* dynamic shift for LLR computation for TM3/4
 * set as command line argument, see lte-softmodem.c
 * default value: 0
 */
int16_t dlsch_demod_shift = 0;
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int16_t interf_unaw_shift = 13;
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//#define DEBUG_HARQ

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//#define DEBUG_PHY 1
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//#define DEBUG_DLSCH_DEMOD 1
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//#define DISABLE_LOG_X
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// [MCS][i_mod (0,1,2) = (2,4,6)]
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unsigned char offset_mumimo_llr_drange_fix=0;
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//inferference-free case
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unsigned char interf_unaw_shift_tm4_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
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                                             1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;
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unsigned char interf_unaw_shift_tm1_mcs[29]={5, 5, 4, 3, 3, 3, 2, 2, 4, 4, 2, 3, 3, 3, 1, 1,
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                                             0, 1, 1, 2, 5, 4, 4, 6, 5, 1, 0, 5, 6} ; // mcs 21, 26, 28 seem to be errorneous
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/*
//original values from sebastion + same hand tuning
unsigned char offset_mumimo_llr_drange[29][3]={{8,8,8},{7,7,7},{7,7,7},{7,7,7},{6,6,6},{6,6,6},{6,6,6},{5,5,5},{4,4,4},{1,2,4}, // QPSK
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{5,5,4},{5,5,5},{5,5,5},{3,3,3},{2,2,2},{2,2,2},{2,2,2}, // 16-QAM
{2,2,1},{3,3,3},{3,3,3},{3,3,1},{2,2,2},{2,2,2},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0}}; //64-QAM
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*/
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 /*
 //first optimization try
 unsigned char offset_mumimo_llr_drange[29][3]={{7, 8, 7},{6, 6, 7},{6, 6, 7},{6, 6, 6},{5, 6, 6},{5, 5, 6},{5, 5, 6},{4, 5, 4},{4, 3, 4},{3, 2, 2},{6, 5, 5},{5, 4, 4},{5, 5, 4},{3, 3, 2},{2, 2, 1},{2, 1, 1},{2, 2, 2},{3, 3, 3},{3, 3, 2},{3, 3, 2},{3, 2, 1},{2, 2, 2},{2, 2, 2},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};
 */
 //second optimization try
 /*
   unsigned char offset_mumimo_llr_drange[29][3]={{5, 8, 7},{4, 6, 8},{3, 6, 7},{7, 7, 6},{4, 7, 8},{4, 7, 4},{6, 6, 6},{3, 6, 6},{3, 6, 6},{1, 3, 4},{1, 1, 0},{3, 3, 2},{3, 4, 1},{4, 0, 1},{4, 2, 2},{3, 1, 2},{2, 1, 0},{2, 1, 1},{1, 0, 1},{1, 0, 1},{0, 0, 0},{1, 0, 0},{0, 0, 0},{0, 1, 0},{1, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};  w
 */
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unsigned char offset_mumimo_llr_drange[29][3]= {{0, 6, 5},{0, 4, 5},{0, 4, 5},{0, 5, 4},{0, 5, 6},{0, 5, 3},{0, 4, 4},{0, 4, 4},{0, 3, 3},{0, 1, 2},{1, 1, 0},{1, 3, 2},{3, 4, 1},{2, 0, 0},{2, 2, 2},{1, 1, 1},{2, 1, 0},{2, 1, 1},{1, 0, 1},{1, 0, 1},{0, 0, 0},{1, 0, 0},{0, 0, 0},{0, 1, 0},{1, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0},{0, 0, 0}};
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extern void print_shorts(char *s,int16_t *x);
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int rx_pdsch(PHY_VARS_UE *ue,
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             PDSCH_t type,
             unsigned char eNB_id,
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             unsigned char eNB_id_i, //if this == ue->n_connected_eNB, we assume MU interference
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             uint32_t frame,
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             uint8_t subframe,
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             unsigned char symbol,
             unsigned char first_symbol_flag,
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             RX_type_t rx_type,
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             unsigned char i_mod,
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             unsigned char harq_pid)
{

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  LTE_UE_COMMON *common_vars  = &ue->common_vars;
  LTE_UE_PDSCH **pdsch_vars;
  LTE_DL_FRAME_PARMS *frame_parms    = &ue->frame_parms;
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  PHY_MEASUREMENTS *measurements = &ue->measurements;
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  LTE_UE_DLSCH_t   **dlsch;
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  int avg[4];
  int avg_0[2];
  int avg_1[2];
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  unsigned short mmse_flag=0;
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#if UE_TIMING_TRACE
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  uint8_t slot = 0;
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#endif
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  unsigned char aatx,aarx;
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  unsigned short nb_rb = 0, round;
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  int avgs = 0, rb;
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  LTE_DL_UE_HARQ_t *dlsch0_harq,*dlsch1_harq = 0;
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  uint8_t beamforming_mode;
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  uint32_t *rballoc;
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  int32_t **rxdataF_comp_ptr;
  int32_t **dl_ch_mag_ptr;
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  int32_t codeword_TB0 = -1;
  int32_t codeword_TB1 = -1;
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  switch (type) {
  case SI_PDSCH:
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    pdsch_vars = &ue->pdsch_vars_SI[eNB_id];
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    dlsch = &ue->dlsch_SI[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
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    beamforming_mode  = 0;
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    break;
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  case RA_PDSCH:
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    pdsch_vars = &ue->pdsch_vars_ra[eNB_id];
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    dlsch = &ue->dlsch_ra[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
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    beamforming_mode  = 0;
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    break;
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  case PDSCH:
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    pdsch_vars = ue->pdsch_vars[ue->current_thread_id[subframe]];
    dlsch = ue->dlsch[ue->current_thread_id[subframe]][eNB_id];
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    //printf("status TB0 = %d, status TB1 = %d \n", dlsch[0]->harq_processes[harq_pid]->status, dlsch[1]->harq_processes[harq_pid]->status);
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    LOG_D(PHY,"AbsSubframe %d.%d / Sym %d harq_pid %d,  harq status %d.%d \n",
                   frame,subframe,symbol,harq_pid,
                   dlsch[0]->harq_processes[harq_pid]->status,
                   dlsch[1]->harq_processes[harq_pid]->status);

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    if ((dlsch[0]->harq_processes[harq_pid]->status == ACTIVE) &&
        (dlsch[1]->harq_processes[harq_pid]->status == ACTIVE)){
      codeword_TB0 = dlsch[0]->harq_processes[harq_pid]->codeword;
      codeword_TB1 = dlsch[1]->harq_processes[harq_pid]->codeword;
      dlsch0_harq = dlsch[codeword_TB0]->harq_processes[harq_pid];
      dlsch1_harq = dlsch[codeword_TB1]->harq_processes[harq_pid];
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#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming both TBs are active\n");
#endif
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    }
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     else if ((dlsch[0]->harq_processes[harq_pid]->status == ACTIVE) &&
              (dlsch[1]->harq_processes[harq_pid]->status != ACTIVE) ) {
      codeword_TB0 = dlsch[0]->harq_processes[harq_pid]->codeword;
      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
      dlsch1_harq = NULL;
      codeword_TB1 = -1;
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#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming only TB0 is active\n");
#endif
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    }
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     else if ((dlsch[0]->harq_processes[harq_pid]->status != ACTIVE) &&
              (dlsch[1]->harq_processes[harq_pid]->status == ACTIVE) ){
      codeword_TB1 = dlsch[1]->harq_processes[harq_pid]->codeword;
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      dlsch0_harq  = dlsch[1]->harq_processes[harq_pid];
      dlsch1_harq  = NULL;
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      codeword_TB0 = -1;
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#ifdef DEBUG_HARQ
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      printf("[DEMOD] I am assuming only TB1 is active, it is in cw %d\n", dlsch0_harq->codeword);
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#endif
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    }
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    else {
      LOG_E(PHY,"[UE][FATAL] Frame %d subframe %d: no active DLSCH\n",ue->proc.proc_rxtx[0].frame_rx,subframe);
      return(-1);
    }
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    beamforming_mode  = ue->transmission_mode[eNB_id]<7?0:ue->transmission_mode[eNB_id];
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    break;

  default:
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    LOG_E(PHY,"[UE][FATAL] Frame %d subframe %d: Unknown PDSCH format %d\n",ue->proc.proc_rxtx[0].frame_rx,subframe,type);
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    return(-1);
    break;
  }
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#ifdef DEBUG_HARQ
  printf("[DEMOD] MIMO mode = %d\n", dlsch0_harq->mimo_mode);
  printf("[DEMOD] cw for TB0 = %d, cw for TB1 = %d\n", codeword_TB0, codeword_TB1);
#endif
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  DevAssert(dlsch0_harq);
  round = dlsch0_harq->round;
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  //printf("round = %d\n", round);
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  if (eNB_id > 2) {
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    LOG_W(PHY,"dlsch_demodulation.c: Illegal eNB_id %d\n",eNB_id);
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    return(-1);
  }
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  if (!common_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null common_vars\n");
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    return(-1);
  }

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  if (!dlsch[0]) {
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    LOG_W(PHY,"dlsch_demodulation.c: Null dlsch_ue pointer\n");
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    return(-1);
  }

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  if (!pdsch_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null pdsch_vars pointer\n");
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    return(-1);
  }
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  if (!frame_parms) {
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    LOG_W(PHY,"dlsch_demodulation.c: Null frame_parms\n");
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    return(-1);
  }
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  if (((frame_parms->Ncp == NORMAL) && (symbol>=7)) ||
      ((frame_parms->Ncp == EXTENDED) && (symbol>=6)))
    rballoc = dlsch0_harq->rb_alloc_odd;
  else
    rballoc = dlsch0_harq->rb_alloc_even;
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  if (dlsch0_harq->mimo_mode>DUALSTREAM_PUSCH_PRECODING) {
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    LOG_E(PHY,"This transmission mode is not yet supported!\n");
    return(-1);
  }
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  if ((dlsch0_harq->mimo_mode==LARGE_CDD) || ((dlsch0_harq->mimo_mode>=DUALSTREAM_UNIFORM_PRECODING1) && (dlsch0_harq->mimo_mode<=DUALSTREAM_PUSCH_PRECODING)))  {
    DevAssert(dlsch1_harq);
    if (eNB_id!=eNB_id_i) {
      LOG_E(PHY,"TM3/TM4 requires to set eNB_id==eNB_id_i!\n");
      return(-1);
    }
  }

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#if UE_TIMING_TRACE
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  if(symbol > ue->frame_parms.symbols_per_tti>>1)
  {
      slot = 1;
  }
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#endif

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#ifdef DEBUG_HARQ
  printf("Demod  dlsch0_harq->pmi_alloc %d\n",  dlsch0_harq->pmi_alloc);
#endif
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  if (frame_parms->nb_antenna_ports_eNB>1 && beamforming_mode==0) {
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#ifdef DEBUG_DLSCH_MOD
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    LOG_I(PHY,"dlsch: using pmi %x (%p), rb_alloc %x\n",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),dlsch[0],dlsch0_harq->rb_alloc_even[0]);
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#endif
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#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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    nb_rb = dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                   common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                   pdsch_vars[eNB_id]->rxdataF_ext,
                                   pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                   dlsch0_harq->pmi_alloc,
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                                   pdsch_vars[eNB_id]->pmi_ext,
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                                   rballoc,
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                                   symbol,
                                   subframe,
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                                   ue->high_speed_flag,
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                                   frame_parms,
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                                   dlsch0_harq->mimo_mode);
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#ifdef DEBUG_DLSCH_MOD
      printf("dlsch: using pmi %lx, rb_alloc %x, pmi_ext ",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),*rballoc);
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       for (rb=0;rb<nb_rb;rb++)
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          printf("%d",pdsch_vars[eNB_id]->pmi_ext[rb]);
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       printf("\n");
#endif
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   if (rx_type >= rx_IC_single_stream) {
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      if (eNB_id_i<ue->n_connected_eNB) // we are in TM5
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      nb_rb = dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                       common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i],
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                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                       dlsch0_harq->pmi_alloc,
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                                       pdsch_vars[eNB_id_i]->pmi_ext,
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                                       rballoc,
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                                       symbol,
                                       subframe,
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                                       ue->high_speed_flag,
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                                       frame_parms,
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                                       dlsch0_harq->mimo_mode);
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      else
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        nb_rb = dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                       common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                       dlsch0_harq->pmi_alloc,
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                                       pdsch_vars[eNB_id_i]->pmi_ext,
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                                       rballoc,
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                                       symbol,
                                       subframe,
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                                       ue->high_speed_flag,
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                                       frame_parms,
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                                       dlsch0_harq->mimo_mode);
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    }
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  } else if (beamforming_mode==0) { //else if nb_antennas_ports_eNB==1 && beamforming_mode == 0
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    nb_rb = dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                     common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                     pdsch_vars[eNB_id]->rxdataF_ext,
                                     pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                     dlsch0_harq->pmi_alloc,
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                                     pdsch_vars[eNB_id]->pmi_ext,
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                                     rballoc,
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                                     symbol,
                                     subframe,
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                                     ue->high_speed_flag,
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                                     frame_parms);

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   if (rx_type==rx_IC_single_stream) {
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     if (eNB_id_i<ue->n_connected_eNB)
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        nb_rb = dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                         common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id_i],
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                                         pdsch_vars[eNB_id_i]->rxdataF_ext,
                                         pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                         dlsch0_harq->pmi_alloc,
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                                         pdsch_vars[eNB_id_i]->pmi_ext,
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                                         rballoc,
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                                         symbol,
                                         subframe,
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                                         ue->high_speed_flag,
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                                         frame_parms);
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      else
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        nb_rb = dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
                                         common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id],
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                                         pdsch_vars[eNB_id_i]->rxdataF_ext,
                                         pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                         dlsch0_harq->pmi_alloc,
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                                         pdsch_vars[eNB_id_i]->pmi_ext,
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                                         rballoc,
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                                         symbol,
                                         subframe,
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                                         ue->high_speed_flag,
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                                         frame_parms);
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    }
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  } else if (beamforming_mode==7) { //else if beamforming_mode == 7
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    nb_rb = dlsch_extract_rbs_TM7(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF,
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                                  pdsch_vars[eNB_id]->dl_bf_ch_estimates,
                                  pdsch_vars[eNB_id]->rxdataF_ext,
                                  pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
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                                  rballoc,
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                                  symbol,
                                  subframe,
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                                  ue->high_speed_flag,
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                                  frame_parms);
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  } else if(beamforming_mode>7) {
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    LOG_W(PHY,"dlsch_demodulation: beamforming mode not supported yet.\n");
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  }
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  //printf("nb_rb = %d, eNB_id %d\n",nb_rb,eNB_id);
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  if (nb_rb==0) {
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    //    LOG_D(PHY,"dlsch_demodulation.c: nb_rb=0\n");
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    return(-1);
  }
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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
    printf("[AbsSFN %d.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction %5.2f \n",frame,subframe,slot,
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            symbol,ue->high_speed_flag,type,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction  %5.2f \n",frame,subframe,slot,symbol,
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            ue->high_speed_flag,type,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
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#endif

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#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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  aatx = frame_parms->nb_antenna_ports_eNB;
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  aarx = frame_parms->nb_antennas_rx;

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  dlsch_scale_channel(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                      frame_parms,
                      dlsch,
                      symbol,
                      nb_rb);
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  if ((dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) &&
      (rx_type==rx_IC_single_stream) &&
      (eNB_id_i==ue->n_connected_eNB) &&
      (dlsch0_harq->dl_power_off==0)
     )  // TM5 two-user
  {
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    dlsch_scale_channel(pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                        frame_parms,
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                        dlsch,
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                        symbol,
                        nb_rb);
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  }
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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d: Channel Scale %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d: Channel Scale  %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif

#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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  if (first_symbol_flag==1) {
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    if (beamforming_mode==0){
      if (dlsch0_harq->mimo_mode<LARGE_CDD) {
        dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                           frame_parms,
                           avg,
                           symbol,
                           nb_rb);
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        avgs = 0;
        for (aatx=0;aatx<frame_parms->nb_antenna_ports_eNB;aatx++)
          for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
            avgs = cmax(avgs,avg[(aatx<<1)+aarx]);

        pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2)+1;
     }
     else if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
           ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
            (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING)))
     {
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       dlsch_channel_level_TM34(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                  frame_parms,
                                  pdsch_vars[eNB_id]->pmi_ext,
                                  avg_0,
                                  avg_1,
                                  symbol,
                                  nb_rb,
                                  mmse_flag,
                                  dlsch0_harq->mimo_mode);
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      LOG_D(PHY,"Channel Level TM34  avg_0 %d, avg_1 %d, rx_type %d, rx_standard %d, dlsch_demod_shift %d \n", avg_0[0],
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              avg_1[0], rx_type, rx_standard, dlsch_demod_shift);
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        if (rx_type>rx_standard) {
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          avg_0[0] = (log2_approx(avg_0[0])/2) + dlsch_demod_shift;// + 2 ;//+ 4;
          avg_1[0] = (log2_approx(avg_1[0])/2) + dlsch_demod_shift;// + 2 ;//+ 4;
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          pdsch_vars[eNB_id]->log2_maxh0 = cmax(avg_0[0],0);
          pdsch_vars[eNB_id]->log2_maxh1 = cmax(avg_1[0],0);
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         // printf("dlsch_demod_shift  %d\n", dlsch_demod_shift);
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         }
          else {
          avg_0[0] = (log2_approx(avg_0[0])/2) - 13 + interf_unaw_shift;
          avg_1[0] = (log2_approx(avg_1[0])/2) - 13 + interf_unaw_shift;
          pdsch_vars[eNB_id]->log2_maxh0 = cmax(avg_0[0],0);
          pdsch_vars[eNB_id]->log2_maxh1 = cmax(avg_1[0],0);
        }
      }
      else if (dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) {// single-layer precoding (TM5, TM6)
        if ((rx_type==rx_IC_single_stream) && (eNB_id_i==ue->n_connected_eNB) && (dlsch0_harq->dl_power_off==0)) {
            dlsch_channel_level_TM56(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                frame_parms,
                                pdsch_vars[eNB_id]->pmi_ext,
                                avg,
                                symbol,
                                nb_rb);
            avg[0] = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(i_mod>>1)-1];
            pdsch_vars[eNB_id]->log2_maxh = cmax(avg[0],0);
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        }
        else if (dlsch0_harq->dl_power_off==1) { //TM6
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          dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                   frame_parms,
                                   avg,
                                   symbol,
                                   nb_rb);
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          avgs = 0;
          for (aatx=0;aatx<frame_parms->nb_antenna_ports_eNB;aatx++)
            for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
              avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
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          pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2) + 1;
          pdsch_vars[eNB_id]->log2_maxh++;
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        }
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      }
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    }
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    else if (beamforming_mode==7)
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       dlsch_channel_level_TM7(pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
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                              frame_parms,
                              avg,
                              symbol,
                              nb_rb);
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#ifdef UE_DEBUG_TRACE
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    LOG_D(PHY,"[DLSCH] AbsSubframe %d.%d log2_maxh = %d [log2_maxh0 %d log2_maxh1 %d] (%d,%d)\n",
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            frame%1024,subframe, pdsch_vars[eNB_id]->log2_maxh,
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                                                 pdsch_vars[eNB_id]->log2_maxh0,
                                                 pdsch_vars[eNB_id]->log2_maxh1,
                                                 avg[0],avgs);
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    //LOG_D(PHY,"[DLSCH] mimo_mode = %d\n", dlsch0_harq->mimo_mode);
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#endif
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    //wait until pdcch is decoded
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    //proc->channel_level = 1;
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  }
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  /*
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  uint32_t wait = 0;
  while(proc->channel_level == 0)
  {
      usleep(1);
      wait++;
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  }
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  */
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#if T_TRACER
    if (type == PDSCH)
    {
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      T(T_UE_PHY_PDSCH_ENERGY, T_INT(eNB_id), T_INT(frame%1024), T_INT(subframe),
                               T_INT(avg[0]), T_INT(avg[1]),     T_INT(avg[2]),   T_INT(avg[3]));
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    }
#endif
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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level %5.2f \n",frame,subframe,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level  %5.2f \n",frame,subframe,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif


#if UE_TIMING_TRACE
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    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#endif
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  if (rx_type==rx_IC_dual_stream && mmse_flag==1){

    precode_channel_est(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                        frame_parms,
                        pdsch_vars[eNB_id],
                        symbol,
                        nb_rb,
                        dlsch0_harq->mimo_mode);

   mmse_processing_oai(pdsch_vars[eNB_id],
                        frame_parms,
                        measurements,
                        first_symbol_flag,
                        dlsch0_harq->mimo_mode,
                        mmse_flag,
                        0.0,
                        symbol,
                        nb_rb);
  }

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// Now channel compensation
  if (dlsch0_harq->mimo_mode<LARGE_CDD) {
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    dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
                               pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_magb0,
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               (aatx>1) ? pdsch_vars[eNB_id]->rho : NULL,
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                               frame_parms,
                               symbol,
                               first_symbol_flag,
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                               dlsch0_harq->Qm,
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                               nb_rb,
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                               pdsch_vars[eNB_id]->log2_maxh,
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                               measurements); // log2_maxh+I0_shift
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    if (symbol == 5) {
     LOG_M("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
    }
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    if ((rx_type==rx_IC_single_stream) &&
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        (eNB_id_i<ue->n_connected_eNB)) {
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         dlsch_channel_compensation(pdsch_vars[eNB_id_i]->rxdataF_ext,
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                                 pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                 pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                 pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                 (aatx>1) ? pdsch_vars[eNB_id_i]->rho : NULL,
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                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 i_mod,
                                 nb_rb,
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                                 pdsch_vars[eNB_id]->log2_maxh,
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                                 measurements); // log2_maxh+I0_shift
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      if (symbol == 5) {
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        LOG_M("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
        LOG_M("rxF_comp_i.m","rxF_c_i",&pdsch_vars[eNB_id_i]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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      }
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      dlsch_dual_stream_correlation(frame_parms,
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                                    symbol,
                                    nb_rb,
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                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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                                    pdsch_vars[eNB_id]->log2_maxh);
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    }
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  } else if ((dlsch0_harq->mimo_mode == LARGE_CDD) || ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
            (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING))){
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      dlsch_channel_compensation_TM34(frame_parms,
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                                     pdsch_vars[eNB_id],
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                                     measurements,
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                                     eNB_id,
                                     symbol,
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                                     dlsch0_harq->Qm,
                                     dlsch1_harq->Qm,
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                                     harq_pid,
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                                     dlsch0_harq->round,
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                                     dlsch0_harq->mimo_mode,
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                                     nb_rb,
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                                     mmse_flag,
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                                     pdsch_vars[eNB_id]->log2_maxh0,
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                                     pdsch_vars[eNB_id]->log2_maxh1);
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      if (symbol == 5) {
	LOG_M("rxF_comp_d00.m","rxF_c_d00",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
	LOG_M("rxF_comp_d01.m","rxF_c_d01",&pdsch_vars[eNB_id]->rxdataF_comp0[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rxF_comp_d10.m","rxF_c_d10",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rxF_comp_d11.m","rxF_c_d11",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
      }
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      // compute correlation between signal and interference channels (rho12 and rho21)
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      dlsch_dual_stream_correlation(frame_parms, // this is doing h11'*h12 and h21'*h22
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                                    symbol,
                                    nb_rb,
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                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    &(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
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                                    pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                    pdsch_vars[eNB_id]->log2_maxh0);
        //printf("rho stream1 =%d\n", &pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round] );
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      //to be optimized (just take complex conjugate)
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      dlsch_dual_stream_correlation(frame_parms, // this is doing h12'*h11 and h22'*h21
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                                    symbol,
                                    nb_rb,
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                                    &(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                    pdsch_vars[eNB_id]->log2_maxh1);
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    //  printf("rho stream2 =%d\n",&pdsch_vars[eNB_id]->dl_ch_rho2_ext );
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      //printf("TM3 log2_maxh : %d\n",pdsch_vars[eNB_id]->log2_maxh);
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      if (symbol == 5) {
	LOG_M("rho0_0.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
	LOG_M("rho2_0.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rho0_1.m.m","rho0_1",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
	LOG_M("rho2_1.m","rho2_1",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
      }
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    } else if (dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) {// single-layer precoding (TM5, TM6)
        if ((rx_type==rx_IC_single_stream) && (eNB_id_i==ue->n_connected_eNB) && (dlsch0_harq->dl_power_off==0)) {
          dlsch_channel_compensation_TM56(pdsch_vars[eNB_id]->rxdataF_ext,
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                                      pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                      pdsch_vars[eNB_id]->dl_ch_mag0,
                                      pdsch_vars[eNB_id]->dl_ch_magb0,
                                      pdsch_vars[eNB_id]->rxdataF_comp0,
                                      pdsch_vars[eNB_id]->pmi_ext,
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                                      frame_parms,
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                                      measurements,
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                                      eNB_id,
                                      symbol,
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                                      dlsch0_harq->Qm,
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                                      nb_rb,
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                                      pdsch_vars[eNB_id]->log2_maxh,
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                                      dlsch0_harq->dl_power_off);
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        for (rb=0; rb<nb_rb; rb++) {
          switch(pdsch_vars[eNB_id]->pmi_ext[rb]) {
          case 0:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=1;
            break;
         case 1:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=0;
            break;
         case 2:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=3;
            break;
          case 3:
            pdsch_vars[eNB_id_i]->pmi_ext[rb]=2;
            break;
          }
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       //  if (rb==0)
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        //    printf("pmi %d, pmi_i %d\n",pdsch_vars[eNB_id]->pmi_ext[rb],pdsch_vars[eNB_id_i]->pmi_ext[rb]);
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      }
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      dlsch_channel_compensation_TM56(pdsch_vars[eNB_id_i]->rxdataF_ext,
                                      pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                      pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                      pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                      pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                      pdsch_vars[eNB_id_i]->pmi_ext,
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                                      frame_parms,
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                                      measurements,
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                                      eNB_id_i,
                                      symbol,
                                      i_mod,
                                      nb_rb,
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                                      pdsch_vars[eNB_id]->log2_maxh,
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                                      dlsch0_harq->dl_power_off);
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      if (symbol==5) {
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        LOG_M("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
	LOG_M("rxF_comp_i.m","rxF_c_i",&pdsch_vars[eNB_id_i]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
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      }
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      dlsch_dual_stream_correlation(frame_parms,
                                    symbol,
                                    nb_rb,
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                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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                                    pdsch_vars[eNB_id]->log2_maxh);
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    }  else if (dlsch0_harq->dl_power_off==1)  {
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      dlsch_channel_compensation_TM56(pdsch_vars[eNB_id]->rxdataF_ext,
                                      pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                      pdsch_vars[eNB_id]->dl_ch_mag0,
                                      pdsch_vars[eNB_id]->dl_ch_magb0,
                                      pdsch_vars[eNB_id]->rxdataF_comp0,
                                      pdsch_vars[eNB_id]->pmi_ext,
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                                      frame_parms,
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                                      measurements,
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                                      eNB_id,
                                      symbol,
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                                      dlsch0_harq->Qm,
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                                      nb_rb,
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                                      pdsch_vars[eNB_id]->log2_maxh,
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                                      1);
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      }


    } else if (dlsch0_harq->mimo_mode==TM7) { //TM7

      dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
                                 pdsch_vars[eNB_id]->dl_bf_ch_estimates_ext,
                                 pdsch_vars[eNB_id]->dl_ch_mag0,
                                 pdsch_vars[eNB_id]->dl_ch_magb0,
                                 pdsch_vars[eNB_id]->rxdataF_comp0,
                                 (aatx>1) ? pdsch_vars[eNB_id]->rho : NULL,
                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 get_Qm(dlsch0_harq->mcs),
                                 nb_rb,
                                 //9,
                                 pdsch_vars[eNB_id]->log2_maxh,
                                 measurements); // log2_maxh+I0_shift
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  }

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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp %5.2f \n",frame,subframe,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp  %5.2f \n",frame,subframe,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif
782
// MRC
783
#if UE_TIMING_TRACE
784
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
785
#endif
786 787

   if (frame_parms->nb_antennas_rx > 1) {
788
    if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
789
        ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
790
         (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING))){  // TM3 or TM4
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791
      if (frame_parms->nb_antenna_ports_eNB == 2) {
792
        dlsch_detection_mrc_TM34(frame_parms,
793
                                 pdsch_vars[eNB_id],
794
                                 harq_pid,
795
                                 dlsch0_harq->round,
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                                 symbol,
                                 nb_rb,
                                 1);
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	if (symbol == 5) {
	  LOG_M("rho0_mrc.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
	  LOG_M("rho2_mrc.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
        }
803
      }
804
    } else {
805
      dlsch_detection_mrc(frame_parms,
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                          pdsch_vars[eNB_id]->rxdataF_comp0,
                          pdsch_vars[eNB_id_i]->rxdataF_comp0,
                          pdsch_vars[eNB_id]->rho,
809
                          pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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                          pdsch_vars[eNB_id]->dl_ch_mag0,
                          pdsch_vars[eNB_id]->dl_ch_magb0,
                          pdsch_vars[eNB_id_i]->dl_ch_mag0,
                          pdsch_vars[eNB_id_i]->dl_ch_magb0,
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                          symbol,
                          nb_rb,
816
                          rx_type==rx_IC_single_stream);
817 818 819 820 821
    }
  }
  //  printf("Combining");
  if ((dlsch0_harq->mimo_mode == SISO) ||
      ((dlsch0_harq->mimo_mode >= UNIFORM_PRECODING11) &&
822 823
       (dlsch0_harq->mimo_mode <= PUSCH_PRECODING0)) ||
       (dlsch0_harq->mimo_mode == TM7)) {
824 825
    /*
      dlsch_siso(frame_parms,
826 827
      pdsch_vars[eNB_id]->rxdataF_comp,
      pdsch_vars[eNB_id_i]->rxdataF_comp,
828 829 830 831 832
      symbol,
      nb_rb);
    */
  } else if (dlsch0_harq->mimo_mode == ALAMOUTI) {
    dlsch_alamouti(frame_parms,
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                   pdsch_vars[eNB_id]->rxdataF_comp0,
                   pdsch_vars[eNB_id]->dl_ch_mag0,
                   pdsch_vars[eNB_id]->dl_ch_magb0,
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                   symbol,
                   nb_rb);
838
  }
839

840
  //    printf("LLR");
841 842
  if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
      ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
843
       (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING)))  {
844
    rxdataF_comp_ptr = pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round];
845
    dl_ch_mag_ptr = pdsch_vars[eNB_id]->dl_ch_mag1[harq_pid][round];
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  }
  else {
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    rxdataF_comp_ptr = pdsch_vars[eNB_id_i]->rxdataF_comp0;
    dl_ch_mag_ptr = pdsch_vars[eNB_id_i]->dl_ch_mag0;
850
    //i_mod should have been passed as a parameter
851
  }
852

853
#if UE_TIMING_TRACE
854
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
855
#if DISABLE_LOG_X
856
    printf("[AbsSFN %d.%d] Slot%d Symbol %d: Channel Combine %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
857
#else
858
    LOG_I(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d: Channel Combine  %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
859 860 861 862
#endif
#endif

#if UE_TIMING_TRACE
863
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
864
#endif
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865
  //printf("LLR dlsch0_harq->Qm %d rx_type %d cw0 %d cw1 %d symbol %d \n",dlsch0_harq->Qm,rx_type,codeword_TB0,codeword_TB1,symbol);
866 867 868 869 870 871 872 873 874 875
  // compute LLRs
  // -> // compute @pointer where llrs should filled for this ofdm-symbol
  int8_t  *pllr_symbol_cw0;
  int8_t  *pllr_symbol_cw1;
  uint32_t llr_offset_symbol;
  llr_offset_symbol = pdsch_vars[eNB_id]->llr_offset[symbol];
  pllr_symbol_cw0  = (int8_t*)pdsch_vars[eNB_id]->llr[0];
  pllr_symbol_cw1  = (int8_t*)pdsch_vars[eNB_id]->llr[1];
  pllr_symbol_cw0 += llr_offset_symbol;
  pllr_symbol_cw1 += llr_offset_symbol;
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  /*
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  LOG_I(PHY,"compute LLRs [AbsSubframe %d.%d-%d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d @LLR Buff %p @LLR Buff(symb) %p\n",
878
             frame, subframe,symbol,
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             nb_rb,dlsch0_harq->Qm,
             pdsch_vars[eNB_id]->llr_length[symbol],
             pdsch_vars[eNB_id]->llr_offset[symbol],
             (int16_t*)pdsch_vars[eNB_id]->llr[0],
883
             pllr_symbol_cw0);
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884
  */
885
  switch (dlsch0_harq->Qm) {
886
  case 2 :
887
    if ((rx_type==rx_standard) || (codeword_TB1 == -1)) {
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890
        dlsch_qpsk_llr(frame_parms,
891
                       pdsch_vars[eNB_id]->rxdataF_comp0,
892
                       (int16_t*)pllr_symbol_cw0,
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                       symbol,
                       first_symbol_flag,
                       nb_rb,
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                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
897
                       beamforming_mode);
898 899 900 901 902

    } else if (codeword_TB0 == -1){

        dlsch_qpsk_llr(frame_parms,
                       pdsch_vars[eNB_id]->rxdataF_comp0,
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                       (int16_t*)pllr_symbol_cw1,
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                       symbol,
                       first_symbol_flag,
                       nb_rb,
907
                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
908
                       beamforming_mode);
909
    }
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      else if (rx_type >= rx_IC_single_stream) {
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        if (dlsch1_harq->Qm == 2) {
912
          dlsch_qpsk_qpsk_llr(frame_parms,
913
                              pdsch_vars[eNB_id]->rxdataF_comp0,
914
                              rxdataF_comp_ptr,
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                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
917
                              symbol,first_symbol_flag,nb_rb,
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918
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
919
                              pdsch_vars[eNB_id]->llr128);
920 921 922
          if (rx_type==rx_IC_dual_stream) {
            dlsch_qpsk_qpsk_llr(frame_parms,
                                rxdataF_comp_ptr,
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                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
926
                                symbol,first_symbol_flag,nb_rb,
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                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
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                                pdsch_vars[eNB_id]->llr128_2ndstream);
929 930
          }
        }
931
        else if (dlsch1_harq->Qm == 4) {
932
          dlsch_qpsk_16qam_llr(frame_parms,
933
                               pdsch_vars[eNB_id]->rxdataF_comp0,
934 935
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
936 937
                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                               pdsch_vars[eNB_id]->llr[0],
938
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
940
                               pdsch_vars[eNB_id]->llr128);
941 942 943
          if (rx_type==rx_IC_dual_stream) {
            dlsch_16qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
944
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
945
                                 dl_ch_mag_ptr,
946 947
                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                 pdsch_vars[eNB_id]->llr[1],
948
                                 symbol,first_symbol_flag,nb_rb,
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949
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
950
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
951 952 953 954
          }
        }
        else {
          dlsch_qpsk_64qam_llr(frame_parms,
955
                               pdsch_vars[eNB_id]->rxdataF_comp0,
956 957
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
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                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                               pdsch_vars[eNB_id]->llr[0],
960
                               symbol,first_symbol_flag,nb_rb,
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961
                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
962
                               pdsch_vars[eNB_id]->llr128);
963 964 965
          if (rx_type==rx_IC_dual_stream) {
            dlsch_64qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
966
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
967
                                 dl_ch_mag_ptr,
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                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                 pdsch_vars[eNB_id]->llr[1],
970
                                 symbol,first_symbol_flag,nb_rb,
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971
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
972
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
973
          }
974
        }
975
      }
976 977
    break;
  case 4 :
978
    if ((rx_type==rx_standard ) || (codeword_TB1 == -1)) {
979
      dlsch_16qam_llr(frame_parms,
980 981 982
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
983
                      symbol,first_symbol_flag,nb_rb,
984
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
985 986
                      pdsch_vars[eNB_id]->llr128,
                      beamforming_mode);
987 988 989 990 991 992 993 994 995
    } else if (codeword_TB0 == -1){
      dlsch_16qam_llr(frame_parms,
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[1],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      symbol,first_symbol_flag,nb_rb,
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
                      pdsch_vars[eNB_id]->llr128_2ndstream,
                      beamforming_mode);
996
    }
997
    else if (rx_type >= rx_IC_single_stream) {
998
      if (dlsch1_harq->Qm == 2) {
999
        dlsch_16qam_qpsk_llr(frame_parms,
1000
                             pdsch_vars[eNB_id]->rxdataF_comp0,
1001
                             rxdataF_comp_ptr,//i
1002 1003
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
1004
                             pdsch_vars[eNB_id]->llr[0],
1005
                             symbol,first_symbol_flag,nb_rb,
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1006
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
1007
                             pdsch_vars[eNB_id]->llr128);
1008 1009 1010
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_16qam_llr(frame_parms,
                               rxdataF_comp_ptr,
1011 1012 1013 1014
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,//i
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                               pdsch_vars[eNB_id]->llr[1],
1015
                               symbol,first_symbol_flag,nb_rb,
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1016
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
1017
                               pdsch_vars[eNB_id]->llr128_2ndstream);
1018
        }
1019
      }
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1020
      else if (dlsch1_harq->Qm == 4) {
1021
        dlsch_16qam_16qam_llr(frame_parms,
1022
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1023
                              rxdataF_comp_ptr,//i
1024
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1025
                              dl_ch_mag_ptr,//i
1026 1027
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1028 1029
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
1030
                              pdsch_vars[eNB_id]->llr128);
1031 1032 1033
        if (rx_type==rx_IC_dual_stream) {
          dlsch_16qam_16qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1034
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1035
                                dl_ch_mag_ptr,
1036 1037 1038
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1039 1040
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
1041
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1042
        }
1043 1044
      }
      else {
1045
        dlsch_16qam_64qam_llr(frame_parms,
1046
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1047
                              rxdataF_comp_ptr,//i
1048
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1049
                              dl_ch_mag_ptr,//i
1050 1051
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1052 1053
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
1054
                              pdsch_vars[eNB_id]->llr128);
1055 1056 1057
        if (rx_type==rx_IC_dual_stream) {
          dlsch_64qam_16qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1058
                                pdsch_vars[eNB_id]->rxdataF_comp0,
1059
                                dl_ch_mag_ptr,
1060 1061 1062
                                pdsch_vars[eNB_id]->dl_ch_mag0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1063 1064
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
1065
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1066
        }
1067 1068 1069 1070
      }
    }
    break;
  case 6 :
1071
    if ((rx_type==rx_standard) || (codeword_TB1 == -1))  {
1072
      dlsch_64qam_llr(frame_parms,
1073
                      pdsch_vars[eNB_id]->rxdataF_comp0,
1074
                      (int16_t*)pllr_symbol_cw0,
1075 1076
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
1077
                      symbol,first_symbol_flag,nb_rb,
1078
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1079
                      pdsch_vars[eNB_id]->llr_offset[symbol],
1080
                      beamforming_mode);
1081 1082 1083
    } else if (codeword_TB0 == -1){
      dlsch_64qam_llr(frame_parms,
                      pdsch_vars[eNB_id]->rxdataF_comp0,
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1084
                      (int16_t*)pllr_symbol_cw1,
1085 1086 1087 1088
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
                      symbol,first_symbol_flag,nb_rb,
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
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1089
                      pdsch_vars[eNB_id]->llr_offset[symbol],
1090
                      beamforming_mode);
1091
    }
1092
    else if (rx_type >= rx_IC_single_stream) {
1093
      if (dlsch1_harq->Qm == 2) {
1094
        dlsch_64qam_qpsk_llr(frame_parms,
1095
                             pdsch_vars[eNB_id]->rxdataF_comp0,
1096
                             rxdataF_comp_ptr,//i
1097 1098
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
1099
                             pdsch_vars[eNB_id]->llr[0],
1100
                             symbol,first_symbol_flag,nb_rb,
1101
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1102
                             pdsch_vars[eNB_id]->llr128);
1103 1104 1105
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_64qam_llr(frame_parms,
                               rxdataF_comp_ptr,
1106 1107 1108 1109
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                               pdsch_vars[eNB_id]->llr[1],
1110 1111
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
1112
                               pdsch_vars[eNB_id]->llr128_2ndstream);
1113
        }
1114
      }
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lukashov committed
1115
      else if (dlsch1_harq->Qm == 4) {
1116
        dlsch_64qam_16qam_llr(frame_parms,
1117
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1118
                              rxdataF_comp_ptr,//i
1119
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1120
                              dl_ch_mag_ptr,//i
1121 1122
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1123 1124
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1125
                              pdsch_vars[eNB_id]->llr128);
1126 1127 1128
        if (rx_type==rx_IC_dual_stream) {
          dlsch_16qam_64qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1129
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1130
                                dl_ch_mag_ptr,
1131 1132 1133
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1134 1135
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
1136
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1137
        }
1138
      }
1139
      else {
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        dlsch_64qam_64qam_llr(frame_parms,
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                              pdsch_vars[eNB_id]->rxdataF_comp0,
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                              rxdataF_comp_ptr,//i
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                              pdsch_vars[eNB_id]->dl_ch_mag0,
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                              dl_ch_mag_ptr,//i
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                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
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                              (int16_t*)pllr_symbol_cw0,
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                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
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                              pdsch_vars[eNB_id]->llr_offset[symbol]);
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        if (rx_type==rx_IC_dual_stream) {
          dlsch_64qam_64qam_llr(frame_parms,
                                rxdataF_comp_ptr,
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                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
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                                dl_ch_mag_ptr,
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                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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                                (int16_t*)pllr_symbol_cw1,
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                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
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                                pdsch_vars[eNB_id]->llr_offset[symbol]);
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        }
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      }
    }
    break;
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  default:
    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
    return(-1);
    break;
  }
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  if (dlsch1_harq) {
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  switch (get_Qm(dlsch1_harq->mcs)) {
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  case 2 :
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    if (rx_type==rx_standard) {
        dlsch_qpsk_llr(frame_parms,
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                       pdsch_vars[eNB_id]->rxdataF_comp0,
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                       (int16_t*)pllr_symbol_cw0,
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                       symbol,first_symbol_flag,nb_rb,
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                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
                       beamforming_mode);
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    }
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    break;
  case 4:
    if (rx_type==rx_standard) {
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      dlsch_16qam_llr(frame_parms,
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                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
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                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
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                      pdsch_vars[eNB_id]->llr128,
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                      beamforming_mode);
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    }
    break;
  case 6 :
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    if (rx_type==rx_standard) {
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      dlsch_64qam_llr(frame_parms,
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                      pdsch_vars[eNB_id]->rxdataF_comp0,
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                      (int16_t*)pllr_symbol_cw0,
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                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
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                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
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                      pdsch_vars[eNB_id]->llr_offset[symbol],
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                      beamforming_mode);
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  }
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    break;
  default:
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    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
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    return(-1);
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    break;
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  }
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  }

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#if UE_TIMING_TRACE
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    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
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#if DISABLE_LOG_X
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    printf("[AbsSFN %d.%d] Slot%d Symbol %d: LLR Computation %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#else
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    LOG_D(PHY, "[AbsSFN %d.%d] Slot%d Symbol %d: LLR Computation  %5.2f \n",frame,subframe,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[subframe]][slot].p_time/(cpuf*1000.0));
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#endif
#endif
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    // Please keep it: useful for debugging
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#if 0
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  if( (symbol == 13) && (subframe==0) && (dlsch0_harq->Qm == 6) /*&& (nb_rb==25)*/)
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  {
      LOG_E(PHY,"Dump Phy Chan Est \n");
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      if(1)
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      {
#if 1
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      LOG_M("rxdataF0.m"    , "rxdataF0",             &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF[0][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("rxdataF1.m"    , "rxdataF1",             &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].rxdataF[0][0],14*frame_parms->ofdm_symbol_size,1,1);
      LOG_M("dl_ch_estimates00.m", "dl_ch_estimates00",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][0][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("dl_ch_estimates01.m", "dl_ch_estimates01",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][1][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("dl_ch_estimates10.m", "dl_ch_estimates10",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][2][0],14*frame_parms->ofdm_symbol_size,1,1);
      //LOG_M("dl_ch_estimates11.m", "dl_ch_estimates11",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[subframe]].dl_ch_estimates[eNB_id][3][0],14*frame_parms->ofdm_symbol_size,1,1);


      //LOG_M("rxdataF_ext00.m"    , "rxdataF_ext00",       &pdsch_vars[eNB_id]->rxdataF_ext[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_ext01.m"    , "rxdataF_ext01",       &pdsch_vars[eNB_id]->rxdataF_ext[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_ext10.m"    , "rxdataF_ext10",       &pdsch_vars[eNB_id]->rxdataF_ext[2][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_ext11.m"    , "rxdataF_ext11",       &pdsch_vars[eNB_id]->rxdataF_ext[3][0],14*frame_parms->N_RB_DL*12,1,1);
      LOG_M("dl_ch_estimates_ext00.m", "dl_ch_estimates_ext00", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("dl_ch_estimates_ext01.m", "dl_ch_estimates_ext01", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("dl_ch_estimates_ext10.m", "dl_ch_estimates_ext10", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[2][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("dl_ch_estimates_ext11.m", "dl_ch_estimates_ext11", &pdsch_vars[eNB_id]->dl_ch_estimates_ext[3][0],14*frame_parms->N_RB_DL*12,1,1);
      LOG_M("rxdataF_comp00.m","rxdataF_comp00",              &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_comp01.m","rxdataF_comp01",              &pdsch_vars[eNB_id]->rxdataF_comp0[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_comp10.m","rxdataF_comp10",              &pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][0],14*frame_parms->N_RB_DL*12,1,1);
      //LOG_M("rxdataF_comp11.m","rxdataF_comp11",              &pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][0],14*frame_parms->N_RB_DL*12,1,1);
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#endif
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      LOG_M("llr0.m","llr0",  &pdsch_vars[eNB_id]->llr[0][0],(14*nb_rb*12*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm),1,0);
      //LOG_M("llr1.m","llr1",  &pdsch_vars[eNB_id]->llr[1][0],(14*nb_rb*12*dlsch1_harq->Qm) - 4*(nb_rb*4*dlsch1_harq->Qm),1,0);
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      AssertFatal(0," ");
      }

  }
#endif
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  T(T_UE_PHY_PDSCH_IQ, T_INT(eNB_id), T_INT(frame%1024),
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    T_INT(subframe), T_INT(nb_rb),
    T_INT(frame_parms->N_RB_UL), T_INT(frame_parms->symbols_per_tti),
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    T_BUFFER(&pdsch_vars[eNB_id]->rxdataF_comp0[eNB_id][0],
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             2 * /* ulsch[UE_id]->harq_processes[harq_pid]->nb_rb */ frame_parms->N_RB_UL *12*frame_parms->symbols_per_tti*2));
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  return 0;
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}

//==============================================================================================
// Pre-processing for LLR computation
//==============================================================================================

void dlsch_channel_compensation(int **rxdataF_ext,
                                int **dl_ch_estimates_ext,
                                int **dl_ch_mag,
                                int **dl_ch_magb,
                                int **rxdataF_comp,
                                int **rho,
                                LTE_DL_FRAME_PARMS *frame_parms,
                                unsigned char symbol,
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                                uint8_t first_symbol_flag,
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                                unsigned char mod_order,
                                unsigned short nb_rb,
                                unsigned char output_shift,
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                                PHY_MEASUREMENTS *measurements)
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{
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#if defined(__i386) || defined(__x86_64)
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  unsigned short rb;
  unsigned char aatx,aarx,symbol_mod,pilots=0;
  __m128i *dl_ch128,*dl_ch128_2,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128,*rho128;
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  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
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      nb_rb=1+(5*nb_rb/6);
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    else
      pilots=1;
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  }

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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    if (mod_order == 4) {
      QAM_amp128 = _mm_set1_epi16(QAM16_n1);  // 2/sqrt(10)
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      QAM_amp128b = _mm_setzero_si128();
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    } else if (mod_order == 6) {
      QAM_amp128  = _mm_set1_epi16(QAM64_n1); //
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      QAM_amp128b = _mm_set1_epi16(QAM64_n2);
    }
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
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      //print_shorts("dl_ch128[0]=",&dl_ch128[0]);*/
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      dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
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      rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
        if (mod_order>2) {
          // get channel amplitude if not QPSK

          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

          mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

          mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

          // store channel magnitude here in a new field of dlsch

          dl_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
          dl_ch_mag128b[0] = dl_ch_mag128[0];
          dl_ch_mag128[0] = _mm_mulhi_epi16(dl_ch_mag128[0],QAM_amp128);
          dl_ch_mag128[0] = _mm_slli_epi16(dl_ch_mag128[0],1);
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          //print_ints("Re(ch):",(int16_t*)&mmtmpD0);
          //print_shorts("QAM_amp:",(int16_t*)&QAM_amp128);
          //print_shorts("mag:",(int16_t*)&dl_ch_mag128[0]);
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          dl_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
          dl_ch_mag128b[1] = dl_ch_mag128[1];
          dl_ch_mag128[1] = _mm_mulhi_epi16(dl_ch_mag128[1],QAM_amp128);
          dl_ch_mag128[1] = _mm_slli_epi16(dl_ch_mag128[1],1);

          if (pilots==0) {
            mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128[2]);
            mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
            mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

            dl_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
            dl_ch_mag128b[2] = dl_ch_mag128[2];

            dl_ch_mag128[2] = _mm_mulhi_epi16(dl_ch_mag128[2],QAM_amp128);
            dl_ch_mag128[2] = _mm_slli_epi16(dl_ch_mag128[2],1);
          }

          dl_ch_mag128b[0] = _mm_mulhi_epi16(dl_ch_mag128b[0],QAM_amp128b);
          dl_ch_mag128b[0] = _mm_slli_epi16(dl_ch_mag128b[0],1);


          dl_ch_mag128b[1] = _mm_mulhi_epi16(dl_ch_mag128b[1],QAM_amp128b);
          dl_ch_mag128b[1] = _mm_slli_epi16(dl_ch_mag128b[1],1);

          if (pilots==0) {
            dl_ch_mag128b[2] = _mm_mulhi_epi16(dl_ch_mag128b[2],QAM_amp128b);
            dl_ch_mag128b[2] = _mm_slli_epi16(dl_ch_mag128b[2],1);
          }
        }

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],rxdataF128[0]);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        //  print_ints("im",&mmtmpD1);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //  print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //  print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //        print_ints("c0",&mmtmpD2);
        //  print_ints("c1",&mmtmpD3);
        rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128);
        //  print_shorts("ch:",dl_ch128);
        //  print_shorts("pack:",rxdataF_comp128);

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[1],rxdataF128[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128+1);
        //  print_shorts("ch:",dl_ch128+1);
        //  print_shorts("pack:",rxdataF_comp128+1);

        if (pilots==0) {
          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[2],rxdataF128[2]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128+2);
          //  print_shorts("ch:",dl_ch128+2);
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               // print_shorts("pack:",rxdataF_comp128+2);
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          dl_ch128+=3;
          dl_ch_mag128+=3;
          dl_ch_mag128b+=3;
          rxdataF128+=3;
          rxdataF_comp128+=3;
        } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
          dl_ch128+=2;
          dl_ch_mag128+=2;
          dl_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }

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      }
    }
  }
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1453
  if (rho) {
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      rho128        = (__m128i *)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128      = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128_2[0]);
        //  print_ints("re",&mmtmpD0);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        //  print_ints("im",&mmtmpD1);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[0]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //  print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //  print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //        print_ints("c0",&mmtmpD2);
        //  print_ints("c1",&mmtmpD3);
        rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);

        //print_shorts("rx:",dl_ch128_2);
        //print_shorts("ch:",dl_ch128);
        //print_shorts("pack:",rho128);

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128_2[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);


        rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
        //print_shorts("rx:",dl_ch128_2+1);
        //print_shorts("ch:",dl_ch128+1);
        //print_shorts("pack:",rho128+1);
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128_2[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //print_shorts("rx:",dl_ch128_2+2);
        //print_shorts("ch:",dl_ch128+2);
        //print_shorts("pack:",rho128+2);

        dl_ch128+=3;
        dl_ch128_2+=3;
        rho128+=3;

      }

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      if (first_symbol_flag==1) {
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        measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
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      }
    }
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  }

  _mm_empty();
  _m_empty();
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#elif defined(__arm__)


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  unsigned short rb;
  unsigned char aatx,aarx,symbol_mod,pilots=0;
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  int16x4_t *dl_ch128,*dl_ch128_2,*rxdataF128;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4;
  int16x8_t QAM_amp128,QAM_amp128b;
  int16x4x2_t *rxdataF_comp128,*rho128;
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  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->nb_antenna_ports_eNB==1) { // 10 out of 12 so don't reduce size
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      nb_rb=1+(5*nb_rb/6);
    }
    else {
      pilots=1;
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    }
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  }
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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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    if (mod_order == 4) {
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      QAM_amp128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = vmovq_n_s16(0);
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    } else if (mod_order == 6) {
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      QAM_amp128  = vmovq_n_s16(QAM64_n1); //
      QAM_amp128b = vmovq_n_s16(QAM64_n2);
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    }
    //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);

    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      dl_ch128          = (int16x4_t*)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (int16x8_t*)&dl_ch_mag[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (int16x8_t*)&dl_ch_magb[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
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      rxdataF128        = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128   = (int16x4x2_t*)&rxdataF_comp[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
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  if (mod_order>2) {
    // get channel amplitude if not QPSK
    mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128[0]);
    // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
    mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128[1]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
    mmtmpD0 = vmull_s16(dl_ch128[2], dl_ch128[2]);
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    mmtmpD1 = vmull_s16(dl_ch128[3], dl_ch128[3]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    if (pilots==0) {
      mmtmpD0 = vmull_s16(dl_ch128[4], dl_ch128[4]);
      mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
      mmtmpD1 = vmull_s16(dl_ch128[5], dl_ch128[5]);
      mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
      mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    }
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    dl_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b);
    dl_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b);
    dl_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
    dl_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);

    if (pilots==0) {
      dl_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
      dl_ch_mag128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp128);
    }
  }

  mmtmpD0 = vmull_s16(dl_ch128[0], rxdataF128[0]);
  //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
  mmtmpD1 = vmull_s16(dl_ch128[1], rxdataF128[1]);
  //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[0],*(int16x4_t*)conj)), rxdataF128[0]);
  //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[1],*(int16x4_t*)conj)), rxdataF128[1]);
  //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
  //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rxdataF_comp128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
  mmtmpD0 = vmull_s16(dl_ch128[2], rxdataF128[2]);
  mmtmpD1 = vmull_s16(dl_ch128[3], rxdataF128[3]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[2],*(int16x4_t*)conj)), rxdataF128[2]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[3],*(int16x4_t*)conj)), rxdataF128[3]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rxdataF_comp128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

  if (pilots==0) {
    mmtmpD0 = vmull_s16(dl_ch128[4], rxdataF128[4]);
    mmtmpD1 = vmull_s16(dl_ch128[5], rxdataF128[5]);
    mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
         vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

    mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[4],*(int16x4_t*)conj)), rxdataF128[4]);
    mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[5],*(int16x4_t*)conj)), rxdataF128[5]);
    mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
         vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


    mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
    mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
    rxdataF_comp128[2] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


    dl_ch128+=6;
    dl_ch_mag128+=3;
    dl_ch_mag128b+=3;
    rxdataF128+=6;
    rxdataF_comp128+=3;

  } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
    dl_ch128+=4;
    dl_ch_mag128+=2;
    dl_ch_mag128b+=2;
    rxdataF128+=4;
    rxdataF_comp128+=2;
  }
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      }
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    }
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  }
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  if (rho) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      rho128        = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
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      dl_ch128      = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
      for (rb=0; rb<nb_rb; rb++) {
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  mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128_2[0]);
  mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[0],*(int16x4_t*)conj)), dl_ch128_2[0]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[1],*(int16x4_t*)conj)), dl_ch128_2[1]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rho128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

  mmtmpD0 = vmull_s16(dl_ch128[2], dl_ch128_2[2]);
  mmtmpD1 = vmull_s16(dl_ch128[3], dl_ch128_2[3]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[2],*(int16x4_t*)conj)), dl_ch128_2[2]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[3],*(int16x4_t*)conj)), dl_ch128_2[3]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rho128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

  mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128_2[0]);
  mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[4],*(int16x4_t*)conj)), dl_ch128_2[4]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[5],*(int16x4_t*)conj)), dl_ch128_2[5]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rho128[2] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


  dl_ch128+=6;
  dl_ch128_2+=6;
  rho128+=3;
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      }
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      if (first_symbol_flag==1) {
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  measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
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      }
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    }
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  }
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#endif
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}

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void dlsch_channel_compensation_core(int **rxdataF_ext,
                                     int **dl_ch_estimates_ext,
                                     int **dl_ch_mag,
                                     int **dl_ch_magb,
                                     int **rxdataF_comp,
                                     int **rho,
                                     unsigned char n_tx,
                                     unsigned char n_rx,
                                     unsigned char mod_order,
                                     unsigned char output_shift,
                                     int length,
                                     int start_point)

{

  unsigned short ii;
  int length_mod8 = 0;
  int length2;
  __m128i *dl_ch128,*dl_ch_mag128,*dl_ch_mag128b, *dl_ch128_2, *rxdataF128,*rxdataF_comp128,*rho128;
  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
  int aatx = 0, aarx = 0;

  for (aatx=0; aatx<n_tx; aatx++) {

    if (mod_order == 4) {
      QAM_amp128 = _mm_set1_epi16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = _mm_setzero_si128();
    } else if (mod_order == 6) {
      QAM_amp128  = _mm_set1_epi16(QAM64_n1); //
      QAM_amp128b = _mm_set1_epi16(QAM64_n2);
    }

    for (aarx=0; aarx<n_rx; aarx++) {

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    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];
    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*n_rx + aarx][start_point];
    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*n_rx + aarx][start_point];
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    rxdataF128        = (__m128i *)&rxdataF_ext[aarx][start_point];
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    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*n_rx + aarx][start_point];
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      length_mod8 = length&7;
      if (length_mod8 == 0){
        length2 = length>>3;

        for (ii=0; ii<length2; ++ii) {
          if (mod_order>2) {
            // get channel amplitude if not QPSK

            mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
            mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

            mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
            mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

            mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

            // store channel magnitude here in a new field of dlsch

            dl_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
            dl_ch_mag128b[0] = dl_ch_mag128[0];
            dl_ch_mag128[0] = _mm_mulhi_epi16(dl_ch_mag128[0],QAM_amp128);
            dl_ch_mag128[0] = _mm_slli_epi16(dl_ch_mag128[0],1);
            //print_ints("Re(ch):",(int16_t*)&mmtmpD0);
            //print_shorts("QAM_amp:",(int16_t*)&QAM_amp128);
            //print_shorts("mag:",(int16_t*)&dl_ch_mag128[0]);
            dl_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
            dl_ch_mag128b[1] = dl_ch_mag128[1];
            dl_ch_mag128[1] = _mm_mulhi_epi16(dl_ch_mag128[1],QAM_amp128);
            dl_ch_mag128[1] = _mm_slli_epi16(dl_ch_mag128[1],1);

            dl_ch_mag128b[0] = _mm_mulhi_epi16(dl_ch_mag128b[0],QAM_amp128b);
            dl_ch_mag128b[0] = _mm_slli_epi16(dl_ch_mag128b[0],1);

            dl_ch_mag128b[1] = _mm_mulhi_epi16(dl_ch_mag128b[1],QAM_amp128b);
            dl_ch_mag128b[1] = _mm_slli_epi16(dl_ch_mag128b[1],1);

          }

          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],rxdataF128[0]);

          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
          //  print_ints("im",&mmtmpD1);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          //  print_ints("re(shift)",&mmtmpD0);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          //  print_ints("im(shift)",&mmtmpD1);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
          //        print_ints("c0",&mmtmpD2);
          //  print_ints("c1",&mmtmpD3);
          rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128);
          //  print_shorts("ch:",dl_ch128);
          //  print_shorts("pack:",rxdataF_comp128);

          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[1],rxdataF128[1]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128+1);
          //  print_shorts("ch:",dl_ch128+1);
          //print_shorts("pack:",rxdataF_comp128+1);

          dl_ch128+=2;
          dl_ch_mag128+=2;
          dl_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }
      }else {
        printf ("Channel Compensation: Received number of subcarriers is not multiple of 8, \n"
                 "need to adapt the code!\n");
      }
    }
  }

/*This part of code makes sense only for processing in 2x2 blocks*/
  if (rho) {


    for (aarx=0; aarx<n_rx; aarx++) {
      rho128        = (__m128i *)&rho[aarx][start_point];
      dl_ch128      = (__m128i *)&dl_ch_estimates_ext[aarx][start_point];
      dl_ch128_2    = (__m128i *)&dl_ch_estimates_ext[2+aarx][start_point];

      if (length_mod8 == 0){
        length2 = length>>3;

        for (ii=0; ii<length2; ++ii) {
          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128_2[0]);
          //  print_ints("re",&mmtmpD0);

          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
          //  print_ints("im",&mmtmpD1);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[0]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          //  print_ints("re(shift)",&mmtmpD0);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          //  print_ints("im(shift)",&mmtmpD1);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
          //        print_ints("c0",&mmtmpD2);
          //  print_ints("c1",&mmtmpD3);
          rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);

          //print_shorts("rx:",dl_ch128_2);
          //print_shorts("ch:",dl_ch128);
          //print_shorts("pack:",rho128);

          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128_2[1]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128_2[1]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
          dl_ch128+=2;
          dl_ch128_2+=2;
          rho128+=2;
        }
      }else {
        printf ("Channel Compensation: Received number of subcarriers is not multiple of 8, \n"
                 "need to adapt the code!\n");
      }
    }
  }
  _mm_empty();
  _m_empty();
}

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#if defined(__x86_64__) || defined(__i386__)

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void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1)
{
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  __m128i amp;
  amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);

  switch (pmi) {
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  case 0 :   // +1 +1
    //    print_shorts("phase 0 :ch0",ch0);
    //    print_shorts("phase 0 :ch1",ch1);
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    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
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    break;
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  case 1 :   // +1 -1
    //    print_shorts("phase 1 :ch0",ch0);
    //    print_shorts("phase 1 :ch1",ch1);
    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
    //    print_shorts("phase 1 :ch0-ch1",ch0);
    break;
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  case 2 :   // +1 +j
    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
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    break;   // +1 -j
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  case 3 :
    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
    break;
  }

  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);
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  _mm_empty();
  _m_empty();
}
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#elif defined(__arm__)
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void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1) {
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  // sqrt(2) is already taken into account in computation sqrt_rho_a, sqrt_rho_b,
  //so removed it
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  //__m128i amp;
  //amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
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  switch (pmi) {
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  case 0 :   // +1 +1
    //    print_shorts("phase 0 :ch0",ch0);
    //    print_shorts("phase 0 :ch1",ch1);
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    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
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    break;
  case 1 :   // +1 -1
    //    print_shorts("phase 1 :ch0",ch0);
    //    print_shorts("phase 1 :ch1",ch1);
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    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
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    //    print_shorts("phase 1 :ch0-ch1",ch0);
    break;
  case 2 :   // +1 +j
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    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_subs_epi16(ch0[0],ch1[0]);
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    break;   // +1 -j
  case 3 :
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    ch1[0] = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    ch1[0] = _mm_shufflelo_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch1[0] = _mm_shufflehi_epi16(ch1[0],_MM_SHUFFLE(2,3,0,1));
    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
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    break;
  }
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  //ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  //ch0[0] = _mm_slli_epi16(ch0[0],1);
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  _mm_empty();
  _m_empty();
}
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#endif
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// precoding is stream 0 .5(1,1)  .5(1,-1) .5(1,1)  .5(1,-1)
//              stream 1 .5(1,-1) .5(1,1)  .5(1,-1) .5(1,1)
// store "precoded" channel for stream 0 in ch0, stream 1 in ch1

short TM3_prec[8]__attribute__((aligned(16))) = {1,1,-1,-1,1,1,-1,-1} ;

void prec2A_TM3_128(__m128i *ch0,__m128i *ch1) {
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  __m128i amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
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  __m128i tmp0,tmp1;
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  //_mm_mulhi_epi16
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  //  print_shorts("prec2A_TM3 ch0 (before):",ch0);
  //  print_shorts("prec2A_TM3 ch1 (before):",ch1);

  tmp0 = ch0[0];
  tmp1  = _mm_sign_epi16(ch1[0],((__m128i*)&TM3_prec)[0]);
  //  print_shorts("prec2A_TM3 ch1*s (mid):",(__m128i*)TM3_prec);

  ch0[0] = _mm_adds_epi16(ch0[0],tmp1);
  ch1[0] = _mm_subs_epi16(tmp0,tmp1);

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  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);

  ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
  ch1[0] = _mm_slli_epi16(ch1[0],1);
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  //  print_shorts("prec2A_TM3 ch0 (mid):",&tmp0);
  //  print_shorts("prec2A_TM3 ch1 (mid):",ch1);

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  //ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  //ch0[0] = _mm_slli_epi16(ch0[0],1);
  //ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
  //ch1[0] = _mm_slli_epi16(ch1[0],1);
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  //ch0[0] = _mm_srai_epi16(ch0[0],1);
  //ch1[0] = _mm_srai_epi16(ch1[0],1);
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  //  print_shorts("prec2A_TM3 ch0 (after):",ch0);
  //  print_shorts("prec2A_TM3 ch1 (after):",ch1);
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  _mm_empty();
  _m_empty();
}

// pmi = 0 => stream 0 (1,1), stream 1 (1,-1)
// pmi = 1 => stream 0 (1,j), stream 2 (1,-j)

void prec2A_TM4_128(int pmi,__m128i *ch0,__m128i *ch1) {
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// sqrt(2) is already taken into account in computation sqrt_rho_a, sqrt_rho_b,
//so divide by 2 is replaced by divide by sqrt(2).
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 // printf ("demod pmi=%d\n", pmi);
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 __m128i amp;
 amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
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  __m128i tmp0,tmp1;
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 // print_shorts("prec2A_TM4 ch0 (before):",ch0);
 // print_shorts("prec2A_TM4 ch1 (before):",ch1);
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  if (pmi == 0) { //[1 1;1 -1]
    tmp0 = ch0[0];
    tmp1 = ch1[0];
    ch0[0] = _mm_adds_epi16(tmp0,tmp1);
    ch1[0] = _mm_subs_epi16(tmp0,tmp1);
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  }
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  else { //ch0+j*ch1 ch0-j*ch1
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    tmp0 = ch0[0];
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    tmp1   = _mm_sign_epi16(ch1[0],*(__m128i*)&conjugate[0]);
    tmp1   = _mm_shufflelo_epi16(tmp1,_MM_SHUFFLE(2,3,0,1));
    tmp1   = _mm_shufflehi_epi16(tmp1,_MM_SHUFFLE(2,3,0,1));
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    ch0[0] = _mm_subs_epi16(tmp0,tmp1);
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    ch1[0] = _mm_add_epi16(tmp0,tmp1);
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  }
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  //print_shorts("prec2A_TM4 ch0 (middle):",ch0);
  //print_shorts("prec2A_TM4 ch1 (middle):",ch1);

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  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);
  ch1[0] = _mm_mulhi_epi16(ch1[0],amp);
  ch1[0] = _mm_slli_epi16(ch1[0],1);

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 // ch0[0] = _mm_srai_epi16(ch0[0],1); //divide by 2
 // ch1[0] = _mm_srai_epi16(ch1[0],1); //divide by 2
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  //print_shorts("prec2A_TM4 ch0 (end):",ch0);
  //print_shorts("prec2A_TM4 ch1 (end):",ch1);
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  _mm_empty();
  _m_empty();
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 // print_shorts("prec2A_TM4 ch0 (end):",ch0);
  //print_shorts("prec2A_TM4 ch1 (end):",ch1);
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}

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void dlsch_channel_compensation_TM56(int **rxdataF_ext,
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                                     int **dl_ch_estimates_ext,
                                     int **dl_ch_mag,
                                     int **dl_ch_magb,
                                     int **rxdataF_comp,
                                     unsigned char *pmi_ext,
                                     LTE_DL_FRAME_PARMS *frame_parms,
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                                     PHY_MEASUREMENTS *measurements,
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                                     int eNB_id,
                                     unsigned char symbol,
                                     unsigned char mod_order,
                                     unsigned short nb_rb,
                                     unsigned char output_shift,
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                                     unsigned char dl_power_off)
{

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#if defined(__x86_64__) || defined(__i386__)

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  unsigned short rb,Nre;
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  __m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128;
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  unsigned char aarx=0,symbol_mod,pilots=0;
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  int precoded_signal_strength=0;
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  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

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  //printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);

  if (mod_order == 4) {
    QAM_amp128 = _mm_set1_epi16(QAM16_n1);
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    QAM_amp128b = _mm_setzero_si128();
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  } else if (mod_order == 6) {
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    QAM_amp128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp128b = _mm_set1_epi16(QAM64_n2);
  }
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

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    dl_ch0_128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
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    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];

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    for (rb=0; rb<nb_rb; rb++) {
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      // combine TX channels using precoder from pmi
#ifdef DEBUG_DLSCH_DEMOD
      printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
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#endif
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      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
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      if (pilots==0) {
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        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
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      }

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      if (mod_order>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

        dl_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag128b[0] = dl_ch_mag128[0];
        dl_ch_mag128[0] = _mm_mulhi_epi16(dl_ch_mag128[0],QAM_amp128);
        dl_ch_mag128[0] = _mm_slli_epi16(dl_ch_mag128[0],1);

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2206
        //print_shorts("dl_ch_mag128[0]=",&dl_ch_mag128[0]);
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        //print_shorts("dl_ch_mag128[0]=",&dl_ch_mag128[0]);

        dl_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag128b[1] = dl_ch_mag128[1];
        dl_ch_mag128[1] = _mm_mulhi_epi16(dl_ch_mag128[1],QAM_amp128);
        dl_ch_mag128[1] = _mm_slli_epi16(dl_ch_mag128[1],1);

        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

          dl_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag128b[2] = dl_ch_mag128[2];

          dl_ch_mag128[2] = _mm_mulhi_epi16(dl_ch_mag128[2],QAM_amp128);
          dl_ch_mag128[2] = _mm_slli_epi16(dl_ch_mag128[2],1);
        }

        dl_ch_mag128b[0] = _mm_mulhi_epi16(dl_ch_mag128b[0],QAM_amp128b);
        dl_ch_mag128b[0] = _mm_slli_epi16(dl_ch_mag128b[0],1);

        //print_shorts("dl_ch_mag128b[0]=",&dl_ch_mag128b[0]);

        dl_ch_mag128b[1] = _mm_mulhi_epi16(dl_ch_mag128b[1],QAM_amp128b);
        dl_ch_mag128b[1] = _mm_slli_epi16(dl_ch_mag128b[1],1);

        if (pilots==0) {
          dl_ch_mag128b[2] = _mm_mulhi_epi16(dl_ch_mag128b[2],QAM_amp128b);
          dl_ch_mag128b[2] = _mm_slli_epi16(dl_ch_mag128b[2],1);
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        }
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      }

      // MF multiply by conjugated channel
2244
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
2245
      //        print_ints("re",&mmtmpD0);
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      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
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      //        print_ints("im",&mmtmpD1);
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      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
2256
      //        print_ints("re(shift)",&mmtmpD0);
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      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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      //        print_ints("im(shift)",&mmtmpD1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      //        print_ints("c0",&mmtmpD2);
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      //        print_ints("c1",&mmtmpD3);
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      rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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      //        print_shorts("rx:",rxdataF128);
      //        print_shorts("ch:",dl_ch128);
      //        print_shorts("pack:",rxdataF_comp128);
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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      //  print_shorts("rx:",rxdataF128+1);
      //  print_shorts("ch:",dl_ch128+1);
      //  print_shorts("pack:",rxdataF_comp128+1);

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      if (pilots==0) {
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        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128+2);
        //  print_shorts("ch:",dl_ch128+2);
        //        print_shorts("pack:",rxdataF_comp128+2);

        dl_ch0_128+=3;
        dl_ch1_128+=3;
        dl_ch_mag128+=3;
        dl_ch_mag128b+=3;
        rxdataF128+=3;
        rxdataF_comp128+=3;
      } else {
        dl_ch0_128+=2;
        dl_ch1_128+=2;
        dl_ch_mag128+=2;
        dl_ch_mag128b+=2;
        rxdataF128+=2;
        rxdataF_comp128+=2;
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      }
    }
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    Nre = (pilots==0) ? 12 : 8;
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    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
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                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
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  } // rx_antennas
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  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
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  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
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  //   measurements->precoded_cqi_dB[eNB_id][0]);
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#elif defined(__arm__)

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  uint32_t rb,Nre;
  uint32_t aarx,symbol_mod,pilots=0;
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  int16x4_t *dl_ch0_128,*dl_ch1_128,*rxdataF128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp128;
  int16x8_t QAM_amp128,QAM_amp128b;
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  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
  int32_t precoded_signal_strength=0;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
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      { nb_rb=1+(5*nb_rb/6); }
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    else
      { pilots=1; }
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  }
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2357
  if (mod_order == 4) {
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    QAM_amp128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp128b = vmovq_n_s16(0);
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  } else if (mod_order == 6) {
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    QAM_amp128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp128b = vmovq_n_s16(QAM64_n2);
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  }
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  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    dl_ch0_128          = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch0_128b         = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128b         = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128        = (int16x8_t*)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128b       = (int16x8_t*)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF128          = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128     = (int16x8_t*)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];
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2381
    for (rb=0; rb<nb_rb; rb++) {
2382
#ifdef DEBUG_DLSCH_DEMOD
2383
      printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
2384
#endif
2385 2386
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[0],&dl_ch1_128b[0]);
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[1],&dl_ch1_128b[1]);
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      if (pilots==0) {
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        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[2],&dl_ch1_128b[2]);
2390
      }
2391

2392
      if (mod_order>2) {
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        // get channel amplitude if not QPSK
        mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[0]);
        // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
        mmtmpD1 = vmull_s16(dl_ch0_128[1], dl_ch0_128[1]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
        mmtmpD0 = vmull_s16(dl_ch0_128[2], dl_ch0_128[2]);
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[3]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        if (pilots==0) {
          mmtmpD0 = vmull_s16(dl_ch0_128[4], dl_ch0_128[4]);
          mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
          mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[5]);
          mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
          mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


        }

        dl_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b);
        dl_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b);
        dl_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
        dl_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);


        if (pilots==0) {
          dl_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
          dl_ch_mag128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp128);
        }
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      }
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      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
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      //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
2430
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
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      //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
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      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
2433
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2434 2435
      //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

2436
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
2437
      //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
2438
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
2439
      //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
2440
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
2441
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2442
      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
2443

2444 2445 2446
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
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2448 2449 2450
      mmtmpD0 = vmull_s16(dl_ch0_128[2], rxdataF128[2]);
      mmtmpD1 = vmull_s16(dl_ch0_128[3], rxdataF128[3]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
2451
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
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2453 2454 2455
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[3],*(int16x4_t*)conj)), rxdataF128[3]);
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
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                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
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2458 2459 2460
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2461

2462
      if (pilots==0) {
2463 2464 2465 2466
        mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
        mmtmpD1 = vmull_s16(dl_ch0_128[5], rxdataF128[5]);
        mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
                               vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
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2468 2469 2470 2471
        mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
        mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
        mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
                               vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2472 2473


2474 2475 2476
        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2477 2478


2479 2480 2481 2482 2483 2484
        dl_ch0_128+=6;
        dl_ch1_128+=6;
        dl_ch_mag128+=3;
        dl_ch_mag128b+=3;
        rxdataF128+=6;
        rxdataF_comp128+=3;
2485

2486
      } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
2487 2488 2489 2490 2491 2492
        dl_ch0_128+=4;
        dl_ch1_128+=4;
        dl_ch_mag128+=2;
        dl_ch_mag128b+=2;
        rxdataF128+=4;
        rxdataF_comp128+=2;
2493 2494
      }
    }
2495

2496
    Nre = (pilots==0) ? 12 : 8;
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2497

2498

2499
    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2500 2501

                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
2502 2503
    // rx_antennas
  }
2504
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
2505

2506
  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2507
  //     measurements->precoded_cqi_dB[eNB_id][0]);
2508

2509
#endif
2510
  _mm_empty();
2511
  _m_empty();
2512
}
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void precode_channel_est(int32_t **dl_ch_estimates_ext,
                        LTE_DL_FRAME_PARMS *frame_parms,
                        LTE_UE_PDSCH *pdsch_vars,
                        unsigned char symbol,
                        unsigned short nb_rb,
                        MIMO_mode_t mimo_mode){

  unsigned short rb;
  __m128i *dl_ch0_128,*dl_ch1_128;
  unsigned char aarx=0,symbol_mod,pilots=0;
  unsigned char *pmi_ext = pdsch_vars->pmi_ext;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

  for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) {

    dl_ch0_128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12]; // this is h11
    dl_ch1_128          = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12]; // this is h12

    for (rb=0; rb<nb_rb; rb++) {
      if (mimo_mode==LARGE_CDD) {
            prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
            prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
            if (pilots==0) {
              prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
            }
          }else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
            prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
            prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);
            if (pilots==0) {
              prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
            }
          }else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
            prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
            prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
            if (pilots==0) {
              prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
            }
          }else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING) {
            prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
            prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
            if (pilots==0) {
              prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
            }
          }else {
            LOG_E(PHY,"Unknown MIMO mode\n");
            return;
          }
          if (pilots==0){
            dl_ch0_128+=3;
            dl_ch1_128+=3;
          }else {
            dl_ch0_128+=2;
            dl_ch1_128+=2;
          }
        }

      }
}

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void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
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                                    LTE_UE_PDSCH *pdsch_vars,
                                    PHY_MEASUREMENTS *measurements,
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                                    int eNB_id,
                                    unsigned char symbol,
                                    unsigned char mod_order0,
                                    unsigned char mod_order1,
2584
                                    int harq_pid,
2585
                                    int round,
2586
                                    MIMO_mode_t mimo_mode,
2587
                                    unsigned short nb_rb,
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                                    unsigned short mmse_flag,
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                                    unsigned char output_shift0,
2590
                                    unsigned char output_shift1) {
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#if defined(__x86_64__) || defined(__i386__)

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  unsigned short rb,Nre;
  __m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag0_128,*dl_ch_mag1_128,*dl_ch_mag0_128b,*dl_ch_mag1_128b,*rxdataF128,*rxdataF_comp0_128,*rxdataF_comp1_128;
  unsigned char aarx=0,symbol_mod,pilots=0;
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  int precoded_signal_strength0=0,precoded_signal_strength1=0;
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  int rx_power_correction;
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  int **rxdataF_ext           = pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = pdsch_vars->dl_ch_estimates_ext;
  int **dl_ch_mag0            = pdsch_vars->dl_ch_mag0;
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  int **dl_ch_mag1            = pdsch_vars->dl_ch_mag1[harq_pid][round];
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  int **dl_ch_magb0           = pdsch_vars->dl_ch_magb0;
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  int **dl_ch_magb1           = pdsch_vars->dl_ch_magb1[harq_pid][round];
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  int **rxdataF_comp0         = pdsch_vars->rxdataF_comp0;
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  int **rxdataF_comp1         = pdsch_vars->rxdataF_comp1[harq_pid][round];
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  unsigned char *pmi_ext      = pdsch_vars->pmi_ext;
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  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp0_128,QAM_amp0_128b,QAM_amp1_128,QAM_amp1_128b;

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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

  rx_power_correction = 1;
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 // printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);
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  if (mod_order0 == 4) {
    QAM_amp0_128  = _mm_set1_epi16(QAM16_n1);
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    QAM_amp0_128b = _mm_setzero_si128();
2623
  } else if (mod_order0 == 6) {
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    QAM_amp0_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp0_128b = _mm_set1_epi16(QAM64_n2);
  }
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  if (mod_order1 == 4) {
    QAM_amp1_128  = _mm_set1_epi16(QAM16_n1);
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    QAM_amp1_128b = _mm_setzero_si128();
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  } else if (mod_order1 == 6) {
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    QAM_amp1_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp1_128b = _mm_set1_epi16(QAM64_n2);
  }
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  for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) {
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    dl_ch0_128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12]; // this is h11
    dl_ch1_128          = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12]; // this is h12
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    dl_ch_mag0_128      = (__m128i *)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12]; //responsible for x1
    dl_ch_mag0_128b     = (__m128i *)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];//responsible for x1
    dl_ch_mag1_128      = (__m128i *)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];   //responsible for x2. always coming from tx2
    dl_ch_mag1_128b     = (__m128i *)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];  //responsible for x2. always coming from tx2
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    rxdataF128          = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12]; //received signal on antenna of interest h11*x1+h12*x2
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    rxdataF_comp0_128   = (__m128i *)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12]; //result of multipl with MF x1 on antenna of interest
    rxdataF_comp1_128   = (__m128i *)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12]; //result of multipl with MF x2 on antenna of interest
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    for (rb=0; rb<nb_rb; rb++) {
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      if (mmse_flag == 0) {
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      // combine TX channels using precoder from pmi
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        if (mimo_mode==LARGE_CDD) {
          prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
          prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
          prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING) {
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else {
          LOG_E(PHY,"Unknown MIMO mode\n");
          return;
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        }
      }
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      if (mod_order0>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
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        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
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        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
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        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
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        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

        dl_ch_mag0_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag0_128b[0] = dl_ch_mag0_128[0];
        dl_ch_mag0_128[0] = _mm_mulhi_epi16(dl_ch_mag0_128[0],QAM_amp0_128);
        dl_ch_mag0_128[0] = _mm_slli_epi16(dl_ch_mag0_128[0],1);

        //  print_shorts("dl_ch_mag0_128[0]=",&dl_ch_mag0_128[0]);


        dl_ch_mag0_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag0_128b[1] = dl_ch_mag0_128[1];
        dl_ch_mag0_128[1] = _mm_mulhi_epi16(dl_ch_mag0_128[1],QAM_amp0_128);
        dl_ch_mag0_128[1] = _mm_slli_epi16(dl_ch_mag0_128[1],1);

        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
2708
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
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          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

          dl_ch_mag0_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag0_128b[2] = dl_ch_mag0_128[2];

          dl_ch_mag0_128[2] = _mm_mulhi_epi16(dl_ch_mag0_128[2],QAM_amp0_128);
          dl_ch_mag0_128[2] = _mm_slli_epi16(dl_ch_mag0_128[2],1);
        }

        dl_ch_mag0_128b[0] = _mm_mulhi_epi16(dl_ch_mag0_128b[0],QAM_amp0_128b);
        dl_ch_mag0_128b[0] = _mm_slli_epi16(dl_ch_mag0_128b[0],1);

2722
       // print_shorts("dl_ch_mag0_128b[0]=",&dl_ch_mag0_128b[0]);
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        dl_ch_mag0_128b[1] = _mm_mulhi_epi16(dl_ch_mag0_128b[1],QAM_amp0_128b);
        dl_ch_mag0_128b[1] = _mm_slli_epi16(dl_ch_mag0_128b[1],1);

        if (pilots==0) {
          dl_ch_mag0_128b[2] = _mm_mulhi_epi16(dl_ch_mag0_128b[2],QAM_amp0_128b);
          dl_ch_mag0_128b[2] = _mm_slli_epi16(dl_ch_mag0_128b[2],1);
        }
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      }

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      if (mod_order1>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],dl_ch1_128[0]);
2737
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
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        mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
2740
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
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        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

        dl_ch_mag1_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag1_128b[0] = dl_ch_mag1_128[0];
        dl_ch_mag1_128[0] = _mm_mulhi_epi16(dl_ch_mag1_128[0],QAM_amp1_128);
        dl_ch_mag1_128[0] = _mm_slli_epi16(dl_ch_mag1_128[0],1);

2749
       // print_shorts("dl_ch_mag1_128[0]=",&dl_ch_mag1_128[0]);
2750 2751 2752 2753 2754 2755 2756 2757

        dl_ch_mag1_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag1_128b[1] = dl_ch_mag1_128[1];
        dl_ch_mag1_128[1] = _mm_mulhi_epi16(dl_ch_mag1_128[1],QAM_amp1_128);
        dl_ch_mag1_128[1] = _mm_slli_epi16(dl_ch_mag1_128[1],1);

        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],dl_ch1_128[2]);
2758
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
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          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

          dl_ch_mag1_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag1_128b[2] = dl_ch_mag1_128[2];

          dl_ch_mag1_128[2] = _mm_mulhi_epi16(dl_ch_mag1_128[2],QAM_amp1_128);
          dl_ch_mag1_128[2] = _mm_slli_epi16(dl_ch_mag1_128[2],1);
        }

        dl_ch_mag1_128b[0] = _mm_mulhi_epi16(dl_ch_mag1_128b[0],QAM_amp1_128b);
        dl_ch_mag1_128b[0] = _mm_slli_epi16(dl_ch_mag1_128b[0],1);

2772
       // print_shorts("dl_ch_mag1_128b[0]=",&dl_ch_mag1_128b[0]);
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        dl_ch_mag1_128b[1] = _mm_mulhi_epi16(dl_ch_mag1_128b[1],QAM_amp1_128b);
        dl_ch_mag1_128b[1] = _mm_slli_epi16(dl_ch_mag1_128b[1],1);

        if (pilots==0) {
          dl_ch_mag1_128b[2] = _mm_mulhi_epi16(dl_ch_mag1_128b[2],QAM_amp1_128b);
          dl_ch_mag1_128b[2] = _mm_slli_epi16(dl_ch_mag1_128b[2],1);
        }
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      }

      // layer 0
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
2786
    //  print_ints("re",&mmtmpD0);
2787

2788 2789 2790 2791 2792
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
2793
           // print_ints("im",&mmtmpD1);
2794
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
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      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
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           // printf("Shift: %d\n",output_shift);
          // print_ints("re(shift)",&mmtmpD0);
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      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
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           // print_ints("im(shift)",&mmtmpD1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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          //  print_ints("c0",&mmtmpD2);
          // print_ints("c1",&mmtmpD3);
2804
      rxdataF_comp0_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2805

2806 2807
           // print_shorts("rx:",rxdataF128);
           // print_shorts("ch:",dl_ch0_128);
2808
      //print_shorts("pack:",rxdataF_comp0_128);
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
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      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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2823
      rxdataF_comp0_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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           //  print_shorts("rx:",rxdataF128+1);
            //  print_shorts("ch:",dl_ch0_128+1);
2826
            // print_shorts("pack:",rxdataF_comp0_128+1);
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2828
      if (pilots==0) {
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        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
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        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
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        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp0_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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           //   print_shorts("rx:",rxdataF128+2);
           //   print_shorts("ch:",dl_ch0_128+2);
            //  print_shorts("pack:",rxdataF_comp0_128+2);
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      }
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2850 2851 2852
      // layer 1
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],rxdataF128[0]);
2853
           //  print_ints("re",&mmtmpD0);
2854

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2855
     // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
2856
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[0],_MM_SHUFFLE(2,3,0,1));
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      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
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            //  print_ints("im",&mmtmpD1);
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      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
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      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
2863
             // print_ints("re(shift)",&mmtmpD0);
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      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
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             // print_ints("im(shift)",&mmtmpD1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2868 2869
             // print_ints("c0",&mmtmpD2);
             // print_ints("c1",&mmtmpD3);
2870
      rxdataF_comp1_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2871 2872 2873
            // print_shorts("rx:",rxdataF128);
            //  print_shorts("ch:",dl_ch1_128);
            // print_shorts("pack:",rxdataF_comp1_128);
2874

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2875
     // multiply by conjugated channel
2876
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[1],rxdataF128[1]);
2877
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
2878
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[1],_MM_SHUFFLE(2,3,0,1));
2879 2880 2881 2882
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2883 2884
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2885 2886
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2887

2888
      rxdataF_comp1_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2889 2890
            //  print_shorts("rx:",rxdataF128+1);
           // print_shorts("ch:",dl_ch1_128+1);
2891
            // print_shorts("pack:",rxdataF_comp1_128+1);
2892

2893
      if (pilots==0) {
2894 2895 2896 2897 2898 2899 2900 2901
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2902 2903
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2904 2905 2906 2907
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp1_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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          //   print_shorts("rx:",rxdataF128+2);
           //  print_shorts("ch:",dl_ch1_128+2);
             //         print_shorts("pack:",rxdataF_comp1_128+2);
2911 2912 2913 2914 2915 2916 2917 2918 2919 2920

        dl_ch0_128+=3;
        dl_ch1_128+=3;
        dl_ch_mag0_128+=3;
        dl_ch_mag1_128+=3;
        dl_ch_mag0_128b+=3;
        dl_ch_mag1_128b+=3;
        rxdataF128+=3;
        rxdataF_comp0_128+=3;
        rxdataF_comp1_128+=3;
2921 2922
      }
      else {
2923 2924 2925 2926 2927 2928 2929 2930 2931
        dl_ch0_128+=2;
        dl_ch1_128+=2;
        dl_ch_mag0_128+=2;
        dl_ch_mag1_128+=2;
        dl_ch_mag0_128b+=2;
        dl_ch_mag1_128b+=2;
        rxdataF128+=2;
        rxdataF_comp0_128+=2;
        rxdataF_comp1_128+=2;
2932
      }
2933

2934
    } // rb loop
2935
    Nre = (pilots==0) ? 12 : 8;
2936

2937
    precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2938
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2939

2940
    precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
2941
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2942
  } // rx_antennas
2943

2944 2945
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,measurements->n0_power_tot);
  measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,measurements->n0_power_tot);
2946

2947
 // printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2948
     //  measurements->precoded_cqi_dB[eNB_id][0]);
2949

2950
  _mm_empty();
2951
  _m_empty();
2952

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2953
  #elif defined(__arm__)
2954

2955 2956
  unsigned short rb,Nre;
  unsigned char aarx,symbol_mod,pilots=0;
2957
  int precoded_signal_strength0=0,precoded_signal_strength1=0, rx_power_correction;
2958 2959 2960
  int16x4_t *dl_ch0_128,*rxdataF128;
  int16x4_t *dl_ch1_128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
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2962 2963 2964 2965
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag0_128,*dl_ch_mag0_128b,*dl_ch_mag1_128,*dl_ch_mag1_128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp0_128,*rxdataF_comp1_128;
  int16x8_t QAM_amp0_128,QAM_amp0_128b,QAM_amp1_128,QAM_amp1_128b;
  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
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2967 2968 2969
  int **rxdataF_ext           = pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = pdsch_vars->dl_ch_estimates_ext;
  int **dl_ch_mag0            = pdsch_vars->dl_ch_mag0;
2970
  int **dl_ch_mag1            = pdsch_vars->dl_ch_mag1[harq_pid][round];
2971
  int **dl_ch_magb0           = pdsch_vars->dl_ch_magb0;
2972
  int **dl_ch_magb1           = pdsch_vars->dl_ch_magb1[harq_pid][round];
2973
  int **rxdataF_comp0         = pdsch_vars->rxdataF_comp0;
2974
  int **rxdataF_comp1         = pdsch_vars->rxdataF_comp1[harq_pid][round];
2975

2976
  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
2977

2978
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
2979

2980
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
2981
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
2982
      { nb_rb=1+(5*nb_rb/6); }
2983

2984 2985
    else
      { pilots=1; }
2986
  }
2987

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2988
  rx_power_correction=1;
2989

2990
  if (mod_order0 == 4) {
2991 2992
    QAM_amp0_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp0_128b = vmovq_n_s16(0);
2993

2994
  } else if (mod_order0 == 6) {
2995 2996
    QAM_amp0_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp0_128b = vmovq_n_s16(QAM64_n2);
2997
  }
2998

2999
  if (mod_order1 == 4) {
3000 3001
    QAM_amp1_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp1_128b = vmovq_n_s16(0);
3002

3003
  } else if (mod_order1 == 6) {
3004 3005
    QAM_amp1_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp1_128b = vmovq_n_s16(QAM64_n2);
3006
  }
3007

3008
  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
3009

3010
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3011 3012 3013



3014 3015 3016 3017
    dl_ch0_128          = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch0_128b          = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128b          = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
3018
    dl_ch_mag0_128      = (int16x8_t*)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12];
3019
    dl_ch_mag0_128b     = (int16x8_t*)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];
3020
    dl_ch_mag1_128      = (int16x8_t*)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];
3021
    dl_ch_mag1_128b     = (int16x8_t*)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];
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    rxdataF128          = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp0_128   = (int16x8_t*)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp1_128   = (int16x8_t*)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12];
3025

3026
    for (rb=0; rb<nb_rb; rb++) {
3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049
      if (mmse_flag == 0) {
        // combine TX channels using precoder from pmi
        if (mimo_mode==LARGE_CDD) {
          prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
          prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
          prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
          prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
          if (pilots==0) {
            prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
          }
        }else {
          LOG_E(PHY,"Unknown MIMO mode\n");
          return;
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3050 3051
        }
      }
3052 3053 3054


      if (mod_order0>2) {
3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089
        // get channel amplitude if not QPSK
        mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[0]);
        // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
        mmtmpD1 = vmull_s16(dl_ch0_128[1], dl_ch0_128[1]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
        mmtmpD0 = vmull_s16(dl_ch0_128[2], dl_ch0_128[2]);
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[3]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

        if (pilots==0) {
          mmtmpD0 = vmull_s16(dl_ch0_128[4], dl_ch0_128[4]);
          mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
          mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[5]);
          mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
          mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


        }

        dl_ch_mag0_128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp0_128b);
        dl_ch_mag0_128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp0_128b);
        dl_ch_mag0_128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp0_128);
        dl_ch_mag0_128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp0_128);


        if (pilots==0) {
          dl_ch_mag0_128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp0_128b);
          dl_ch_mag0_128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp0_128);
        }
3090 3091 3092
      }

      if (mod_order1>2) {
3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127
        // get channel amplitude if not QPSK
        mmtmpD0 = vmull_s16(dl_ch1_128[0], dl_ch1_128[0]);
        // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
        mmtmpD1 = vmull_s16(dl_ch1_128[1], dl_ch1_128[1]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
        mmtmpD0 = vmull_s16(dl_ch1_128[2], dl_ch1_128[2]);
        mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
        mmtmpD1 = vmull_s16(dl_ch1_128[3], dl_ch1_128[3]);
        mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
        mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

        if (pilots==0) {
          mmtmpD0 = vmull_s16(dl_ch1_128[4], dl_ch1_128[4]);
          mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
          mmtmpD1 = vmull_s16(dl_ch1_128[5], dl_ch1_128[5]);
          mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
          mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));


        }

        dl_ch_mag1_128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp1_128b);
        dl_ch_mag1_128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp1_128b);
        dl_ch_mag1_128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp1_128);
        dl_ch_mag1_128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp1_128);


        if (pilots==0) {
          dl_ch_mag1_128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp1_128b);
          dl_ch_mag1_128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp1_128);
        }
3128
      }
3129

3130
      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
3131
      //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
3132
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
3133
      //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
3134
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3135
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3136 3137
      //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

3138
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
3139
      //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
3140
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
3141
      //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
3142
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3143
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3144
      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
3145

3146 3147 3148
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3149

3150 3151 3152
      mmtmpD0 = vmull_s16(dl_ch0_128[2], rxdataF128[2]);
      mmtmpD1 = vmull_s16(dl_ch0_128[3], rxdataF128[3]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3153
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3154

3155 3156 3157
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[3],*(int16x4_t*)conj)), rxdataF128[3]);
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3158
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3159

3160 3161 3162
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3163

3164 3165 3166 3167
      // second stream
      mmtmpD0 = vmull_s16(dl_ch1_128[0], rxdataF128[0]);
      mmtmpD1 = vmull_s16(dl_ch1_128[1], rxdataF128[1]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3168
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3169
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
3170

3171 3172 3173
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
      //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3174
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3175
      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
3176

3177 3178 3179
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3180

3181 3182 3183
      mmtmpD0 = vmull_s16(dl_ch1_128[2], rxdataF128[2]);
      mmtmpD1 = vmull_s16(dl_ch1_128[3], rxdataF128[3]);
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3184
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3185

3186 3187 3188
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[2],*(int16x4_t*)conj)), rxdataF128[2]);
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[3],*(int16x4_t*)conj)), rxdataF128[3]);
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3189
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3190

3191 3192 3193
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3194

3195
      if (pilots==0) {
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        mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
        mmtmpD1 = vmull_s16(dl_ch0_128[5], rxdataF128[5]);
        mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
                               vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

        mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
        mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
        mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
                               vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp0_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
        mmtmpD0 = vmull_s16(dl_ch1_128[4], rxdataF128[4]);
        mmtmpD1 = vmull_s16(dl_ch1_128[5], rxdataF128[5]);
        mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
                               vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

        mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
        mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
        mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
                               vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp1_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
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      }
    }
3226 3227 3228



3229
    Nre = (pilots==0) ? 12 : 8;
3230

3231 3232
    // rx_antennas
  }
3233 3234


3235
  Nre = (pilots==0) ? 12 : 8;
3236

3237
  precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
3238
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
3239
  precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
3240
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
3241

3242 3243
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,measurements->n0_power_tot);
  measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,measurements->n0_power_tot);
3244

3245
#endif
3246
}
3247

3248

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void dlsch_dual_stream_correlation(LTE_DL_FRAME_PARMS *frame_parms,
                                   unsigned char symbol,
                                   unsigned short nb_rb,
                                   int **dl_ch_estimates_ext,
                                   int **dl_ch_estimates_ext_i,
                                   int **dl_ch_rho_ext,
3255 3256 3257
                                   unsigned char output_shift)
{

3258 3259
#if defined(__x86_64__)||defined(__i386__)

3260
  unsigned short rb;
3261
  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
3262
  unsigned char aarx,symbol_mod,pilots=0;
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  //    printf("dlsch_dual_stream_correlation: symbol %d\n",symbol);

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
    pilots=1;
  }
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  //  printf("Dual stream correlation (%p)\n",dl_ch_estimates_ext_i);

3274 3275
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

3276
    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
3277

3278
    if (dl_ch_estimates_ext_i == NULL) // TM3/4
3279
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext[aarx + frame_parms->nb_antennas_rx][symbol*frame_parms->N_RB_DL*12];
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    else
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][symbol*frame_parms->N_RB_DL*12];
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3283
    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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    for (rb=0; rb<nb_rb; rb++) {
3286 3287
      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
3288
      //      print_ints("re",&mmtmpD0);
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      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[0]);
3294
      //      print_ints("im",&mmtmpD1);
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      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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      //      print_ints("re(shift)",&mmtmpD0);
3298
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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      //      print_ints("im(shift)",&mmtmpD1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
3302 3303
      //      print_ints("c0",&mmtmpD2);
      //      print_ints("c1",&mmtmpD3);
3304
      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
3305
    // print_shorts("rho 0:",dl_ch_rho128);
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[1],dl_ch128i[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
      dl_ch_rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
3319

3320 3321

      if (pilots==0) {
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3322

3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[2],dl_ch128i[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        dl_ch_rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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       dl_ch128+=3;
        dl_ch128i+=3;
        dl_ch_rho128+=3;
      } else {

        dl_ch128+=2;
        dl_ch128i+=2;
        dl_ch_rho128+=2;
      }
3346
    }
3347

3348
  }
3349

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  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}

3358

3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369
void dlsch_detection_mrc(LTE_DL_FRAME_PARMS *frame_parms,
                         int **rxdataF_comp,
                         int **rxdataF_comp_i,
                         int **rho,
                         int **rho_i,
                         int **dl_ch_mag,
                         int **dl_ch_magb,
                         int **dl_ch_mag_i,
                         int **dl_ch_magb_i,
                         unsigned char symbol,
                         unsigned short nb_rb,
3370 3371 3372
                         unsigned char dual_stream_UE)
{

3373 3374
#if defined(__x86_64__)||defined(__i386__)

3375 3376
  unsigned char aatx;
  int i;
3377
  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,
3378
    *dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;
3379 3380 3381

  if (frame_parms->nb_antennas_rx>1) {

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3382
    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3383 3384 3385 3386 3387 3388 3389

      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0      = (__m128i *)&dl_ch_mag[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1      = (__m128i *)&dl_ch_mag[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
3390 3391 3392

      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
      for (i=0;i<nb_rb*3;i++) {
3393 3394 3395
        rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
        dl_ch_mag128_0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
        dl_ch_mag128_0b[i]   = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
3396
          //       print_shorts("mrc comp0:",&rxdataF_comp128_0[i]);
3397 3398
        //       print_shorts("mrc mag0:",&dl_ch_mag128_0[i]);
        //       print_shorts("mrc mag0b:",&dl_ch_mag128_0b[i]);
3399
        //      print_shorts("mrc rho1:",&rho128_1[i]);
3400

3401 3402 3403 3404 3405 3406 3407
      }
    }

    if (rho) {
      rho128_0 = (__m128i *) &rho[0][symbol*frame_parms->N_RB_DL*12];
      rho128_1 = (__m128i *) &rho[1][symbol*frame_parms->N_RB_DL*12];
      for (i=0;i<nb_rb*3;i++) {
3408 3409
        //      print_shorts("mrc rho0:",&rho128_0[i]);
        //      print_shorts("mrc rho1:",&rho128_1[i]);
3410
        rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
3411 3412 3413 3414 3415 3416 3417
      }
    }


    if (dual_stream_UE == 1) {
      rho128_i0 = (__m128i *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (__m128i *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
3418 3419 3420 3421 3422
      rxdataF_comp128_i0   = (__m128i *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i1   = (__m128i *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0      = (__m128i *)&dl_ch_mag_i[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1      = (__m128i *)&dl_ch_mag_i[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0b     = (__m128i *)&dl_ch_magb_i[0][symbol*frame_parms->N_RB_DL*12];
3423
      dl_ch_mag128_i1b     = (__m128i *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];
3424 3425 3426 3427 3428 3429 3430

      for (i=0; i<nb_rb*3; i++) {
        rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i1[i],1));
        rho128_i0[i]           = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));

        dl_ch_mag128_i0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0[i],1),_mm_srai_epi16(dl_ch_mag128_i1[i],1));
        dl_ch_mag128_i0b[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0b[i],1),_mm_srai_epi16(dl_ch_mag128_i1b[i],1));
3431 3432 3433
      }
    }
  }
3434

3435 3436
  _mm_empty();
  _m_empty();
3437 3438 3439

#elif defined(__arm__)

3440 3441 3442 3443 3444 3445
  unsigned char aatx;
  int i;
  int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*rxdataF_comp128_i0,*rxdataF_comp128_i1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1,*dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;

  if (frame_parms->nb_antennas_rx>1) {

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    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495

      rxdataF_comp128_0   = (int16x8_t *)&rxdataF_comp[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_1   = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0      = (int16x8_t *)&dl_ch_mag[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1      = (int16x8_t *)&dl_ch_mag[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_0b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_1b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];

      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
      for (i=0; i<nb_rb*3; i++) {
        rxdataF_comp128_0[i] = vhaddq_s16(rxdataF_comp128_0[i],rxdataF_comp128_1[i]);
        dl_ch_mag128_0[i]    = vhaddq_s16(dl_ch_mag128_0[i],dl_ch_mag128_1[i]);
        dl_ch_mag128_0b[i]   = vhaddq_s16(dl_ch_mag128_0b[i],dl_ch_mag128_1b[i]);
      }
    }

    if (rho) {
      rho128_0 = (int16x8_t *) &rho[0][symbol*frame_parms->N_RB_DL*12];
      rho128_1 = (int16x8_t *) &rho[1][symbol*frame_parms->N_RB_DL*12];

      for (i=0; i<nb_rb*3; i++) {
        //  print_shorts("mrc rho0:",&rho128_0[i]);
        //  print_shorts("mrc rho1:",&rho128_1[i]);
        rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
      }
    }


    if (dual_stream_UE == 1) {
      rho128_i0 = (int16x8_t *) &rho_i[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (int16x8_t *) &rho_i[1][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i0   = (int16x8_t *)&rxdataF_comp_i[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i1   = (int16x8_t *)&rxdataF_comp_i[1][symbol*frame_parms->N_RB_DL*12];

      dl_ch_mag128_i0      = (int16x8_t *)&dl_ch_mag_i[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1      = (int16x8_t *)&dl_ch_mag_i[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0b     = (int16x8_t *)&dl_ch_magb_i[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1b     = (int16x8_t *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];

      for (i=0; i<nb_rb*3; i++) {
        rxdataF_comp128_i0[i] = vhaddq_s16(rxdataF_comp128_i0[i],rxdataF_comp128_i1[i]);
        rho128_i0[i]          = vhaddq_s16(rho128_i0[i],rho128_i1[i]);

        dl_ch_mag128_i0[i]    = vhaddq_s16(dl_ch_mag128_i0[i],dl_ch_mag128_i1[i]);
        dl_ch_mag128_i0b[i]   = vhaddq_s16(dl_ch_mag128_i0b[i],dl_ch_mag128_i1b[i]);
      }
    }
  }

3496
#endif
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}

3499
void dlsch_detection_mrc_TM34(LTE_DL_FRAME_PARMS *frame_parms,
3500
                              LTE_UE_PDSCH *pdsch_vars,
3501 3502 3503 3504 3505
                              int harq_pid,
                              int round,
                              unsigned char symbol,
                              unsigned short nb_rb,
                              unsigned char dual_stream_UE) {
3506

3507
  int i;
3508 3509 3510 3511 3512
  __m128i *rxdataF_comp128_0,*rxdataF_comp128_1;
  __m128i *dl_ch_mag128_0,*dl_ch_mag128_1;
  __m128i *dl_ch_mag128_0b,*dl_ch_mag128_1b;
  __m128i *rho128_0, *rho128_1;

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  int **rxdataF_comp0           = pdsch_vars->rxdataF_comp0;
  int **rxdataF_comp1           = pdsch_vars->rxdataF_comp1[harq_pid][round];
  int **dl_ch_rho_ext           = pdsch_vars->dl_ch_rho_ext[harq_pid][round]; //for second stream
  int **dl_ch_rho2_ext          = pdsch_vars->dl_ch_rho2_ext;
  int **dl_ch_mag0              = pdsch_vars->dl_ch_mag0;
  int **dl_ch_mag1              = pdsch_vars->dl_ch_mag1[harq_pid][round];
  int **dl_ch_magb0             = pdsch_vars->dl_ch_magb0;
  int **dl_ch_magb1             = pdsch_vars->dl_ch_magb1[harq_pid][round];
3522

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  rxdataF_comp128_0   = (__m128i *)&rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12];
  rxdataF_comp128_1   = (__m128i *)&rxdataF_comp0[1][symbol*frame_parms->N_RB_DL*12];
  dl_ch_mag128_0      = (__m128i *)&dl_ch_mag0[0][symbol*frame_parms->N_RB_DL*12];
  dl_ch_mag128_1      = (__m128i *)&dl_ch_mag0[1][symbol*frame_parms->N_RB_DL*12];
  dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb0[0][symbol*frame_parms->N_RB_DL*12];
  dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb0[1][symbol*frame_parms->N_RB_DL*12];
  rho128_0 = (__m128i *) &dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12];
  rho128_1 = (__m128i *) &dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12];
3531 3532

      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571
  for (i=0;i<nb_rb*3;i++) {
    rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
    dl_ch_mag128_0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
    dl_ch_mag128_0b[i]   = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
    rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));

    if (frame_parms->nb_antennas_rx>2) {

      __m128i *rxdataF_comp128_2 = NULL;
      __m128i *rxdataF_comp128_3 = NULL;
      __m128i *dl_ch_mag128_2 = NULL;
      __m128i *dl_ch_mag128_3 = NULL;
      __m128i *dl_ch_mag128_2b = NULL;
      __m128i *dl_ch_mag128_3b = NULL;
      __m128i *rho128_2 = NULL;
      __m128i *rho128_3 = NULL;

      rxdataF_comp128_2   = (__m128i *)&rxdataF_comp0[2][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_3   = (__m128i *)&rxdataF_comp0[3][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_2      = (__m128i *)&dl_ch_mag0[2][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_3      = (__m128i *)&dl_ch_mag0[3][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_2b     = (__m128i *)&dl_ch_magb0[2][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_3b     = (__m128i *)&dl_ch_magb0[3][symbol*frame_parms->N_RB_DL*12];
      rho128_2 = (__m128i *) &dl_ch_rho2_ext[2][symbol*frame_parms->N_RB_DL*12];
      rho128_3 = (__m128i *) &dl_ch_rho2_ext[3][symbol*frame_parms->N_RB_DL*12];
      /*rxdataF_comp*/
      rxdataF_comp128_2[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_2[i],1),_mm_srai_epi16(rxdataF_comp128_3[i],1));
      rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_2[i],1));
      /*dl_ch_mag*/
      dl_ch_mag128_2[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_2[i],1),_mm_srai_epi16(dl_ch_mag128_3[i],1));
      dl_ch_mag128_0[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_2[i],1));
      /*dl_ch_mag*/
      dl_ch_mag128_2b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_2b[i],1),_mm_srai_epi16(dl_ch_mag128_3b[i],1));
      dl_ch_mag128_0b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_2b[i],1));
      /*rho*/
      rho128_2[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_2[i],1),_mm_srai_epi16(rho128_3[i],1));
      rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_2[i],1));
    }
  }
3572

3573
    if (dual_stream_UE == 1) {
3574

3575 3576 3577 3578
      __m128i *dl_ch_mag128_i0, *dl_ch_mag128_i1;
      __m128i *dl_ch_mag128_i0b, *dl_ch_mag128_i1b;
      __m128i *rho128_i0, *rho128_i1;
      __m128i *rxdataF_comp128_i0, *rxdataF_comp128_i1;
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      rxdataF_comp128_i0   = (__m128i *)&rxdataF_comp1[0][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128_i1   = (__m128i *)&rxdataF_comp1[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0      = (__m128i *)&dl_ch_mag1[0][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i1      = (__m128i *)&dl_ch_mag1[1][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128_i0b     = (__m128i *)&dl_ch_magb1[0][symbol*frame_parms->N_RB_DL*12];
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      dl_ch_mag128_i1b     = (__m128i *)&dl_ch_magb1[1][symbol*frame_parms->N_RB_DL*12];
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      rho128_i0 = (__m128i *) &dl_ch_rho_ext[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (__m128i *) &dl_ch_rho_ext[1][symbol*frame_parms->N_RB_DL*12];


3590 3591 3592 3593
      for (i=0;i<nb_rb*3;i++) {
        rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i1[i],1));
        dl_ch_mag128_i0[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0[i],1),_mm_srai_epi16(dl_ch_mag128_i1[i],1));
        dl_ch_mag128_i0b[i]    = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0b[i],1),_mm_srai_epi16(dl_ch_mag128_i1b[i],1));
3594
        rho128_i0[i]           = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
3595

3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629
        if (frame_parms->nb_antennas_rx>2) {

          __m128i *rxdataF_comp128_i2 = NULL;
          __m128i *rxdataF_comp128_i3 = NULL;
          __m128i *dl_ch_mag128_i2 = NULL;
          __m128i *dl_ch_mag128_i3 = NULL;
          __m128i *dl_ch_mag128_i2b = NULL;
          __m128i *dl_ch_mag128_i3b = NULL;
          __m128i *rho128_i2 = NULL;
          __m128i *rho128_i3 = NULL;

          rxdataF_comp128_i2   = (__m128i *)&rxdataF_comp1[2][symbol*frame_parms->N_RB_DL*12];
          rxdataF_comp128_i3   = (__m128i *)&rxdataF_comp1[3][symbol*frame_parms->N_RB_DL*12];
          dl_ch_mag128_i2      = (__m128i *)&dl_ch_mag1[2][symbol*frame_parms->N_RB_DL*12];
          dl_ch_mag128_i3      = (__m128i *)&dl_ch_mag1[3][symbol*frame_parms->N_RB_DL*12];
          dl_ch_mag128_i2b     = (__m128i *)&dl_ch_magb1[2][symbol*frame_parms->N_RB_DL*12];
          dl_ch_mag128_i3b     = (__m128i *)&dl_ch_magb1[3][symbol*frame_parms->N_RB_DL*12];
          rho128_i2 = (__m128i *) &dl_ch_rho_ext[2][symbol*frame_parms->N_RB_DL*12];
          rho128_i3 = (__m128i *) &dl_ch_rho_ext[3][symbol*frame_parms->N_RB_DL*12];


         /*rxdataF_comp*/
          rxdataF_comp128_i2[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i2[i],1),_mm_srai_epi16(rxdataF_comp128_i3[i],1));
          rxdataF_comp128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_i0[i],1),_mm_srai_epi16(rxdataF_comp128_i2[i],1));
          /*dl_ch_mag*/
          dl_ch_mag128_i2[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i2[i],1),_mm_srai_epi16(dl_ch_mag128_i3[i],1));
          dl_ch_mag128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0[i],1),_mm_srai_epi16(dl_ch_mag128_i2[i],1));
          /*dl_ch_mag*/
          dl_ch_mag128_i2b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i2b[i],1),_mm_srai_epi16(dl_ch_mag128_i3b[i],1));
          dl_ch_mag128_i0b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_i0b[i],1),_mm_srai_epi16(dl_ch_mag128_i2b[i],1));
          /*rho*/
          rho128_i2[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i2[i],1),_mm_srai_epi16(rho128_i3[i],1));
          rho128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i2[i],1));
        }
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      }
    }
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  _mm_empty();
  _m_empty();
}

3637 3638 3639
void dlsch_scale_channel(int **dl_ch_estimates_ext,
                         LTE_DL_FRAME_PARMS *frame_parms,
                         LTE_UE_DLSCH_t **dlsch_ue,
3640
                         uint8_t symbol,
3641 3642
                         unsigned short nb_rb)
{
3643

3644 3645
#if defined(__x86_64__)||defined(__i386__)

3646 3647
  short rb, ch_amp;
  unsigned char aatx,aarx,pilots=0,symbol_mod;
3648 3649
  __m128i *dl_ch128, ch_amp128;

3650 3651 3652
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
3653
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
3654
      nb_rb=1+(5*nb_rb/6);
3655
    else
3656 3657 3658 3659 3660
      pilots=1;
  }

  // Determine scaling amplitude based the symbol

3661
  ch_amp = ((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
3662

3663
  LOG_D(PHY,"Scaling PDSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n",symbol_mod,ch_amp,pilots,nb_rb,frame_parms->Ncp,symbol);
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3664
   // printf("Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
3665 3666 3667

  ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13

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3668
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3669
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3670 3671

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
3672

3673
      for (rb=0;rb<nb_rb;rb++) {
3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686

        dl_ch128[0] = _mm_mulhi_epi16(dl_ch128[0],ch_amp128);
        dl_ch128[0] = _mm_slli_epi16(dl_ch128[0],3);

        dl_ch128[1] = _mm_mulhi_epi16(dl_ch128[1],ch_amp128);
        dl_ch128[1] = _mm_slli_epi16(dl_ch128[1],3);

        if (pilots) {
          dl_ch128+=2;
        } else {
          dl_ch128[2] = _mm_mulhi_epi16(dl_ch128[2],ch_amp128);
          dl_ch128[2] = _mm_slli_epi16(dl_ch128[2],3);
          dl_ch128+=3;
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3687

3688 3689
        }
      }
3690 3691
    }
  }
3692

3693 3694 3695
#elif defined(__arm__)

#endif
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}

//compute average channel_level on each (TX,RX) antenna pair
void dlsch_channel_level(int **dl_ch_estimates_ext,
3700
                         LTE_DL_FRAME_PARMS *frame_parms,
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gabrielC committed
3701
                         int32_t *avg,
3702 3703 3704
                         uint8_t symbol,
                         unsigned short nb_rb)
{
3705

3706
#if defined(__x86_64__)||defined(__i386__)
3707
  //printf("symbol = %d\n", symbol);
3708

3709 3710
  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
3711
  __m128i *dl_ch128, avg128D;
3712

3713 3714
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

3715
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3716
    nre=8;
3717
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3718 3719 3720 3721
    nre=10;
  else
    nre=12;

3722
  //nb_rb*nre = y * 2^x
3723
  int16_t x = factor2(nb_rb*nre);
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3724
  int16_t y = (nb_rb*nre)>>x;
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3725

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3726
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3727
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3728 3729 3730
       //clear average level
      //printf("aatx = %d, aarx = %d, aatx*frame_parms->nb_antennas_rx + aarx] = %d \n", aatx, aarx, aatx*frame_parms->nb_antennas_rx + aarx);

3731
      avg128D = _mm_setzero_si128();
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      // 5 is always a symbol with no pilots for both normal and extended prefix

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3735
      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*2 + aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0;rb<nb_rb;rb++) {
3738 3739

        //printf("rb %d : ",rb);
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        avg128D = _mm_add_epi32(avg128D,_mm_srai_epi32(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
        avg128D = _mm_add_epi32(avg128D,_mm_srai_epi32(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));
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        //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[0], coeff128),15)));
        //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[1], coeff128),15)));
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3746
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3747
          dl_ch128+=2;
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        }
        else {
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           avg128D = _mm_add_epi32(avg128D,_mm_srai_epi32(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x));
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          //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[2], coeff128),15)));
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          dl_ch128+=3;
        }
3754 3755 3756 3757 3758 3759 3760

          /*if(rb==0){
            print_shorts("dl_ch128",&dl_ch128[0]);
            print_shorts("dl_ch128",&dl_ch128[1]);
            print_shorts("dl_ch128",&dl_ch128[2]);
          }*/

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      }

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      avg[aatx*frame_parms->nb_antennas_rx + aarx] =(((int32_t*)&avg128D)[0] +
                                                     ((int32_t*)&avg128D)[1] +
                                                     ((int32_t*)&avg128D)[2] +
                                                     ((int32_t*)&avg128D)[3])/y;
      }
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  _mm_empty();
  _m_empty();

3772 3773
#elif defined(__arm__)

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  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t avg128D;
  int16x4_t *dl_ch128;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

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3781
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3782 3783 3784 3785 3786
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

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      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[0],dl_ch128[0]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[1],dl_ch128[1]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3]));

3797
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813
          dl_ch128+=4;
        } else {
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[5],dl_ch128[5]));
          dl_ch128+=6;
        }

        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
      }

3814
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
3815
        nre=8;
3816
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
3817 3818 3819 3820
        nre=10;
      else
        nre=12;

3821 3822 3823 3824
      avg[aatx*frame_parms->nb_antennas_rx + aarx] = (((int32_t*)&avg128D)[0] +
                                                          ((int32_t*)&avg128D)[1] +
                                                          ((int32_t*)&avg128D)[2] +
                                                          ((int32_t*)&avg128D)[3])/(nb_rb*nre);
3825

3826
      //printf("Channel level : %d\n",avg[aatx*(frame_parms->nb_antennas_rx-1) + aarx]);
3827
    }
3828
#endif
3829

3830 3831
}

3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843
void dlsch_channel_level_core(int **dl_ch_estimates_ext,
                              int32_t *avg,
                              int n_tx,
                              int n_rx,
                              int length,
                              int start_point)
{

#if defined(__x86_64__)||defined(__i386__)

  short ii;
  int aatx,aarx;
3844
  int length_mod8;
3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855
  int length2;
  __m128i *dl_ch128, avg128D;

  int16_t x = factor2(length);
  int16_t y = (length)>>x;

  for (aatx=0; aatx<n_tx; aatx++)
    for (aarx=0; aarx<n_rx; aarx++) {

      avg128D = _mm_setzero_si128();

3856
      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*2 + aarx][start_point];
3857

3858
      length_mod8=length&7;
3859

3860
      if (length_mod8 == 0){
3861

3862
        length2 = length>>3;
3863 3864

        for (ii=0;ii<length2;ii++) {
3865 3866
          avg128D = _mm_add_epi32(avg128D,_mm_srai_epi32(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
          avg128D = _mm_add_epi32(avg128D,_mm_srai_epi32(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));
3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885

          dl_ch128+=2;
        }
      }else {
        printf ("Channel level: Received number of subcarriers is not multiple of 4, \n"
                 "need to adapt the code!\n");
      }


      avg[aatx*n_rx + aarx] =(((int32_t*)&avg128D)[0] +
                              ((int32_t*)&avg128D)[1] +
                              ((int32_t*)&avg128D)[2] +
                              ((int32_t*)&avg128D)[3])/y;
      //printf("Channel level [%d]: %d\n",aatx*n_rx + aarx, avg[aatx*n_rx + aarx]);
      }

  _mm_empty();
  _m_empty();

3886
 /* FIXME This part needs to be adapted like the one above */
3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939
#elif defined(__arm__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t avg128D;
  int16x4_t *dl_ch128;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[0],dl_ch128[0]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[1],dl_ch128[1]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3]));

        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
          dl_ch128+=4;
        } else {
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[5],dl_ch128[5]));
          dl_ch128+=6;
        }
      }


      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
        nre=8;
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
        nre=10;
      else
        nre=12;

      avg[aatx*frame_parms->nb_antennas_rx + aarx] = (((int32_t*)&avg128D)[0] +
                                                          ((int32_t*)&avg128D)[1] +
                                                          ((int32_t*)&avg128D)[2] +
                                                          ((int32_t*)&avg128D)[3])/(nb_rb*nre);

      //printf("Channel level : %d\n",avg[aatx*(frame_parms->nb_antennas_rx-1) + aarx]);
    }
#endif

}

3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966
void dlsch_channel_level_median(int **dl_ch_estimates_ext,
                                int32_t *median,
                                int n_tx,
                                int n_rx,
                                int length,
                                int start_point)
{

#if defined(__x86_64__)||defined(__i386__)

  short ii;
  int aatx,aarx;
  int length_mod4;
  int length2;
  int max = 0, min=0;
  int norm_pack;
  __m128i *dl_ch128, norm128D;

  int16_t x = factor2(length);
  int16_t y = (length)>>x;

  for (aatx=0; aatx<n_tx; aatx++){
    for (aarx=0; aarx<n_rx; aarx++) {
      max = 0;
      min = 0;
      norm128D = _mm_setzero_si128();

3967
      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*2 + aarx][start_point];
3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040

      length_mod4=length&3;

      length2 = length>>2;

      for (ii=0;ii<length2;ii++) {
        norm128D = _mm_srai_epi32( _mm_madd_epi16(dl_ch128[0],dl_ch128[0]), 1);
          //print_ints("norm128D",&norm128D[0]);

        norm_pack = ((int32_t*)&norm128D)[0] +
                    ((int32_t*)&norm128D)[1] +
                    ((int32_t*)&norm128D)[2] +
                    ((int32_t*)&norm128D)[3];

        if (norm_pack > max)
          max = norm_pack;
        if (norm_pack < min)
          min = norm_pack;

          dl_ch128+=1;
      }

        median[aatx*n_rx + aarx]  = (max+min)>>1;

     // printf("Channel level  median [%d]: %d\n",aatx*n_rx + aarx, median[aatx*n_rx + aarx]);
      }
    }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t norm128D;
  int16x4_t *dl_ch128;

  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++){
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      max = 0;
      min = 0;
      norm128D = vdupq_n_s32(0);

      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];

      length_mod8=length&3;
      length2 = length>>2;

      for (ii=0;ii<length2;ii++) {
        norm128D = vshrq_n_u32(vmull_s16(dl_ch128[0],dl_ch128[0]), 1);
        norm_pack = ((int32_t*)&norm128D)[0] +
                    ((int32_t*)&norm128D)[1] +
                    ((int32_t*)&norm128D)[2] +
                    ((int32_t*)&norm128D)[3];

        if (norm_pack > max)
          max = norm_pack;
        if (norm_pack < min)
          min = norm_pack;

          dl_ch128+=1;
      }

        median[aatx*n_rx + aarx]  = (max+min)>>1;

      //printf("Channel level  median [%d]: %d\n",aatx*n_rx + aarx, median[aatx*n_rx + aarx]);
      }
    }
#endif

}

4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283 4284 4285 4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530
void mmse_processing_oai(LTE_UE_PDSCH *pdsch_vars,
                     LTE_DL_FRAME_PARMS *frame_parms,
                     PHY_MEASUREMENTS *measurements,
                     unsigned char first_symbol_flag,
                     MIMO_mode_t mimo_mode,
                     unsigned short mmse_flag,
                     int noise_power,
                     unsigned char symbol,
                     unsigned short nb_rb){

  int **rxdataF_ext           = pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = pdsch_vars->dl_ch_estimates_ext;
  unsigned char *pmi_ext      = pdsch_vars->pmi_ext;
  int avg_00[frame_parms->nb_antenna_ports_eNB*frame_parms->nb_antennas_rx];
  int avg_01[frame_parms->nb_antenna_ports_eNB*frame_parms->nb_antennas_rx];
  int symbol_mod, length, start_point, nre;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
    nre=8;
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
    nre=10;
  else
    nre=12;

  length  = nre*nb_rb;
  start_point = symbol*nb_rb*12;


  mmse_processing_core(rxdataF_ext,
                       dl_ch_estimates_ext,
                       noise_power,
                       frame_parms->nb_antenna_ports_eNB,
                       frame_parms->nb_antennas_rx,
                       length,
                       start_point);


  /*dlsch_channel_aver_band(dl_ch_estimates_ext,
                          frame_parms,
                          chan_avg,
                          symbol,
                          nb_rb);


   for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
     for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
       H[aatx*frame_parms->nb_antennas_rx + aarx] = (float)(chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].r/(32768.0)) + I*(float)(chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].i/(32768.0));
      // printf("H [%d] = (%f, %f) \n", aatx*frame_parms->nb_antennas_rx + aarx, creal(H[aatx*frame_parms->nb_antennas_rx + aarx]), cimag(H[aatx*frame_parms->nb_antennas_rx + aarx]));
   }*/

    if (first_symbol_flag == 1){
      dlsch_channel_level_TM34(dl_ch_estimates_ext,
                                 frame_parms,
                                 pmi_ext,
                                 avg_00,
                                 avg_01,
                                 symbol,
                                 nb_rb,
                                 mmse_flag,
                                 mimo_mode);

      avg_00[0] = (log2_approx(avg_00[0])/2) + dlsch_demod_shift+4;// + 2 ;//+ 4;
      avg_01[0] = (log2_approx(avg_01[0])/2) + dlsch_demod_shift+4;// + 2 ;//+ 4;
      pdsch_vars->log2_maxh0 = cmax(avg_00[0],0);
      pdsch_vars->log2_maxh1 = cmax(avg_01[0],0);
  }
}

void mmse_processing_core(int32_t **rxdataF_ext,
                          int32_t **dl_ch_estimates_ext,
                          int noise_power,
                          int n_tx,
                          int n_rx,
                          int length,
                          int start_point){

  int aatx, aarx, re;
  float imag;
  float real;


  float complex **W_MMSE= malloc(n_tx*n_rx*sizeof(float complex*));
   for (int j=0; j<n_tx*n_rx; j++) {
     W_MMSE[j] = malloc(sizeof(float complex)*length);
  }

  float complex *H=  malloc(n_tx*n_rx*sizeof(float complex));
  float complex *W_MMSE_re=  malloc(n_tx*n_rx*sizeof(float complex));

  float complex** dl_ch_estimates_ext_flcpx = malloc(n_tx*n_rx*sizeof(float complex*));
  for (int j=0; j<n_tx*n_rx; j++) {
    dl_ch_estimates_ext_flcpx[j] = malloc(sizeof(float complex)*length);
  }

  float complex** rxdataF_ext_flcpx = malloc(n_rx*sizeof(float complex*));
  for (int j=0; j<n_rx; j++) {
    rxdataF_ext_flcpx[j] = malloc(sizeof(float complex)*length);
  }

  chan_est_to_float(dl_ch_estimates_ext,
                    dl_ch_estimates_ext_flcpx,
                    n_tx,
                    n_rx,
                    length,
                    start_point);

  for (re=0; re<length; re++){
    for (aatx=0; aatx<n_tx; aatx++){
      for (aarx=0; aarx<n_rx; aarx++) {
        imag = cimag(dl_ch_estimates_ext_flcpx[aatx*n_rx + aarx][re]);
        real = creal(dl_ch_estimates_ext_flcpx[aatx*n_rx + aarx][re]);
        H[aatx*n_rx + aarx] = real+ I*imag;
      }
    }
    compute_MMSE(H, n_tx, noise_power, W_MMSE_re);
    for (aatx=0; aatx<n_tx; aatx++){
      for (aarx=0; aarx<n_rx; aarx++) {
        W_MMSE[aatx*n_rx + aarx][re] = W_MMSE_re[aatx*n_rx + aarx];
      }
    }
  }

  rxdataF_to_float(rxdataF_ext,
                   rxdataF_ext_flcpx,
                   n_rx,
                   length,
                   start_point);

  mult_mmse_rxdataF(W_MMSE,
                    rxdataF_ext_flcpx,
                    n_tx,
                    n_rx,
                    length,
                    start_point);


  mult_mmse_chan_est(W_MMSE,
                     dl_ch_estimates_ext_flcpx,
                     n_tx,
                     n_rx,
                     length,
                     start_point);


  float_to_rxdataF(rxdataF_ext,
                   rxdataF_ext_flcpx,
                   n_tx,
                   n_rx,
                   length,
                   start_point);


  float_to_chan_est(dl_ch_estimates_ext,
                    dl_ch_estimates_ext_flcpx,
                    n_tx,
                    n_rx,
                    length,
                    start_point);

free(W_MMSE);
free(H);
free(W_MMSE_re);
free(dl_ch_estimates_ext_flcpx);
free(rxdataF_ext_flcpx);

}


/*THIS FUNCTION TAKES FLOAT_POINT INPUT. SHOULD NOT BE USED WITH OAI*/
void mmse_processing_core_flp(float complex** rxdataF_ext_flcpx,
                              float complex **H,
                              int32_t **rxdataF_ext,
                              int32_t **dl_ch_estimates_ext,
                              float noise_power,
                              int n_tx,
                              int n_rx,
                              int length,
                              int start_point){

  int aatx, aarx, re;
  float max = 0;
  float one_over_max = 0;

  float complex **W_MMSE= malloc(n_tx*n_rx*sizeof(float complex*));
   for (int j=0; j<n_tx*n_rx; j++) {
     W_MMSE[j] = malloc(sizeof(float complex)*length);
  }

  float complex *H_re=  malloc(n_tx*n_rx*sizeof(float complex));
  float complex *W_MMSE_re=  malloc(n_tx*n_rx*sizeof(float complex));

  for (re=0; re<length; re++){
    for (aatx=0; aatx<n_tx; aatx++){
      for (aarx=0; aarx<n_rx; aarx++) {
        H_re[aatx*n_rx + aarx] = H[aatx*n_rx + aarx][re];
#ifdef DEBUG_MMSE
        if (re == 0)
        printf(" H_re[%d]= (%f + i%f)\n", aatx*n_rx + aarx, creal(H_re[aatx*n_rx + aarx]), cimag(H_re[aatx*n_rx + aarx]));
#endif
      }
    }
    compute_MMSE(H_re, n_tx, noise_power, W_MMSE_re);
    for (aatx=0; aatx<n_tx; aatx++){
      for (aarx=0; aarx<n_rx; aarx++) {
        W_MMSE[aatx*n_rx + aarx][re] = W_MMSE_re[aatx*n_rx + aarx];
        if (fabs(creal(W_MMSE_re[aatx*n_rx + aarx])) > max)
          max = fabs(creal(W_MMSE_re[aatx*n_rx + aarx]));
        if (fabs(cimag(W_MMSE_re[aatx*n_rx + aarx])) > max)
          max = fabs(cimag(W_MMSE_re[aatx*n_rx + aarx]));
      }
    }
  }
  one_over_max = 1.0/max;

  for (re=0; re<length; re++)
    for (aatx=0; aatx<n_tx; aatx++)
      for (aarx=0; aarx<n_rx; aarx++){
#ifdef DEBUG_MMSE
        if (re == 0)
          printf(" W_MMSE[%d] = (%f + i%f)\n", aatx*n_rx + aarx, creal(W_MMSE[aatx*n_rx + aarx][re]), cimag(W_MMSE[aatx*n_rx + aarx][re]));
#endif
        W_MMSE[aatx*n_rx + aarx][re] = one_over_max*W_MMSE[aatx*n_rx + aarx][re];
#ifdef DEBUG_MMSE
        if (re == 0)
          printf(" AFTER NORM W_MMSE[%d] = (%f + i%f), max = %f \n", aatx*n_rx + aarx, creal(W_MMSE[aatx*n_rx + aarx][re]), cimag(W_MMSE[aatx*n_rx + aarx][re]), max);
#endif
      }


  mult_mmse_rxdataF(W_MMSE,
                    rxdataF_ext_flcpx,
                    n_tx,
                    n_rx,
                    length,
                    start_point);

  mult_mmse_chan_est(W_MMSE,
                     H,
                     n_tx,
                     n_rx,
                     length,
                     start_point);

  float_to_rxdataF(rxdataF_ext,
                   rxdataF_ext_flcpx,
                   n_tx,
                   n_rx,
                   length,
                   start_point);

  float_to_chan_est(dl_ch_estimates_ext,
                    H,
                    n_tx,
                    n_rx,
                    length,
                    start_point);
  free(H_re);
  free(W_MMSE);
  free(W_MMSE_re);

}


void dlsch_channel_aver_band(int **dl_ch_estimates_ext,
                             LTE_DL_FRAME_PARMS *frame_parms,
                             struct complex32 *chan_avg,
                             unsigned char symbol,
                             unsigned short nb_rb)
{

#if defined(__x86_64__)||defined(__i386__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  __m128i *dl_ch128, avg128D;
  int32_t chan_est_avg[4];

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
    nre=8;
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
    nre=10;
  else
    nre=12;

  for (aatx=0; aatx<frame_parms->nb_antennas_tx; aatx++){
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];
      avg128D = _mm_setzero_si128();
     //  print_shorts("avg128D 1",&avg128D);

      for (rb=0;rb<nb_rb;rb++) {
        /*  printf("symbol %d, ant %d, nre*nrb %d, rb %d \n", symbol, aatx*frame_parms->nb_antennas_rx + aarx, nb_rb*nre, rb);
          print_shorts("aver dl_ch128",&dl_ch128[0]);
          print_shorts("aver dl_ch128",&dl_ch128[1]);
          print_shorts("aver dl_ch128",&dl_ch128[2]);
        avg128D = _mm_add_epi16(avg128D, dl_ch128[0]);*/
        //print_shorts("avg128D 2",&avg128D);

        avg128D = _mm_add_epi16(avg128D, dl_ch128[1]);
       //  print_shorts("avg128D 3",&avg128D);

        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
          dl_ch128+=2;
        }else {
          avg128D = _mm_add_epi16(avg128D,dl_ch128[2]);
         //  print_shorts("avg128D 4",&avg128D);
          dl_ch128+=3;
        }
      }

      chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].r =(((int16_t*)&avg128D)[0] +
                                                              ((int16_t*)&avg128D)[2] +
                                                              ((int16_t*)&avg128D)[4] +
                                                              ((int16_t*)&avg128D)[6])/(nb_rb*nre);
    //  printf("symb %d chan_avg re [%d] = %d\n", symbol, aatx*frame_parms->nb_antennas_rx + aarx, chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].r);



      chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].i =(((int16_t*)&avg128D)[1] +
                                                            ((int16_t*)&avg128D)[3] +
                                                            ((int16_t*)&avg128D)[5] +
                                                            ((int16_t*)&avg128D)[7])/(nb_rb*nre);
    //  printf("symb %d chan_avg im [%d] = %d\n", symbol, aatx*frame_parms->nb_antennas_rx + aarx, chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].i);

      //printf("symb %d chan_avg im [%d] = %d\n", symbol, aatx*frame_parms->nb_antennas_rx + aarx, chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].i);


      chan_est_avg[aatx*frame_parms->nb_antennas_rx + aarx] = (((int32_t)chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].i)<<16)|(((int32_t)chan_avg[aatx*frame_parms->nb_antennas_rx + aarx].r) & 0xffff);

      //printf("symb %d chan_est_avg [%d] = %d\n", symbol, aatx*frame_parms->nb_antennas_rx + aarx, chan_est_avg[aatx*frame_parms->nb_antennas_rx + aarx]);

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*frame_parms->nb_antennas_rx + aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0;rb<nb_rb;rb++) {
        dl_ch128[0] = _mm_set1_epi32(chan_est_avg[aatx*frame_parms->nb_antennas_rx + aarx]);
        dl_ch128[1] = _mm_set1_epi32(chan_est_avg[aatx*frame_parms->nb_antennas_rx + aarx]);
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
          dl_ch128+=2;
        }else {
        dl_ch128[2] = _mm_set1_epi32(chan_est_avg[aatx*frame_parms->nb_antennas_rx + aarx]);
          dl_ch128+=3;
        }
       }
     }
   }

    _mm_empty();
    _m_empty();

#elif defined(__arm__)
#endif
  }

void rxdataF_to_float(int32_t **rxdataF_ext,
                      float complex **rxdataF_f,
                      int n_rx,
                      int length,
                      int start_point)
{
  short re;
  int aarx;
  int16_t imag;
  int16_t real;

  for (aarx=0; aarx<n_rx; aarx++) {
    for (re=0; re<length; re++){
      imag = (int16_t) (rxdataF_ext[aarx][start_point + re] >> 16);
      real = (int16_t) (rxdataF_ext[aarx][start_point + re] & 0xffff);
      rxdataF_f[aarx][re] = (float)(real/(32768.0)) + I*(float)(imag/(32768.0));
#ifdef DEBUG_MMSE
        if (re==0){
          printf("rxdataF_to_float: aarx = %d, real= %d, imag = %d\n", aarx, real, imag);
          //printf("rxdataF_to_float: rxdataF_ext[%d][%d] = %d\n", aarx, start_point + re, rxdataF_ext[aarx][start_point + re]);
          //printf("rxdataF_to_float: ant %d, re = %d, rxdataF_f real = %f, rxdataF_f imag = %f \n", aarx, re, creal(rxdataF_f[aarx][re]), cimag(rxdataF_f[aarx][re]));
        }
#endif
    }
  }
}



void chan_est_to_float(int32_t **dl_ch_estimates_ext,
                       float complex **dl_ch_estimates_ext_f,
                       int n_tx,
                       int n_rx,
                       int length,
                       int start_point)
{
  short re;
  int aatx,aarx;
  int16_t imag;
  int16_t real;

  for (aatx=0; aatx<n_tx; aatx++){
    for (aarx=0; aarx<n_rx; aarx++) {
      for (re=0; re<length; re++){
        imag = (int16_t) (dl_ch_estimates_ext[aatx*n_rx + aarx][start_point + re] >> 16);
        real = (int16_t) (dl_ch_estimates_ext[aatx*n_rx + aarx][start_point+ re] & 0xffff);
        dl_ch_estimates_ext_f[aatx*n_rx + aarx][re] = (float)(real/(32768.0)) + I*(float)(imag/(32768.0));
#ifdef DEBUG_MMSE
        if (re==0){
          printf("ant %d, re = %d, real = %d, imag = %d \n", aatx*n_rx + aarx, re, real, imag);
          printf("ant %d, re = %d, real = %f, imag = %f \n", aatx*n_rx + aarx, re, creal(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re]), cimag(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re]));
        }
#endif
     }
    }
  }
}

void float_to_chan_est(int32_t **dl_ch_estimates_ext,
                      float complex **dl_ch_estimates_ext_f,
                      int n_tx,
                      int n_rx,
                      int length,
                      int start_point)
{

  short re;
  int aarx, aatx;
  int16_t imag;
  int16_t real;

  for (aatx=0; aatx<n_tx; aatx++){
    for (aarx=0; aarx<n_rx; aarx++) {
      for (re=0; re<length; re++){
        if (cimag(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re])<-1)
           imag = 0x8000;
         else if (cimag(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re])>=1)
           imag = 0x7FFF;
         else
          imag = cimag(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re])*32768;
         if (creal(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re])<-1)
           real = 0x8000;
         else if (creal(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re])>=1)
           real = 0x7FFF;
         else
           real = creal(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re])*32768;

         dl_ch_estimates_ext[aatx*n_rx + aarx][start_point + re] = (((int32_t)imag)<<16)|((int32_t)real & 0xffff);
#ifdef DEBUG_MMSE
        if (re==0){
          printf(" float_to_chan_est: chan est real = %f, chan est imag = %f\n",creal(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re]), cimag(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re]));
          printf("float_to_chan_est: real fixed = %d, imag fixed = %d\n", real, imag);
          printf("float_to_chan_est: ant %d, re = %d, dl_ch_estimates_ext = %d \n", aatx*n_rx + aarx, re,  dl_ch_estimates_ext[aatx*n_rx + aarx][start_point + re]);
        }
#endif
      }
    }
  }
}


void float_to_rxdataF(int32_t **rxdataF_ext,
                      float complex **rxdataF_f,
                      int n_tx,
                      int n_rx,
                      int length,
                      int start_point)
{

  short re;
  int aarx;
  int16_t imag;
  int16_t real;

  for (aarx=0; aarx<n_rx; aarx++) {
    for (re=0; re<length; re++){
      if (cimag(rxdataF_f[aarx][re])<-1)
        imag = 0x8000;
      else if (cimag(rxdataF_f[aarx][re])>=1)
        imag = 0x7FFF;
      else
        imag = cimag(rxdataF_f[aarx][re])*32768;
      if (creal(rxdataF_f[aarx][re])<-1)
        real = 0x8000;
      else if (creal(rxdataF_f[aarx][re])>=1)
        real = 0x7FFF;
      else
        real = creal(rxdataF_f[aarx][re])*32768;
      rxdataF_ext[aarx][start_point + re] = (((int32_t)imag)<<16)|(((int32_t)real) & 0xffff);
#ifdef DEBUG_MMSE
        if (re==0){
          printf(" float_to_rxdataF: real = %f, imag = %f\n",creal(rxdataF_f[aarx][re]), cimag(rxdataF_f[aarx][re]));
          printf("float_to_rxdataF: real fixed = %d, imag fixed = %d\n", real, imag);
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          printf("float_to_rxdataF: ant %d, re = %d, rxdataF_ext = %d \n", aarx, re,  rxdataF_ext[aarx][start_point + re]);
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        }
#endif
      }
    }
}


void mult_mmse_rxdataF(float complex** Wmmse,
                       float complex** rxdataF_ext_f,
                       int n_tx,
                       int n_rx,
                       int length,
                       int start_point)
{
  short re;
  int aarx, aatx;


  float complex* rxdata_re =  malloc(n_rx*sizeof(float complex));
  float complex* rxdata_mmse_re =  malloc(n_rx*sizeof(float complex));
  float complex* Wmmse_re =  malloc(n_tx*n_rx*sizeof(float complex));

  for (re=0;re<length; re++){
    for (aarx=0; aarx<n_rx; aarx++){
      rxdata_re[aarx] = rxdataF_ext_f[aarx][re];
#ifdef DEBUG_MMSE
      if (re==0)
        printf("mult_mmse_rxdataF before: rxdata_re[%d] = (%f, %f)\n", aarx, creal(rxdata_re[aarx]), cimag(rxdata_re[aarx]));
#endif
     }
    for (aatx=0; aatx<n_tx; aatx++){
      for (aarx=0; aarx<n_rx; aarx++){
        Wmmse_re[aatx*n_rx + aarx] = Wmmse[aatx*n_rx + aarx][re];
      }
    }
    mutl_matrix_matrix_col_based(Wmmse_re, rxdata_re, n_rx, n_tx, n_rx, 1, rxdata_mmse_re);

    for (aarx=0; aarx<n_rx; aarx++){
      rxdataF_ext_f[aarx][re] = rxdata_mmse_re[aarx];
#ifdef DEBUG_MMSE
       if (re==0)
        printf("mult_mmse_rxdataF after: rxdataF_ext_f[%d] = (%f, %f)\n", aarx, creal(rxdataF_ext_f[aarx][re]), cimag(rxdataF_ext_f[aarx][re]));
#endif
    }
  }

  free(rxdata_re);
  free(rxdata_mmse_re);
  free(Wmmse_re);
}

void mult_mmse_chan_est(float complex** Wmmse,
                        float complex** dl_ch_estimates_ext_f,
                        int n_tx,
                        int n_rx,
                        int length,
                        int start_point)
{
  short re;
  int aarx, aatx;

  float complex* chan_est_re =  malloc(n_tx*n_rx*sizeof(float complex));
  float complex* chan_est_mmse_re =  malloc(n_tx*n_rx*sizeof(float complex));
  float complex* Wmmse_re =  malloc(n_tx*n_rx*sizeof(float complex));

  for (re=0;re<length; re++){
    for (aatx=0; aatx<n_tx; aatx++){
      for (aarx=0; aarx<n_rx; aarx++){
        chan_est_re[aatx*n_rx + aarx] = dl_ch_estimates_ext_f[aatx*n_rx + aarx][re];
        Wmmse_re[aatx*n_rx + aarx] = Wmmse[aatx*n_rx + aarx][re];
#ifdef DEBUG_MMSE
        if (re==0)
        printf("mult_mmse_chan_est: chan_est_re[%d] = (%f, %f)\n", aatx*n_rx + aarx, creal(chan_est_re[aatx*n_rx + aarx]), cimag(chan_est_re[aatx*n_rx + aarx]));
#endif
      }
    }
      mutl_matrix_matrix_col_based(Wmmse_re, chan_est_re, n_rx, n_tx, n_rx, n_tx, chan_est_mmse_re);
      for (aatx=0; aatx<n_tx; aatx++){
        for (aarx=0; aarx<n_rx; aarx++){
          dl_ch_estimates_ext_f[aatx*n_rx + aarx][re] = chan_est_mmse_re[aatx*n_rx + aarx];
#ifdef DEBUG_MMSE
          if (re==0)
          printf("mult_mmse_chan_est: dl_ch_estimates_ext_f[%d][%d] = (%f, %f)\n", aatx*n_rx + aarx, re, creal(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re]), cimag(dl_ch_estimates_ext_f[aatx*n_rx + aarx][re]));
#endif
        }
      }
   }
   free(Wmmse_re);
   free(chan_est_re);
   free(chan_est_mmse_re);
}




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4627

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//compute average channel_level of effective (precoded) channel
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void dlsch_channel_level_TM34(int **dl_ch_estimates_ext,
                              LTE_DL_FRAME_PARMS *frame_parms,
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                              unsigned char *pmi_ext,
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                              int *avg_0,
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                              int *avg_1,
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                              uint8_t symbol,
                              unsigned short nb_rb,
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                              unsigned int mmse_flag,
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                              MIMO_mode_t mimo_mode){

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#if defined(__x86_64__)||defined(__i386__)
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  short rb;
  unsigned char aarx,nre=12,symbol_mod;
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  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp, avg_0_128D, avg_1_128D;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  //clear average level
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 // avg_0_128D = _mm_setzero_si128();
 // avg_1_128D = _mm_setzero_si128();
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  avg_0[0] = 0;
  avg_0[1] = 0;
  avg_1[0] = 0;
  avg_1[1] = 0;
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  // 5 is always a symbol with no pilots for both normal and extended prefix

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  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
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    nre=8;
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  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
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    nre=10;
  else
    nre=12;

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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
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    avg_0_128D = _mm_setzero_si128();
    avg_1_128D = _mm_setzero_si128();
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    for (rb=0; rb<nb_rb; rb++) {
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              // printf("rb %d : \n",rb);
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    //print_shorts("ch0\n",&dl_ch0_128[0]);
    //print_shorts("ch1\n",&dl_ch1_128[0]);
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      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);

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      if (mmse_flag == 0){
        if (mimo_mode==LARGE_CDD)
          prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
          prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
          prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      }
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      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
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      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
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      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
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      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
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      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
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      if (mmse_flag == 0){
        if (mimo_mode==LARGE_CDD)
          prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
          prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
          prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      }
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      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
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      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
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      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
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      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
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        dl_ch0_128+=2;
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        dl_ch1_128+=2;
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      }
      else {
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        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
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        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);
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        if (mmse_flag == 0){
          if (mimo_mode==LARGE_CDD)
            prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
          else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
            prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
          else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
            prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
          else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
            prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        }
4729
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4730

4731 4732
        avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
        avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4733 4734

        dl_ch0_128+=3;
4735
        dl_ch1_128+=3;
4736
      }
4737
    }
4738 4739


4740 4741 4742 4743 4744
    avg_0[aarx] = (((int*)&avg_0_128D)[0])/(nb_rb*nre) +
      (((int*)&avg_0_128D)[1])/(nb_rb*nre) +
      (((int*)&avg_0_128D)[2])/(nb_rb*nre) +
      (((int*)&avg_0_128D)[3])/(nb_rb*nre);
    //  printf("From Chan_level aver stream 0 %d =%d\n", aarx, avg_0[aarx]);
4745

4746 4747 4748
    avg_1[aarx] = (((int*)&avg_1_128D)[0])/(nb_rb*nre) +
      (((int*)&avg_1_128D)[1])/(nb_rb*nre) +
      (((int*)&avg_1_128D)[2])/(nb_rb*nre) +
4749
      (((int*)&avg_1_128D)[3])/(nb_rb*nre);
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4750
  //    printf("From Chan_level aver stream 1 %d =%d\n", aarx, avg_1[aarx]);
4751
  }
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//avg_0[0] = max(avg_0[0],avg_0[1]);
//avg_1[0] = max(avg_1[0],avg_1[1]);
//avg_0[0]= max(avg_0[0], avg_1[0]);

  avg_0[0] = avg_0[0] + avg_0[1];
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4757
 // printf("From Chan_level aver stream 0 final =%d\n", avg_0[0]);
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4758
  avg_1[0] = avg_1[0] + avg_1[1];
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 // printf("From Chan_level aver stream 1 final =%d\n", avg_1[0]);
 avg_0[0] = min (avg_0[0], avg_1[0]);
 avg_1[0] = avg_0[0];

4763 4764
  _mm_empty();
  _m_empty();
4765

4766
#elif defined(__arm__)
4767

4768
#endif
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}

4771 4772
//compute average channel_level of effective (precoded) channel
void dlsch_channel_level_TM56(int **dl_ch_estimates_ext,
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                              LTE_DL_FRAME_PARMS *frame_parms,
                              unsigned char *pmi_ext,
                              int *avg,
4776
                              uint8_t symbol,
4777 4778
                              unsigned short nb_rb)
{
4779

4780 4781
#if defined(__x86_64__)||defined(__i386__)

4782 4783
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
4784
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;
4785 4786 4787 4788

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  //clear average level
4789
  avg128D = _mm_setzero_si128();
4790 4791 4792 4793
  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

4794
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
4795
    nre=8;
4796
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
4797 4798 4799 4800
    nre=10;
  else
    nre=12;

4801
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4802 4803
    dl_ch0_128 = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128 = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
4804

4805
    for (rb=0; rb<nb_rb; rb++) {
4806

4807 4808
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
4809

4810
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4811
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4812
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4813

4814
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
4815
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
4816

4817
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4818
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4819
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4820

4821
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
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        dl_ch0_128+=2;
        dl_ch1_128+=2;
4824 4825
      }
      else {
4826 4827 4828 4829
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);

        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4830
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
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        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

        dl_ch0_128+=3;
        dl_ch1_128+=3;
4835 4836
      }
    }
4837 4838

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
4839 4840 4841
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
      (((int*)&avg128D)[3])/(nb_rb*nre);
4842
  }
4843

4844 4845 4846 4847 4848
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
4849 4850 4851 4852 4853

#elif defined(__arm__)


#endif
4854
}
4855

4856 4857 4858 4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869 4870 4871
//compute average channel_level for TM7
void dlsch_channel_level_TM7(int **dl_bf_ch_estimates_ext,
                         LTE_DL_FRAME_PARMS *frame_parms,
                         int *avg,
                         uint8_t symbol,
                         unsigned short nb_rb)
{

#if defined(__x86_64__)||defined(__i386__)

  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
  __m128i *dl_ch128,avg128D;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

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4872
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = _mm_setzero_si128();
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(__m128i *)&dl_bf_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[0],dl_ch128[0]));
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[1],dl_ch128[1]));

4886
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918 4919 4920 4921 4922 4923 4924 4925
          dl_ch128+=2;
        } else {
          avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],dl_ch128[2]));
          dl_ch128+=3;
        }

        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
      }

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1))))
        nre=10;
      else if ((frame_parms->Ncp==0) && (symbol==3 || symbol==6 || symbol==9 || symbol==12))
        nre=9;
      else if ((frame_parms->Ncp==1) && (symbol==4 || symbol==7 || symbol==9))
        nre=8;
      else
        nre=12;

      avg[(aatx<<1)+aarx] = (((int*)&avg128D)[0] +
                             ((int*)&avg128D)[1] +
                             ((int*)&avg128D)[2] +
                             ((int*)&avg128D)[3])/(nb_rb*nre);

      //            printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
    }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}
4926
//#define ONE_OVER_2_Q15 16384
4927 4928 4929 4930 4931
void dlsch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
                    int **rxdataF_comp,
                    int **dl_ch_mag,
                    int **dl_ch_magb,
                    unsigned char symbol,
4932 4933
                    unsigned short nb_rb)
{
4934

4935
#if defined(__x86_64__)||defined(__i386__)
4936 4937

  short *rxF0,*rxF1;
4938
  __m128i *ch_mag0,*ch_mag1,*ch_mag0b,*ch_mag1b, *rxF0_128;
4939 4940
  unsigned char rb,re;
  int jj = (symbol*frame_parms->N_RB_DL*12);
4941 4942
  uint8_t symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  uint8_t pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
4943 4944
  rxF0_128 = (__m128i*) &rxdataF_comp[0][jj];

4945
  //amp = _mm_set1_epi16(ONE_OVER_2_Q15);
4946 4947 4948 4949 4950 4951 4952 4953 4954


  //    printf("Doing alamouti!\n");
  rxF0     = (short*)&rxdataF_comp[0][jj];  //tx antenna 0  h0*y
  rxF1     = (short*)&rxdataF_comp[2][jj];  //tx antenna 1  h1*y
  ch_mag0 = (__m128i *)&dl_ch_mag[0][jj];
  ch_mag1 = (__m128i *)&dl_ch_mag[2][jj];
  ch_mag0b = (__m128i *)&dl_ch_magb[0][jj];
  ch_mag1b = (__m128i *)&dl_ch_magb[2][jj];
4955

4956 4957 4958
  for (rb=0; rb<nb_rb; rb++) {

    for (re=0; re<((pilots==0)?12:8); re+=2) {
4959 4960

      // Alamouti RX combining
4961

4962
      //      printf("Alamouti: symbol %d, rb %d, re %d: rxF0 (%d,%d,%d,%d), rxF1 (%d,%d,%d,%d)\n",symbol,rb,re,rxF0[0],rxF0[1],rxF0[2],rxF0[3],rxF1[0],rxF1[1],rxF1[2],rxF1[3]);
4963
      rxF0[0] = rxF0[0] + rxF1[2];
4964
      rxF0[1] = rxF0[1] - rxF1[3];
4965 4966 4967

      rxF0[2] = rxF0[2] - rxF1[0];
      rxF0[3] = rxF0[3] + rxF1[1];
4968

4969
      //      printf("Alamouti: rxF0 after (%d,%d,%d,%d)\n",rxF0[0],rxF0[1],rxF0[2],rxF0[3]);
4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982
      rxF0+=4;
      rxF1+=4;

    }

    // compute levels for 16QAM or 64 QAM llr unit
    ch_mag0[0] = _mm_adds_epi16(ch_mag0[0],ch_mag1[0]);
    ch_mag0[1] = _mm_adds_epi16(ch_mag0[1],ch_mag1[1]);

    ch_mag0b[0] = _mm_adds_epi16(ch_mag0b[0],ch_mag1b[0]);
    ch_mag0b[1] = _mm_adds_epi16(ch_mag0b[1],ch_mag1b[1]);

    // account for 1/sqrt(2) scaling at transmission
4983 4984 4985 4986 4987 4988 4989 4990 4991 4992 4993 4994 4995
    //ch_mag0[0] = _mm_srai_epi16(ch_mag0[0],1);
    //ch_mag0[1] = _mm_srai_epi16(ch_mag0[1],1);
    //ch_mag0b[0] = _mm_srai_epi16(ch_mag0b[0],1);
    //ch_mag0b[1] = _mm_srai_epi16(ch_mag0b[1],1);

    //rxF0_128[0] = _mm_mulhi_epi16(rxF0_128[0],amp);
    //rxF0_128[0] = _mm_slli_epi16(rxF0_128[0],1);
    //rxF0_128[1] = _mm_mulhi_epi16(rxF0_128[1],amp);
    //rxF0_128[1] = _mm_slli_epi16(rxF0_128[1],1);

    //rxF0_128[0] = _mm_srai_epi16(rxF0_128[0],1);
    //rxF0_128[1] = _mm_srai_epi16(rxF0_128[1],1);

4996 4997 4998 4999 5000 5001


    if (pilots==0) {
      ch_mag0[2] = _mm_adds_epi16(ch_mag0[2],ch_mag1[2]);
      ch_mag0b[2] = _mm_adds_epi16(ch_mag0b[2],ch_mag1b[2]);

5002 5003 5004 5005 5006 5007 5008
      //ch_mag0[2] = _mm_srai_epi16(ch_mag0[2],1);
      //ch_mag0b[2] = _mm_srai_epi16(ch_mag0b[2],1);

      //rxF0_128[2] = _mm_mulhi_epi16(rxF0_128[2],amp);
      //rxF0_128[2] = _mm_slli_epi16(rxF0_128[2],1);

      //rxF0_128[2] = _mm_srai_epi16(rxF0_128[2],1);
5009 5010 5011 5012 5013 5014 5015


      ch_mag0+=3;
      ch_mag1+=3;
      ch_mag0b+=3;
      ch_mag1b+=3;
      rxF0_128+=3;
5016
    } else {
5017 5018 5019 5020 5021 5022 5023 5024 5025
      ch_mag0+=2;
      ch_mag1+=2;
      ch_mag0b+=2;
      ch_mag1b+=2;
      rxF0_128+=2;
    }
  }

  _mm_empty();
5026
  _m_empty();
5027

5028
#elif defined(__arm__)
5029

5030
#endif
5031 5032
}

5033

5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045 5046
//==============================================================================================
// Extraction functions
//==============================================================================================

unsigned short dlsch_extract_rbs_single(int **rxdataF,
                                        int **dl_ch_estimates,
                                        int **rxdataF_ext,
                                        int **dl_ch_estimates_ext,
                                        unsigned short pmi,
                                        unsigned char *pmi_ext,
                                        unsigned int *rb_alloc,
                                        unsigned char symbol,
                                        unsigned char subframe,
5047
                                        uint32_t high_speed_flag,
5048 5049 5050 5051 5052 5053 5054 5055 5056 5057 5058 5059 5060 5061 5062 5063
                                        LTE_DL_FRAME_PARMS *frame_parms) {



  unsigned short rb,nb_rb=0;
  unsigned char rb_alloc_ind;
  unsigned char i,aarx,l,nsymb,skip_half=0,sss_symb,pss_symb=0;
  int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;



  unsigned char symbol_mod,pilots=0,j=0,poffset=0;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
  l=symbol;
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5064
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
5065

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5066
  if (frame_parms->frame_type == TDD) {  // TDD
5067 5068
    sss_symb = nsymb-1;
    pss_symb = 2;
5069
  } else {
5070 5071 5072
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }
5073

5074 5075 5076
  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;

5077
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
5078 5079 5080 5081 5082

    if (high_speed_flag == 1)
      dl_ch0     = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
    else
      dl_ch0     = &dl_ch_estimates[aarx][5];
5083

5084 5085 5086 5087
    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

    rxF_ext   = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    rxF       = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
5088

5089
    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
5090

5091
      for (rb=0;rb<frame_parms->N_RB_DL;rb++) {
5092 5093 5094 5095 5096 5097 5098 5099 5100 5101 5102 5103

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

5104
        if (rb_alloc_ind == 1)
5105 5106
          nb_rb++;

5107 5108 5109 5110 5111 5112
        // For second half of RBs skip DC carrier
        if (rb==(frame_parms->N_RB_DL>>1)) {
          rxF       = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
          //dl_ch0++;
        }

5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132 5133 5134 5135 5136 5137
        // PBCH
        if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }


        if (frame_parms->frame_type == FDD) {
          //PSS
          if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            (subframe==6)) { //TDD Subframe 6
          if ((rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

5138 5139 5140 5141 5142
        if (rb_alloc_ind==1) {
          *pmi_ext = (pmi>>((rb>>2)<<1))&3;
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

          /*
5143 5144 5145 5146
            printf("rb %d\n",rb);
            for (i=0;i<12;i++)
            printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
            printf("\n");
5147 5148 5149 5150 5151
          */
          if (pilots==0) {
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
              /*
5152 5153
                printf("%d : (%d,%d)\n",(rxF+i-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))]),
                ((short*)&rxF[i])[0],((short*)&rxF[i])[1]);*/
5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171 5172 5173 5174
            }

            dl_ch0_ext+=12;
            rxF_ext+=12;
          } else {
            j=0;

            for (i=0; i<12; i++) {
              if ((i!=(frame_parms->nushift+poffset)) &&
                  (i!=((frame_parms->nushift+poffset+6)%12))) {
                rxF_ext[j]=rxF[i];
                //            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
                dl_ch0_ext[j++]=dl_ch0[i];

              }
            }

            dl_ch0_ext+=10;
            rxF_ext+=10;
          }

5175

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        }

        dl_ch0+=12;
        rxF+=12;
5180 5181 5182

      }
    else {  // Odd number of RBs
5183
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
5184
#ifdef DEBUG_DLSCH_DEMOD
5185
        printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
5186
#endif
5187 5188 5189 5190 5191 5192 5193 5194 5195 5196 5197 5198 5199
        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

5200 5201
        if (rb_alloc_ind == 1)
          nb_rb++;
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        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (rb>((frame_parms->N_RB_DL>>1)-3)) &&
            (rb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }
        //SSS
        if (((subframe==0)||(subframe==5)) &&
            (rb==((frame_parms->N_RB_DL>>1)-3)) &&
            (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) &&
                 (rb==((frame_parms->N_RB_DL>>1)+3)) &&
                 (l==sss_symb))
          skip_half=2;

        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
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5235

5236
          if (((subframe==0)||(subframe==5)) &&
5237 5238 5239
              (rb>((frame_parms->N_RB_DL>>1)-3)) &&
              (rb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
5240 5241 5242 5243 5244 5245 5246 5247 5248 5249
            rb_alloc_ind = 0;
          }

          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if ((frame_parms->frame_type == TDD) &&
5250
            (subframe==6)){  //TDD Subframe 6
5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }


        if (rb_alloc_ind==1) {
5262

5263
#ifdef DEBUG_DLSCH_DEMOD
5264
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
5265
#endif
5266
          if (pilots==0) {
5267
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5268 5269 5270
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

5271
              for (i=0; i<6; i++) {
5272
                rxF_ext[i]=rxF[i];
5273
#ifdef DEBUG_DLSCH_DEMOD
5274
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5275
#endif
5276
              }
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              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

5282
              for (i=0; i<6; i++) {
5283
                rxF_ext[i]=rxF[(i+6)];
5284
#ifdef DEBUG_DLSCH_DEMOD
5285
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5286
#endif
5287
              }
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              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

5293
              for (i=0; i<12; i++) {
5294
                rxF_ext[i]=rxF[i];
5295 5296 5297
#ifdef DEBUG_DLSCH_DEMOD
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
#endif
5298
              }
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              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
5303
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5304 5305 5306 5307 5308 5309
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
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#ifdef DEBUG_DLSCH_DEMOD
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
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                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
5316
              rxF_ext+=5;
5317 5318 5319 5320 5321
              dl_ch0_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
5322
#ifdef DEBUG_DLSCH_DEMOD
5323
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5324
#endif
5325 5326 5327 5328 5329 5330 5331 5332 5333 5334 5335
                  dl_ch0_ext[j++]=dl_ch0[i+6];
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
5336
#ifdef DEBUG_DLSCH_DEMOD
5337
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5338
#endif
5339 5340 5341 5342 5343 5344 5345 5346 5347 5348 5349 5350
                  dl_ch0_ext[j++]=dl_ch0[i];

                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          }
        }
        dl_ch0+=12;
        rxF+=12;
5351 5352 5353 5354 5355
      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
5356
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
5357
      else if (rb < 64)
5358
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
5359
      else if (rb < 96)
5360
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
5361
      else if (rb < 100)
5362
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
5363
      else
5364
        rb_alloc_ind = 0;
5365

5366

5367
      if (rb_alloc_ind == 1)
5368
        nb_rb++;
5369 5370

      // PBCH
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5371

5372
      if ((subframe==0) &&
5373 5374
          (l>=(nsymb>>1)) &&
          (l<((nsymb>>1) + 4))) {
5375
        rb_alloc_ind = 0;
5376
      }
5377

5378
      //SSS
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5379
      if (((subframe==0)||(subframe==5)) && (l==sss_symb) ) {
5380
        rb_alloc_ind = 0;
5381
      }
5382

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5383
      if (frame_parms->frame_type == FDD) {
5384
        //PSS
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5385
        if (((subframe==0)||(subframe==5)) && (l==pss_symb) ) {
5386 5387
          rb_alloc_ind = 0;
        }
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      }

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5390
      //PSS
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5391
      if ((frame_parms->frame_type == TDD) &&
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5392
          (subframe==6) &&
5393 5394
          (l==pss_symb) ) {
        rb_alloc_ind = 0;
5395
      }
5396

5397 5398

      //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
5399 5400
      //      printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
5401
#ifdef DEBUG_DLSCH_DEMOD
5402
        printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
5403
#endif
5404 5405 5406 5407 5408 5409 5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423 5424 5425
        if (pilots==0) {
          for (i=0; i<6; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[i];
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[(1+i-6)];
          }

          dl_ch0_ext+=12;
          rxF_ext+=12;
        } else { // pilots==1
          j=0;

          for (i=0; i<6; i++) {
            if (i!=((frame_parms->nushift+poffset)%6)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[i];
5426 5427 5428
#ifdef DEBUG_DLSCH_DEMOD
              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
#endif
5429 5430 5431 5432 5433 5434 5435 5436 5437
            }
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (i!=((frame_parms->nushift+6+poffset)%12)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[(1+i-6)];
5438 5439
#ifdef DEBUG_DLSCH_DEMOD
              printf("**extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j-1],*(1+(short*)&rxF_ext[j-1]));
5440
#endif
5441 5442 5443 5444 5445 5446
            }
          }

          dl_ch0_ext+=10;
          rxF_ext+=10;
        } // symbol_mod==0
5447 5448
      } // rballoc==1
      else {
5449
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
5450
      }
5451

5452 5453 5454
      dl_ch0+=12;
      rxF+=7;
      rb++;
5455

5456
      for (;rb<frame_parms->N_RB_DL;rb++) {
5457
        //      printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
5458
        //      printf("rb %d (%p)\n",rb,rxF);
5459 5460 5461 5462 5463 5464 5465 5466 5467 5468 5469 5470 5471
        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

5472 5473
        if (rb_alloc_ind == 1)
          nb_rb++;
5474 5475 5476 5477 5478 5479 5480 5481 5482 5483 5484 5485 5486 5487 5488 5489 5490 5491 5492 5493 5494 5495 5496 5497 5498 5499 5500

        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }
        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }
        //SSS
        if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb))
          skip_half=2;
        if (frame_parms->frame_type == FDD) {
          //PSS
          if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          //PSS
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5502 5503 5504 5505 5506 5507 5508
          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if ((frame_parms->frame_type == TDD) &&
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5509

5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521
            (subframe==6)) { //TDD Subframe 6
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if (rb_alloc_ind==1) {
5522
#ifdef DEBUG_DLSCH_DEMOD
5523
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
5524
#endif
5525
          /*
5526
            printf("rb %d\n",rb);
5527 5528 5529 5530 5531
            for (i=0;i<12;i++)
            printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
            printf("\n");
          */
          if (pilots==0) {
5532
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5533 5534 5535
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

5536
              for (i=0; i<6; i++) {
5537
                rxF_ext[i]=rxF[i];
5538
#ifdef DEBUG_DLSCH_DEMOD
5539
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5540
#endif
5541
              }
5542 5543 5544 5545 5546 5547
              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

5548
              for (i=0; i<6; i++) {
5549
                rxF_ext[i]=rxF[(i+6)];
5550
#ifdef DEBUG_DLSCH_DEMOD
5551
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5552
#endif
5553
              }
5554 5555 5556 5557 5558 5559
              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

5560
              for (i=0; i<12; i++) {
5561
                rxF_ext[i]=rxF[i];
5562
#ifdef DEBUG_DLSCH_DEMOD
5563
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5564
#endif
5565
              }
5566 5567 5568 5569
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
5570
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5571 5572 5573 5574 5575 5576
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
5577
#ifdef DEBUG_DLSCH_DEMOD
5578
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5579
#endif
5580 5581 5582 5583 5584 5585 5586 5587 5588 5589
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
5590
#ifdef DEBUG_DLSCH_DEMOD
5591
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5592
#endif
5593 5594 5595 5596 5597 5598 5599 5600 5601 5602 5603
                  dl_ch0_ext[j++]=dl_ch0[i+6];
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
5604
#ifdef DEBUG_DLSCH_DEMOD
5605
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5606
#endif
5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } // pilots=0
        }

        dl_ch0+=12;
        rxF+=12;
5618 5619 5620
      }
    }
  }
5621

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  return(nb_rb/frame_parms->nb_antennas_rx);
}

unsigned short dlsch_extract_rbs_dual(int **rxdataF,
                                      int **dl_ch_estimates,
                                      int **rxdataF_ext,
                                      int **dl_ch_estimates_ext,
                                      unsigned short pmi,
                                      unsigned char *pmi_ext,
                                      unsigned int *rb_alloc,
                                      unsigned char symbol,
                                      unsigned char subframe,
5635
                                      uint32_t high_speed_flag,
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5636
                                      LTE_DL_FRAME_PARMS *frame_parms,
5637
                                      MIMO_mode_t mimo_mode) {
5638

5639 5640 5641 5642 5643 5644
  int prb,nb_rb=0;
  int prb_off,prb_off2;
  int rb_alloc_ind,skip_half=0,sss_symb,pss_symb=0,nsymb,l;
  int i,aarx;
  int32_t *dl_ch0,*dl_ch0p,*dl_ch0_ext,*dl_ch1,*dl_ch1p,*dl_ch1_ext,*rxF,*rxF_ext;
  int symbol_mod,pilots=0,j=0;
5645 5646 5647 5648 5649 5650 5651
  unsigned char *pmi_loc;

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  //  printf("extract_rbs: symbol_mod %d\n",symbol_mod);

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;
5652

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5653
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
5654 5655
  l=symbol;

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5656
  if (frame_parms->frame_type == TDD) {  // TDD
5657 5658
    sss_symb = nsymb-1;
    pss_symb = 2;
5659
  } else {
5660 5661 5662 5663
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }

5664
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
5665 5666 5667 5668

    if (high_speed_flag==1) {
      dl_ch0     = &dl_ch_estimates[aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
      dl_ch1     = &dl_ch_estimates[2+aarx][5+(symbol*(frame_parms->ofdm_symbol_size))];
5669
    } else {
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      dl_ch0     = &dl_ch_estimates[aarx][5];
      dl_ch1     = &dl_ch_estimates[2+aarx][5];
    }
5673

5674
    pmi_loc = pmi_ext;
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    // pointers to extracted RX signals and channel estimates
    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
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    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    dl_ch1_ext = &dl_ch_estimates_ext[2+aarx][symbol*(frame_parms->N_RB_DL*12)];

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    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
      skip_half=0;
5683

5684
      if (prb < 32)
5685
        rb_alloc_ind = (rb_alloc[0]>>prb) & 1;
5686
      else if (prb < 64)
5687
        rb_alloc_ind = (rb_alloc[1]>>(prb-32)) & 1;
5688
      else if (prb < 96)
5689
        rb_alloc_ind = (rb_alloc[2]>>(prb-64)) & 1;
5690
      else if (prb < 100)
5691
        rb_alloc_ind = (rb_alloc[3]>>(prb-96)) & 1;
5692
      else
5693
        rb_alloc_ind = 0;
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      if (rb_alloc_ind == 1)
          nb_rb++;
5697

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5698 5699 5700

      if ((frame_parms->N_RB_DL&1) == 0) {  // even number of RBs

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        // PBCH
        if ((subframe==0) &&
            (prb>=((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l>=(nsymb>>1)) &&
            (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
        }

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (prb>=((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
        }



        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
          if (((subframe==0)||(subframe==5)) &&
              (prb>=((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
            //    printf("symbol %d / rb %d: skipping PSS REs\n",symbol,prb);
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            (subframe==6)) { //TDD Subframe 6
          if ((prb>=((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if (rb_alloc_ind==1) {              // PRB is allocated



          prb_off      = 12*prb;
          prb_off2     = 1+(12*(prb-(frame_parms->N_RB_DL>>1)));
          dl_ch0p    = dl_ch0+(12*prb);
          dl_ch1p    = dl_ch1+(12*prb);
          if (prb<(frame_parms->N_RB_DL>>1)){
            rxF      = &rxdataF[aarx][prb_off+
                                      frame_parms->first_carrier_offset +
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }
          else {
            rxF      = &rxdataF[aarx][prb_off2+
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }

         /*
         if (mimo_mode <= PUSCH_PRECODING1)
5763
          *pmi_loc = (pmi>>((prb>>2)<<1))&3;
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         else
          *pmi_loc=(pmi>>prb)&1;*/
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5767
         *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
5768
          pmi_loc++;
5769 5770


5771
          if (pilots == 0) {
5772

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            memcpy(dl_ch0_ext,dl_ch0p,12*sizeof(int));
            memcpy(dl_ch1_ext,dl_ch1p,12*sizeof(int));
            memcpy(rxF_ext,rxF,12*sizeof(int));
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            dl_ch0_ext +=12;
            dl_ch1_ext +=12;
            rxF_ext    +=12;
5779
          } else { // pilots==1
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            j=0;
            for (i=0; i<12; i++) {
              if ((i!=frame_parms->nushift) &&
                  (i!=frame_parms->nushift+3) &&
                  (i!=frame_parms->nushift+6) &&
                  (i!=((frame_parms->nushift+9)%12))) {
                rxF_ext[j]=rxF[i];
                //        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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                dl_ch0_ext[j]=dl_ch0p[i];
                dl_ch1_ext[j++]=dl_ch1p[i];
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              }
            }
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            dl_ch0_ext+=8;
            dl_ch1_ext+=8;
            rxF_ext+=8;
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          } // pilots==1

5797
        }
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5798
      } else {  // Odd number of RBs
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5800

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5801
      // PBCH
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        if ((subframe==0) &&
            (prb>((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l>=(nsymb>>1)) &&
            (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
        }

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (prb>((frame_parms->N_RB_DL>>1)-3)) &&
            (prb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
          //    printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
        }



        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
          if (((subframe==0)||(subframe==5)) &&
              (prb>((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
            //    printf("symbol %d / rb %d: skipping PSS REs\n",symbol,prb);
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            ((subframe==1) || (subframe==6))) { //TDD Subframe 1-6
          if ((prb>((frame_parms->N_RB_DL>>1)-3)) &&
              (prb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if (rb_alloc_ind == 1) {
          skip_half=0;

          //Check if we have to drop half a PRB due to PSS/SSS/PBCH
          // skip_half == 0 means full PRB
          // skip_half == 1 means first half is used (leftmost half-PRB from PSS/SSS/PBCH)
          // skip_half == 2 means second half is used (rightmost half-PRB from PSS/SSS/PBCH)
          //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
          if ((subframe==0) &&
              (prb==((frame_parms->N_RB_DL>>1)-3)) &&
              (l>=(nsymb>>1)) &&
              (l<((nsymb>>1) + 4)))
            skip_half=1;
          else if ((subframe==0) &&
                   (prb==((frame_parms->N_RB_DL>>1)+3)) &&
                   (l>=(nsymb>>1)) &&
                   (l<((nsymb>>1) + 4)))
            skip_half=2;

          //SSS
          if (((subframe==0)||(subframe==5)) &&
              (prb==((frame_parms->N_RB_DL>>1)-3)) &&
              (l==sss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) &&
                   (prb==((frame_parms->N_RB_DL>>1)+3)) &&
                   (l==sss_symb))
            skip_half=2;

          //PSS Subframe 0,5
          if (((frame_parms->frame_type == FDD) &&
               (((subframe==0)||(subframe==5)))) ||  //FDD Subframes 0,5
              ((frame_parms->frame_type == TDD) &&
               (((subframe==1) || (subframe==6))))) { //TDD Subframes 1,6

            if ((prb==((frame_parms->N_RB_DL>>1)-3)) &&
                (l==pss_symb))
              skip_half=1;
            else if ((prb==((frame_parms->N_RB_DL>>1)+3)) &&
                     (l==pss_symb))
              skip_half=2;
          }


          prb_off      = 12*prb;
          prb_off2     = 7+(12*(prb-(frame_parms->N_RB_DL>>1)-1));
          dl_ch0p      = dl_ch0+(12*prb);
          dl_ch1p      = dl_ch1+(12*prb);

          if (prb<=(frame_parms->N_RB_DL>>1)){
            rxF      = &rxdataF[aarx][prb_off+
                                      frame_parms->first_carrier_offset +
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }
          else {
            rxF      = &rxdataF[aarx][prb_off2+
                                      (symbol*(frame_parms->ofdm_symbol_size))];
          }
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5901
#ifdef DEBUG_DLSCH_DEMOD
5902
          printf("symbol %d / rb %d: alloc %d skip_half %d (rxF %p, rxF_ext %p) prb_off (%d,%d)\n",symbol,prb,rb_alloc_ind,skip_half,rxF,rxF_ext,prb_off,prb_off2);
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5903
#endif
5904
         /* if (mimo_mode <= PUSCH_PRECODING1)
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5905
           *pmi_loc = (pmi>>((prb>>2)<<1))&3;
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          else
           *pmi_loc=(pmi>>prb)&1;
5908
         // printf("symbol_mod %d (pilots %d) rb %d, sb %d, pmi %d (pmi_loc %p,rxF %p, ch00 %p, ch01 %p, rxF_ext %p dl_ch0_ext %p dl_ch1_ext %p)\n",symbol_mod,pilots,prb,prb>>2,*pmi_loc,pmi_loc,rxF,dl_ch0, dl_ch1, rxF_ext,dl_ch0_ext,dl_ch1_ext);
5909
*/
5910
         *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
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          pmi_loc++;

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          if (prb != (frame_parms->N_RB_DL>>1)) { // This PRB is not around DC
            if (pilots==0) {
              if (skip_half==1) {
                memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
                memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
                memcpy(rxF_ext,rxF,6*sizeof(int32_t));
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5919
#ifdef DEBUG_DLSCH_DEMOD
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                for (i=0;i<6;i++)
                  printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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5922
#endif
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                dl_ch0_ext+=6;
                dl_ch1_ext+=6;
                rxF_ext+=6;
              } else if (skip_half==2) {
                memcpy(dl_ch0_ext,dl_ch0p+6,6*sizeof(int32_t));
                memcpy(dl_ch1_ext,dl_ch1p+6,6*sizeof(int32_t));
                memcpy(rxF_ext,rxF+6,6*sizeof(int32_t));
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5930
#ifdef DEBUG_DLSCH_DEMOD
5931 5932
                for (i=0;i<6;i++)
                  printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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5933
#endif
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                dl_ch0_ext+=6;
                dl_ch1_ext+=6;
                rxF_ext+=6;
              } else {  // skip_half==0
                memcpy(dl_ch0_ext,dl_ch0p,12*sizeof(int32_t));
                memcpy(dl_ch1_ext,dl_ch1p,12*sizeof(int32_t));
                memcpy(rxF_ext,rxF,12*sizeof(int32_t));
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5941
#ifdef DEBUG_DLSCH_DEMOD
5942 5943
                for (i=0;i<12;i++)
                  printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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5944
#endif
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                dl_ch0_ext+=12;
                dl_ch1_ext+=12;
                rxF_ext+=12;
              }
            } else { // pilots=1
              j=0;

              if (skip_half==1) {
                for (i=0; i<6; i++) {
                  if ((i!=frame_parms->nushift) &&
                      (i!=((frame_parms->nushift+3)%6))) {
                    rxF_ext[j]=rxF[i];
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5957
#ifdef DEBUG_DLSCH_DEMOD
5958
                    printf("(pilots,skip1)extract rb %d, re %d (%d)=> (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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5959
#endif
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                    dl_ch0_ext[j]=dl_ch0p[i];
                    dl_ch1_ext[j++]=dl_ch1p[i];
                  }
                }
                dl_ch0_ext+=4;
                dl_ch1_ext+=4;
                rxF_ext+=4;
              } else if (skip_half==2) {
                for (i=0; i<6; i++) {
                  if ((i!=frame_parms->nushift) &&
                      (i!=((frame_parms->nushift+3)%6))) {
                    rxF_ext[j]=rxF[(i+6)];
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5972
#ifdef DEBUG_DLSCH_DEMOD
5973
                    printf("(pilots,skip2)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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5974
#endif
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                    dl_ch0_ext[j]=dl_ch0p[i+6];
                    dl_ch1_ext[j++]=dl_ch1p[i+6];
                  }
                }
                dl_ch0_ext+=4;
                dl_ch1_ext+=4;
                rxF_ext+=4;

              } else { //skip_half==0
                for (i=0; i<12; i++) {
                  if ((i!=frame_parms->nushift) &&
                      (i!=frame_parms->nushift+3) &&
                      (i!=frame_parms->nushift+6) &&
                      (i!=((frame_parms->nushift+9)%12))) {
                    rxF_ext[j]=rxF[i];
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5990
#ifdef DEBUG_DLSCH_DEMOD
5991
                    printf("(pilots)extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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5992
#endif
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                    dl_ch0_ext[j]  =dl_ch0p[i];
                    dl_ch1_ext[j++]=dl_ch1p[i];
                  }
                }
                dl_ch0_ext+=8;
                dl_ch1_ext+=8;
                rxF_ext+=8;
              } //skip_half==0
            } //pilots==1
          } else {       // Do middle RB (around DC)

            if (pilots==0) {
              memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
              memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
              memcpy(rxF_ext,rxF,6*sizeof(int32_t));
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6008
#ifdef DEBUG_DLSCH_DEMOD
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              for (i=0; i<6; i++) {
                printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
              }
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#endif
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              rxF_ext+=6;
              dl_ch0_ext+=6;
              dl_ch1_ext+=6;
              dl_ch0p+=6;
              dl_ch1p+=6;
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6019
              rxF       = &rxdataF[aarx][1+((symbol*(frame_parms->ofdm_symbol_size)))];
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              memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
              memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
              memcpy(rxF_ext,rxF,6*sizeof(int32_t));
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6024
#ifdef DEBUG_DLSCH_DEMOD
6025 6026 6027
              for (i=0; i<6; i++) {
                printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
              }
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6028
#endif
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              rxF_ext+=6;
              dl_ch0_ext+=6;
              dl_ch1_ext+=6;
            } else { // pilots==1
              j=0;

              for (i=0; i<6; i++) {
                if ((i!=frame_parms->nushift) &&
                    (i!=((frame_parms->nushift+3)%6))) {
                  dl_ch0_ext[j]=dl_ch0p[i];
                  dl_ch1_ext[j]=dl_ch1p[i];
                  rxF_ext[j++]=rxF[i];
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6041
#ifdef DEBUG_DLSCH_DEMOD
6042
                  printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
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#endif
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                }
              }
              rxF       = &rxdataF[aarx][1+symbol*(frame_parms->ofdm_symbol_size)];

              for (; i<12; i++) {
                if ((i!=((frame_parms->nushift+6)%12)) &&
                    (i!=((frame_parms->nushift+9)%12))) {
                  dl_ch0_ext[j]=dl_ch0p[i];
                  dl_ch1_ext[j]=dl_ch1p[i];
                  rxF_ext[j++]=rxF[i-6];
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6054
#ifdef DEBUG_DLSCH_DEMOD
6055
                  printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[1+i-6],*(1+(short*)&rxF[1+i-6]));
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6056
#endif
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                }
              }

              dl_ch0_ext+=8;
              dl_ch1_ext+=8;
              rxF_ext+=8;
            } //pilots==1
          }  // if Middle PRB
        } // if odd PRB
6066
      } // if rballoc==1
6067
    } // for prb
6068
  } // for aarx
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  return(nb_rb/frame_parms->nb_antennas_rx);
}

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unsigned short dlsch_extract_rbs_TM7(int **rxdataF,
                                     int **dl_bf_ch_estimates,
                                     int **rxdataF_ext,
                                     int **dl_bf_ch_estimates_ext,
                                     unsigned int *rb_alloc,
                                     unsigned char symbol,
                                     unsigned char subframe,
                                     uint32_t high_speed_flag,
                                     LTE_DL_FRAME_PARMS *frame_parms)
{
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  unsigned short rb,nb_rb=0;
  unsigned char rb_alloc_ind;
  unsigned char i,aarx,l,nsymb,skip_half=0,sss_symb,pss_symb=0;
  int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;
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6088 6089
  unsigned char symbol_mod,pilots=0,uespec_pilots=0,j=0,poffset=0,uespec_poffset=0;
  int8_t uespec_nushift = frame_parms->Nid_cell%3;
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6091 6092 6093 6094
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
  pilots = ((symbol_mod==0)||(symbol_mod==(4-frame_parms->Ncp))) ? 1 : 0;
  l=symbol;
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
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  if (frame_parms->Ncp==0){
    if (symbol==3 || symbol==6 || symbol==9 || symbol==12)
      uespec_pilots = 1;
  } else{
    if (symbol==4 || symbol==7 || symbol==10)
      uespec_pilots = 1;
  }
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  if (frame_parms->frame_type == TDD) {// TDD
    sss_symb = nsymb-1;
    pss_symb = 2;
  } else {
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
6110
  }
6111

6112 6113
  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;
6114

6115 6116
  if ((frame_parms->Ncp==0 && (symbol==6 ||symbol ==12)) || (frame_parms->Ncp==1 && symbol==7))
    uespec_poffset=2;
6117

6118
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
6119

6120 6121 6122 6123 6124 6125 6126 6127 6128
    if (high_speed_flag == 1)
      dl_ch0     = &dl_bf_ch_estimates[aarx][symbol*(frame_parms->ofdm_symbol_size)];
    else
      dl_ch0     = &dl_bf_ch_estimates[aarx][0];

    dl_ch0_ext = &dl_bf_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];

    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    rxF        = &rxdataF[aarx][(frame_parms->first_carrier_offset + (symbol*(frame_parms->ofdm_symbol_size)))];
6129 6130

    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
6131 6132 6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143
      for (rb=0; rb<frame_parms->N_RB_DL; rb++) {

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

6144
  if (rb_alloc_ind == 1)
6145 6146
          nb_rb++;

6147 6148 6149 6150 6151
        // For second half of RBs skip DC carrier
        if (rb==(frame_parms->N_RB_DL>>1)) {
          rxF       = &rxdataF[aarx][(1 + (symbol*(frame_parms->ofdm_symbol_size)))];
          //dl_ch0++;
        }
6152

6153 6154 6155 6156 6157 6158 6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176
        // PBCH
        if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }


        if (frame_parms->frame_type == FDD) {
          //PSS
          if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }

        if ((frame_parms->frame_type == TDD) &&
            (subframe==6)) { //TDD Subframe 6
          if ((rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
        }
6177

6178
        if (rb_alloc_ind==1) {
6179

6180 6181 6182 6183 6184 6185 6186 6187
          /*
              printf("rb %d\n",rb);
              for (i=0;i<12;i++)
              printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
              printf("\n");
          */
          if (pilots==0 && uespec_pilots==0) {
            memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
6188

6189 6190 6191
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
            }
6192

6193 6194 6195 6196
            dl_ch0_ext+=12;
            rxF_ext+=12;
          } else if(pilots==1 && uespec_pilots==0) {
            j=0;
6197 6198 6199 6200 6201 6202 6203 6204 6205 6206 6207 6208 6209 6210

            for (i=0; i<12; i++) {
              if ((i!=(frame_parms->nushift+poffset)) &&
                  (i!=((frame_parms->nushift+poffset+6)%12))) {
                rxF_ext[j]=rxF[i];
                dl_ch0_ext[j++]=dl_ch0[i];
              }
            }

            dl_ch0_ext+=10;
            rxF_ext+=10;

          } else if (pilots==0 && uespec_pilots==1) {
            j=0;
Xiwen JIANG's avatar
Xiwen JIANG committed
6211

6212

6213
      for (i=0; i<12; i++){
6214
              if (frame_parms->Ncp==0){
6215 6216 6217
                if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
      rxF_ext[j] = rxF[i];
                  dl_ch0_ext[j++]=dl_ch0[i];
6218 6219
                }
              } else{
6220 6221
                if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
      rxF_ext[j] = rxF[i];
6222
                  dl_ch0_ext[j++]=dl_ch0[i];
6223
                }
6224
              }
6225 6226 6227

      }

6228
            dl_ch0_ext+=9-frame_parms->Ncp;
6229
            rxF_ext+=9-frame_parms->Ncp;
6230 6231

          } else {
6232
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
6233 6234 6235 6236 6237 6238 6239 6240 6241 6242 6243 6244 6245 6246 6247 6248 6249 6250 6251 6252 6253 6254 6255 6256
            exit(-1);
          }

        }

        dl_ch0+=12;
        rxF+=12;

      }
    else {  // Odd number of RBs
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

6257 6258
        if (rb_alloc_ind == 1)
          nb_rb++;
6259 6260 6261 6262 6263 6264 6265 6266 6267 6268 6269 6270 6271 6272 6273 6274 6275 6276 6277 6278 6279 6280 6281 6282 6283 6284 6285 6286 6287 6288 6289 6290 6291 6292 6293 6294 6295 6296 6297 6298 6299 6300 6301

        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS

        if (((subframe==0)||(subframe==5)) &&
            (rb>((frame_parms->N_RB_DL>>1)-3)) &&
            (rb<((frame_parms->N_RB_DL>>1)+3)) &&
            (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) &&
            (rb==((frame_parms->N_RB_DL>>1)-3)) &&
            (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) &&
                 (rb==((frame_parms->N_RB_DL>>1)+3)) &&
                 (l==sss_symb))
          skip_half=2;

        //PSS in subframe 0/5 if FDD
        if (frame_parms->frame_type == FDD) {  //FDD
          if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

6302
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313 6314
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }


        if (rb_alloc_ind==1) {
6315 6316 6317
#ifdef DEBUG_DLSCH_DEMOD
          printf("rb %d/symbol %d pilots %d, uespec_pilots %d, (skip_half %d)\n",rb,l,pilots,uespec_pilots,skip_half);
#endif
6318 6319

          if (pilots==0 && uespec_pilots==0) {
6320
            //printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
6321 6322 6323 6324

            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

6325
              for (i=0; i<6; i++) {
6326
                rxF_ext[i]=rxF[i];
6327
#ifdef DEBUG_DLSCH_DEMOD
6328
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6329 6330
#endif
              }
6331 6332 6333 6334 6335 6336

              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

6337
              for (i=0; i<6; i++) {
6338
                rxF_ext[i]=rxF[(i+6)];
6339
#ifdef DEBUG_DLSCH_DEMOD
6340
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6341 6342
#endif
              }
6343 6344 6345 6346 6347 6348

              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

6349
              for (i=0; i<12; i++){
6350
                rxF_ext[i]=rxF[i];
6351 6352 6353
#ifdef DEBUG_DLSCH_DEMOD
                printf("extract rb %d, re %d => (%d,%d)\n",symbol,rb,i,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
6354
              }
6355 6356 6357
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
6358
          } else if (pilots==1 && uespec_pilots==0) {
6359 6360 6361 6362 6363 6364 6365 6366
            // printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
                  dl_ch0_ext[j++]=dl_ch0[i];
6367
#ifdef DEBUG_DLSCH_DEMOD
6368
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6369
#endif
6370 6371 6372 6373 6374 6375 6376 6377 6378 6379
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
                  dl_ch0_ext[j++]=dl_ch0[i+6];
6380
#ifdef DEBUG_DLSCH_DEMOD
6381
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6382
#endif
6383 6384 6385 6386 6387 6388 6389 6390 6391 6392
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
6393 6394 6395
#ifdef DEBUG_DLSCH_DEMOD
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413
                  dl_ch0_ext[j++]=dl_ch0[i];

                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } else if(pilots==0 && uespec_pilots==1){
            //printf("Extracting with uespec pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            j=0;

            if (skip_half==1) {
              if (frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6414
#ifdef DEBUG_DLSCH_DEMOD
6415
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6416
#endif
6417 6418 6419 6420 6421 6422 6423
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);

              } else{
                for (i=0; i<6; i++) {
6424
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6425 6426
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6427
#ifdef DEBUG_DLSCH_DEMOD
6428
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6429
#endif
6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else if (skip_half==2) {
              if(frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6442
#ifdef DEBUG_DLSCH_DEMOD
6443
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6444
#endif
6445 6446 6447 6448 6449 6450 6451
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);

              } else {
                for (i=0; i<6; i++) {
6452
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6453 6454
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6455
#ifdef DEBUG_DLSCH_DEMOD
6456
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6457
#endif
6458 6459 6460 6461 6462 6463 6464 6465
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {

6466
        for (i=0; i<12; i++){
6467 6468
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6469 6470
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++] = dl_ch0[i];
6471 6472 6473
#ifdef DEBUG_DLSCH_DEMOD
                    printf("extract rb %d, re %d, j %d => (%d,%d)\n",symbol,rb,i,j-1,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
#endif
6474 6475
                  }
                } else{
6476 6477 6478
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6479
#ifdef DEBUG_DLSCH_DEMOD
6480
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6481
#endif
6482
                  }
6483
                }
6484 6485 6486

        }

6487
              dl_ch0_ext+=9-frame_parms->Ncp;
6488 6489 6490
              rxF_ext+=9-frame_parms->Ncp;
      }

6491
          } else {
6492
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
6493
            exit(-1);
6494

6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514
          }
        }

        dl_ch0+=12;
        rxF+=12;
      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
      else if (rb < 64)
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
      else if (rb < 96)
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
      else if (rb < 100)
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
      else
        rb_alloc_ind = 0;

6515 6516
      if (rb_alloc_ind == 1)
        nb_rb++;
6517 6518 6519 6520 6521 6522 6523 6524 6525 6526 6527 6528 6529 6530 6531 6532 6533 6534

      // PBCH
      if ((subframe==0) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4))) {
        rb_alloc_ind = 0;
      }

      //SSS
      if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
        rb_alloc_ind = 0;
      }

      if (frame_parms->frame_type == FDD) {
        //PSS
        if (((subframe==0)||(subframe==5)) && (rb>=((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
          rb_alloc_ind = 0;
        }
      }

6535
      if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) {
6536 6537 6538 6539 6540 6541 6542 6543 6544 6545 6546 6547 6548 6549
        //PSS
        if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
          rb_alloc_ind = 0;
        }
      }

      //printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
      //printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
        //printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
        if (pilots==0 && uespec_pilots==0) {
          for (i=0; i<6; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[i];
6550
#ifdef DEBUG_DLSCH_DEMOD
6551
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6552
#endif
6553 6554 6555 6556 6557 6558 6559
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[(1+i-6)];
6560
#ifdef DEBUG_DLSCH_DEMOD
6561
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6562
#endif
6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573
          }

          dl_ch0_ext+=12;
          rxF_ext+=12;
        } else if(pilots==1 && uespec_pilots==0){ // pilots==1
          j=0;

          for (i=0; i<6; i++) {
            if (i!=((frame_parms->nushift+poffset)%6)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[i];
6574
#ifdef DEBUG_DLSCH_DEMOD
6575
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6576
#endif
6577 6578 6579 6580 6581 6582 6583 6584 6585
            }
          }

          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (i!=((frame_parms->nushift+6+poffset)%12)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[(1+i-6)];
6586
#ifdef DEBUG_DLSCH_DEMOD
6587
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6588
#endif
6589 6590 6591 6592 6593 6594 6595 6596
            }
          }

          dl_ch0_ext+=10;
          rxF_ext+=10;
        } else if(pilots==0 && uespec_pilots==1) {
          j=0;

6597
    for (i=0; i<6; i++) {
6598
            if (frame_parms->Ncp==0){
6599 6600 6601
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[i];
6602
#ifdef DEBUG_DLSCH_DEMOD
6603
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6604
#endif
6605 6606 6607
              }
            } else {
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6608 6609
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[i];
6610
#ifdef DEBUG_DLSCH_DEMOD
6611
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6612
#endif
6613 6614
              }
            }
6615 6616
    }

6617 6618 6619 6620
          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (frame_parms->Ncp==0){
6621
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6622 6623
                dl_ch0_ext[j]=dl_ch0[i];
                rxF_ext[j++]=rxF[(1+i-6)];
6624
#ifdef DEBUG_DLSCH_DEMOD
6625
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6626
#endif
6627 6628 6629
              }
            } else {
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6630 6631
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[(1+i-6)];
6632
#ifdef DEBUG_DLSCH_DEMOD
6633
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6634
#endif
6635 6636 6637
              }
            }
          }
6638

6639
          dl_ch0_ext+=9-frame_parms->Ncp;
6640 6641 6642
          rxF_ext+=9-frame_parms->Ncp;

  }// symbol_mod==0
6643 6644 6645 6646 6647 6648 6649 6650 6651 6652 6653 6654 6655 6656 6657 6658 6659 6660 6661 6662 6663 6664 6665 6666 6667 6668

      } // rballoc==1
      else {
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
      }

      dl_ch0+=12;
      rxF+=7;
      rb++;

      for (; rb<frame_parms->N_RB_DL; rb++) {
        //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
        //  printf("rb %d (%p)\n",rb,rxF);
        skip_half=0;

        if (rb < 32)
          rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
        else if (rb < 64)
          rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
        else if (rb < 96)
          rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
        else if (rb < 100)
          rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
        else
          rb_alloc_ind = 0;

6669 6670
        if (rb_alloc_ind==1)
          nb_rb++;
6671 6672 6673 6674 6675 6676 6677 6678 6679 6680 6681 6682 6683 6684 6685 6686 6687 6688 6689 6690 6691 6692 6693

        // PBCH
        if ((subframe==0) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l>=nsymb>>1) && (l<((nsymb>>1) + 4))) {
          rb_alloc_ind = 0;
        }

        //PBCH subframe 0, symbols nsymb>>1 ... nsymb>>1 + 3
        if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=1;
        else if ((subframe==0) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l>=(nsymb>>1)) && (l<((nsymb>>1) + 4)))
          skip_half=2;

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb) ) {
          rb_alloc_ind = 0;
        }

        //SSS
        if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==sss_symb))
          skip_half=1;
        else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==sss_symb))
          skip_half=2;

6694
        //PSS
6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705
        if (frame_parms->frame_type == FDD) {
          if (((subframe==0)||(subframe==5)) && (rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if (((subframe==0)||(subframe==5)) && (rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

6706
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }

          if ((rb==((frame_parms->N_RB_DL>>1)-3)) && (l==pss_symb))
            skip_half=1;
          else if ((rb==((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb))
            skip_half=2;
        }

        if (rb_alloc_ind==1) {
6718 6719 6720
#ifdef DEBUG_DLSCH_DEMOD
           printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
6721 6722 6723 6724 6725 6726 6727 6728 6729 6730 6731
          /*
              printf("rb %d\n",rb);
            for (i=0;i<12;i++)
            printf("(%d %d)",((short *)dl_ch0)[i<<1],((short*)dl_ch0)[1+(i<<1)]);
            printf("\n");
          */
          if (pilots==0 && uespec_pilots==0) {
            //printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

6732
              for (i=0; i<6; i++) {
6733
                rxF_ext[i]=rxF[i];
6734
#ifdef DEBUG_DLSCH_DEMOD
6735
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6736 6737
#endif
              }
6738 6739 6740 6741 6742 6743 6744

              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else if (skip_half==2) {
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));

6745
              for (i=0; i<6; i++) {
6746
                rxF_ext[i]=rxF[i+6];
6747
#ifdef DEBUG_DLSCH_DEMOD
6748
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6749 6750
#endif
              }
6751 6752 6753 6754 6755 6756

              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
6757
              //printf("symbol %d, extract rb %d, => (%d,%d)\n",symbol,rb,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
6758

6759
              for (i=0; i<12; i++) {
6760
                rxF_ext[i]=rxF[i];
6761
#ifdef DEBUG_DLSCH_DEMOD
6762
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6763 6764
#endif
              }
6765 6766 6767 6768 6769 6770 6771 6772 6773 6774 6775 6776 6777

              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else if (pilots==1 && uespec_pilots==0){
            //printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
                  dl_ch0_ext[j++]=dl_ch0[i];
6778
#ifdef DEBUG_DLSCH_DEMOD
6779
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6780
#endif
6781 6782 6783 6784 6785 6786 6787 6788 6789 6790
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
                  dl_ch0_ext[j++]=dl_ch0[i+6];
6791
#ifdef DEBUG_DLSCH_DEMOD
6792
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6793
#endif
6794 6795 6796 6797 6798 6799 6800 6801 6802 6803
                }
              }

              dl_ch0_ext+=5;
              rxF_ext+=5;
            } else {
              for (i=0; i<12; i++) {
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
6804 6805 6806
#ifdef DEBUG_DLSCH_DEMOD
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
6807 6808 6809 6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } else if(pilots==0 && uespec_pilots==1) {
            j=0;

            if (skip_half==1) {
              if (frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6823
#ifdef DEBUG_DLSCH_DEMOD
6824
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6825
#endif
6826 6827 6828 6829 6830 6831 6832
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset<6)-(uespec_nushift+uespec_poffset+4<6)-((uespec_nushift+uespec_poffset+8)%12<6);

              } else{
                for (i=0; i<6; i++) {
6833
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6834 6835
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6836
#ifdef DEBUG_DLSCH_DEMOD
6837
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6838
#endif
6839 6840 6841 6842 6843 6844 6845 6846 6847 6848
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else if (skip_half==2) {
              if(frame_parms->Ncp==0){
                for (i=0; i<6; i++) {
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6849
                    rxF_ext[j]=rxF[i+6];
6850
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6851
#ifdef DEBUG_DLSCH_DEMOD
6852
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6853
#endif
6854 6855 6856 6857 6858 6859 6860
                  }
                }
                dl_ch0_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);
                rxF_ext+=6-(uespec_nushift+uespec_poffset>6)-(uespec_nushift+uespec_poffset+4>6)-((uespec_nushift+uespec_poffset+8)%12>6);

              } else {
                for (i=0; i<6; i++) {
6861
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
6862 6863
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6864
#ifdef DEBUG_DLSCH_DEMOD
6865
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6866
#endif
6867 6868 6869 6870 6871 6872 6873
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {
6874
        for (i=0; i<12; i++){
6875 6876
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6877 6878
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6879
#ifdef DEBUG_DLSCH_DEMOD
6880
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6881
#endif
6882 6883
                  }
                } else{
6884 6885 6886
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+3 && i!=uespec_nushift+uespec_poffset+6 && i!=(uespec_nushift+uespec_poffset+9)%12){
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6887
#ifdef DEBUG_DLSCH_DEMOD
6888
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6889
#endif
6890 6891
                  }
                }
6892 6893
        }

6894
              dl_ch0_ext+=9-frame_parms->Ncp;
6895
              rxF_ext+=9-frame_parms->Ncp;
6896 6897

            }
6898

6899 6900 6901 6902 6903 6904 6905 6906 6907 6908 6909 6910 6911 6912 6913 6914 6915
          }// pilots=0
        }

        dl_ch0+=12;
        rxF+=12;
      }
    }
  }

  _mm_empty();
  _m_empty();

  return(nb_rb/frame_parms->nb_antennas_rx);
}

//==============================================================================================

Cedric Roux's avatar
Cedric Roux committed
6916
void dump_dlsch2(PHY_VARS_UE *ue,uint8_t eNB_id,uint8_t subframe,unsigned int *coded_bits_per_codeword,int round,  unsigned char harq_pid)
6917
{
6918
  unsigned int nsymb = (ue->frame_parms.Ncp == 0) ? 14 : 12;
6919
  char fname[32],vname[32];
6920
  int N_RB_DL=ue->frame_parms.N_RB_DL;
6921 6922 6923

  sprintf(fname,"dlsch%d_rxF_r%d_ext0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_ext0",eNB_id,round);
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6924
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);
6925

6926
  if (ue->frame_parms.nb_antennas_rx >1) {
6927 6928
    sprintf(fname,"dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_ext1",eNB_id,round);
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bruno mongazon committed
6929
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
6930 6931 6932 6933
  }

  sprintf(fname,"dlsch%d_ch_r%d_ext00.m",eNB_id,round);
  sprintf(vname,"dl%d_ch_r%d_ext00",eNB_id,round);
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bruno mongazon committed
6934
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
6935

6936
  if (ue->transmission_mode[eNB_id]==7){
6937 6938
    sprintf(fname,"dlsch%d_bf_ch_r%d.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d",eNB_id,round);
bruno mongazon's avatar
bruno mongazon committed
6939 6940
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_bf_ch_estimates[0],512*nsymb,1,1);
    //LOG_M(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_bf_ch_estimates[0],512,1,1);
6941 6942 6943

    sprintf(fname,"dlsch%d_bf_ch_r%d_ext00.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d_ext00",eNB_id,round);
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6944
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_bf_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
6945 6946
  }

6947
  if (ue->frame_parms.nb_antennas_rx == 2) {
6948 6949
    sprintf(fname,"dlsch%d_ch_r%d_ext01.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext01",eNB_id,round);
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bruno mongazon committed
6950
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
6951 6952
  }

6953
  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
6954 6955
    sprintf(fname,"dlsch%d_ch_r%d_ext10.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext10",eNB_id,round);
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6956
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
6957

6958
    if (ue->frame_parms.nb_antennas_rx == 2) {
6959 6960
      sprintf(fname,"dlsch%d_ch_r%d_ext11.m",eNB_id,round);
      sprintf(vname,"dl%d_ch_r%d_ext11",eNB_id,round);
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6961
      LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
6962 6963 6964 6965 6966
    }
  }

  sprintf(fname,"dlsch%d_rxF_r%d_uespec0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_uespec0",eNB_id,round);
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  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_uespec_pilots[0],12*N_RB_DL,1,1);
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  /*
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    LOG_M("dlsch%d_ch_ext01.m","dl01_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
    LOG_M("dlsch%d_ch_ext10.m","dl10_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
    LOG_M("dlsch%d_ch_ext11.m","dl11_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
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  */
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  sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
  sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);
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  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_rho_ext[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
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  sprintf(fname,"dlsch%d_r%d_rho2.m",eNB_id,round);
  sprintf(vname,"dl_rho2_r%d_%d",eNB_id,round);
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  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_rho2_ext[0],12*N_RB_DL*nsymb,1,1);
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  sprintf(fname,"dlsch%d_rxF_r%d_comp0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_comp0",eNB_id,round);
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  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
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  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
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    sprintf(fname,"dlsch%d_rxF_r%d_comp1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_comp1",eNB_id,round);
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    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp1[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
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  }

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  sprintf(fname,"dlsch%d_rxF_r%d_llr.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_llr",eNB_id,round);
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  LOG_M(fname,vname, ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->llr[0],coded_bits_per_codeword[0],1,0);
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  sprintf(fname,"dlsch%d_r%d_mag1.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag1",eNB_id,round);
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  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_mag0[0],12*N_RB_DL*nsymb,1,1);
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  sprintf(fname,"dlsch%d_r%d_mag2.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag2",eNB_id,round);
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  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_magb0[0],12*N_RB_DL*nsymb,1,1);
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  //  printf("log2_maxh = %d\n",ue->pdsch_vars[eNB_id]->log2_maxh);
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}

#ifdef DEBUG_DLSCH_DEMOD
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/*
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void print_bytes(char *s,__m128i *x)
{
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  char *tempb = (char *)x;

  printf("%s  : %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3],tempb[4],tempb[5],tempb[6],tempb[7],
         tempb[8],tempb[9],tempb[10],tempb[11],tempb[12],tempb[13],tempb[14],tempb[15]
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         );
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}

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void print_shorts(char *s,__m128i *x)
{
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  short *tempb = (short *)x;
  printf("%s  : %d,%d,%d,%d,%d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3],tempb[4],tempb[5],tempb[6],tempb[7]);

}

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void print_shorts2(char *s,__m64 *x)
{
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  short *tempb = (short *)x;
  printf("%s  : %d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3]);

}

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void print_ints(char *s,__m128i *x)
{
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  int *tempb = (int *)x;
  printf("%s  : %d,%d,%d,%d\n",s,
         tempb[0],tempb[1],tempb[2],tempb[3]);

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}*/
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#endif