dlsch_demodulation.c 280 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];
      //print_shorts("dl_ch128[0]=",&dl_ch128[0]);*/
      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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1454
  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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    }
1680
  }
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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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1733
      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++) {

    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];
    rxdataF128        = (__m128i *)&rxdataF_ext[aarx][start_point];
    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*n_rx + aarx][start_point];

      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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2207
        //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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2241
        }
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      }

      // MF multiply by conjugated channel
2245
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
2246
      //        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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2253
      //        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);
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      //        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);
2264
      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);

2287
      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],
2325
                                                     (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))) {
2350
    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); }
2352

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    else
      { pilots=1; }
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  }
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2358
  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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    for (rb=0; rb<nb_rb; rb++) {
2383
#ifdef DEBUG_DLSCH_DEMOD
2384
      printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
2385
#endif
2386 2387
      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) {
2390
        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[2],&dl_ch1_128b[2]);
2391
      }
2392

2393
      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);
        }
2428
      }
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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])]
2431
      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)),
2434
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
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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]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

2437
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
2438
      //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])]
2439
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
2440
      //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])]
2441
      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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      //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])]
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2445 2446 2447
      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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2449 2450 2451
      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)),
2452
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
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2454 2455 2456
      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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2459 2460 2461
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2462

2463
      if (pilots==0) {
2464 2465 2466 2467
        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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2469 2470 2471 2472
        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)));
2473 2474


2475 2476 2477
        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2478 2479


2480 2481 2482 2483 2484 2485
        dl_ch0_128+=6;
        dl_ch1_128+=6;
        dl_ch_mag128+=3;
        dl_ch_mag128b+=3;
        rxdataF128+=6;
        rxdataF_comp128+=3;
2486

2487
      } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
2488 2489 2490 2491 2492 2493
        dl_ch0_128+=4;
        dl_ch1_128+=4;
        dl_ch_mag128+=2;
        dl_ch_mag128b+=2;
        rxdataF128+=4;
        rxdataF_comp128+=2;
2494 2495
      }
    }
2496

2497
    Nre = (pilots==0) ? 12 : 8;
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2498

2499

2500
    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2501 2502

                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
2503 2504
    // rx_antennas
  }
2505
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
2506

2507
  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2508
  //     measurements->precoded_cqi_dB[eNB_id][0]);
2509

2510
#endif
2511
  _mm_empty();
2512
  _m_empty();
2513
}
2514

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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,
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                                    int harq_pid,
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                                    int round,
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                                    MIMO_mode_t mimo_mode,
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                                    unsigned short nb_rb,
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                                    unsigned short mmse_flag,
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                                    unsigned char output_shift0,
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                                    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();
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  } 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]);
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          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);

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       // 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]);
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        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
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        mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
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        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);

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       // print_shorts("dl_ch_mag1_128[0]=",&dl_ch_mag1_128[0]);
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        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]);
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          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);

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       // 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]);
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    //  print_ints("re",&mmtmpD0);
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2789 2790 2791 2792 2793
      // 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]);
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           // print_ints("im",&mmtmpD1);
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      // 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);
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      rxdataF_comp0_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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           // print_shorts("rx:",rxdataF128);
           // print_shorts("ch:",dl_ch0_128);
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      //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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      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);
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            // print_shorts("pack:",rxdataF_comp0_128+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)
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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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      // layer 1
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],rxdataF128[0]);
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           //  print_ints("re",&mmtmpD0);
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     // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
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      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);
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             // 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);
2869 2870
             // print_ints("c0",&mmtmpD2);
             // print_ints("c1",&mmtmpD3);
2871
      rxdataF_comp1_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2872 2873 2874
            // print_shorts("rx:",rxdataF128);
            //  print_shorts("ch:",dl_ch1_128);
            // print_shorts("pack:",rxdataF_comp1_128);
2875

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2876
     // multiply by conjugated channel
2877
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[1],rxdataF128[1]);
2878
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
2879
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[1],_MM_SHUFFLE(2,3,0,1));
2880 2881 2882 2883
      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)
2884 2885
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
2888

2889
      rxdataF_comp1_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2890 2891
            //  print_shorts("rx:",rxdataF128+1);
           // print_shorts("ch:",dl_ch1_128+1);
2892
            // print_shorts("pack:",rxdataF_comp1_128+1);
2893

2894
      if (pilots==0) {
2895 2896 2897 2898 2899 2900 2901 2902
        // 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)
2903 2904
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2905 2906 2907 2908
        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);
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        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;
2922 2923
      }
      else {
2924 2925 2926 2927 2928 2929 2930 2931 2932
        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;
2933
      }
2934

2935
    } // rb loop
2936
    Nre = (pilots==0) ? 12 : 8;
2937

2938
    precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2939
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2940

2941
    precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
2942
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2943
  } // rx_antennas
2944

2945 2946
  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);
2947

2948
 // printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2949
     //  measurements->precoded_cqi_dB[eNB_id][0]);
2950

2951
  _mm_empty();
2952
  _m_empty();
2953

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2954
  #elif defined(__arm__)
2955

2956 2957
  unsigned short rb,Nre;
  unsigned char aarx,symbol_mod,pilots=0;
2958
  int precoded_signal_strength0=0,precoded_signal_strength1=0, rx_power_correction;
2959 2960 2961
  int16x4_t *dl_ch0_128,*rxdataF128;
  int16x4_t *dl_ch1_128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
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2963 2964 2965 2966
  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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2968 2969 2970
  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;
2971
  int **dl_ch_mag1            = pdsch_vars->dl_ch_mag1[harq_pid][round];
2972
  int **dl_ch_magb0           = pdsch_vars->dl_ch_magb0;
2973
  int **dl_ch_magb1           = pdsch_vars->dl_ch_magb1[harq_pid][round];
2974
  int **rxdataF_comp0         = pdsch_vars->rxdataF_comp0;
2975
  int **rxdataF_comp1         = pdsch_vars->rxdataF_comp1[harq_pid][round];
2976

2977
  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
2978

2979
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
2980

2981
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
2982
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
2983
      { nb_rb=1+(5*nb_rb/6); }
2984

2985 2986
    else
      { pilots=1; }
2987
  }
2988

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2989
  rx_power_correction=1;
2990

2991
  if (mod_order0 == 4) {
2992 2993
    QAM_amp0_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp0_128b = vmovq_n_s16(0);
2994

2995
  } else if (mod_order0 == 6) {
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    QAM_amp0_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp0_128b = vmovq_n_s16(QAM64_n2);
2998
  }
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3000
  if (mod_order1 == 4) {
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    QAM_amp1_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp1_128b = vmovq_n_s16(0);
3003

3004
  } else if (mod_order1 == 6) {
3005 3006
    QAM_amp1_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp1_128b = vmovq_n_s16(QAM64_n2);
3007
  }
3008

3009
  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
3010

3011
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3012 3013 3014



3015 3016 3017 3018
    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];
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    dl_ch_mag0_128      = (int16x8_t*)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12];
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    dl_ch_mag0_128b     = (int16x8_t*)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];
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    dl_ch_mag1_128      = (int16x8_t*)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];
3022
    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];
3026

3027
    for (rb=0; rb<nb_rb; rb++) {
3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050
      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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3051 3052
        }
      }
3053 3054 3055


      if (mod_order0>2) {
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 3090
        // 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);
        }
3091 3092 3093
      }

      if (mod_order1>2) {
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 3128
        // 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);
        }
3129
      }
3130

3131
      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
3132
      //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])]
3133
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
3134
      //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])]
3135
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
3136
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3137 3138
      //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])]

3139
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
3140
      //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])]
3141
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
3142
      //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])]
3143
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
3144
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3145
      //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])]
3146

3147 3148 3149
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3150

3151 3152 3153
      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)),
3154
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3155

3156 3157 3158
      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)),
3159
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3160

3161 3162 3163
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3164

3165 3166 3167 3168
      // 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)),
3169
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3170
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
3171

3172 3173 3174
      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)),
3175
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3176
      //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])]
3177

3178 3179 3180
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3181

3182 3183 3184
      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)),
3185
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
3186

3187 3188 3189
      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)),
3190
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
3191

3192 3193 3194
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
3195

3196
      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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      }
    }
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3230
    Nre = (pilots==0) ? 12 : 8;
3231

3232 3233
    // rx_antennas
  }
3234 3235


3236
  Nre = (pilots==0) ? 12 : 8;
3237

3238
  precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
3239
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
3240
  precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
3241
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
3242

3243 3244
  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);
3245

3246
#endif
3247
}
3248

3249

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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,
3256 3257 3258
                                   unsigned char output_shift)
{

3259 3260
#if defined(__x86_64__)||defined(__i386__)

3261
  unsigned short rb;
3262
  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
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  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);

3275 3276
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

3277
    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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3279
    if (dl_ch_estimates_ext_i == NULL) // TM3/4
3280
      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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    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];
3285 3286

    for (rb=0; rb<nb_rb; rb++) {
3287 3288
      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
3289
      //      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]);
3295
      //      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);
3299
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
3300
      //      print_ints("im(shift)",&mmtmpD1);
3301 3302
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      //      print_ints("c0",&mmtmpD2);
      //      print_ints("c1",&mmtmpD3);
3305
      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
3306
    // 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);
3320

3321 3322

      if (pilots==0) {
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3323

3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336
        // 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;
      }
3347
    }
3348

3349
  }
3350

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  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}

3359

3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370
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,
3371 3372 3373
                         unsigned char dual_stream_UE)
{

3374 3375
#if defined(__x86_64__)||defined(__i386__)

3376 3377
  unsigned char aatx;
  int i;
3378
  __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,
3379
    *dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;
3380 3381 3382

  if (frame_parms->nb_antennas_rx>1) {

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3383
    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3384 3385 3386 3387 3388 3389 3390

      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];
3391 3392 3393

      // 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++) {
3394 3395 3396
        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));
3397
          //       print_shorts("mrc comp0:",&rxdataF_comp128_0[i]);
3398 3399
        //       print_shorts("mrc mag0:",&dl_ch_mag128_0[i]);
        //       print_shorts("mrc mag0b:",&dl_ch_mag128_0b[i]);
3400
        //      print_shorts("mrc rho1:",&rho128_1[i]);
3401

3402 3403 3404 3405 3406 3407 3408
      }
    }

    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++) {
3409 3410
        //      print_shorts("mrc rho0:",&rho128_0[i]);
        //      print_shorts("mrc rho1:",&rho128_1[i]);
3411
        rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
3412 3413 3414 3415 3416 3417 3418
      }
    }


    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];
3419 3420 3421 3422 3423
      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];
3424
      dl_ch_mag128_i1b     = (__m128i *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];
3425 3426 3427 3428 3429 3430 3431

      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));
3432 3433 3434
      }
    }
  }
3435

3436 3437
  _mm_empty();
  _m_empty();
3438 3439 3440

#elif defined(__arm__)

3441 3442 3443 3444 3445 3446
  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++) {
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 3496

      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]);
      }
    }
  }

3497
#endif
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}

3500
void dlsch_detection_mrc_TM34(LTE_DL_FRAME_PARMS *frame_parms,
3501
                              LTE_UE_PDSCH *pdsch_vars,
3502 3503 3504 3505 3506
                              int harq_pid,
                              int round,
                              unsigned char symbol,
                              unsigned short nb_rb,
                              unsigned char dual_stream_UE) {
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3508
  int i;
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  __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];
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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];
3532 3533

      // MRC on each re of rb, both on MF output and magnitude (for 16QAM/64QAM llr computation)
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 3572
  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));
    }
  }
3573

3574
    if (dual_stream_UE == 1) {
3575

3576 3577 3578 3579
      __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];


3591 3592 3593 3594
      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));
3595
        rho128_i0[i]           = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
3596

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        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();
}

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void dlsch_scale_channel(int **dl_ch_estimates_ext,
                         LTE_DL_FRAME_PARMS *frame_parms,
                         LTE_UE_DLSCH_t **dlsch_ue,
3641
                         uint8_t symbol,
3642 3643
                         unsigned short nb_rb)
{
3644

3645 3646
#if defined(__x86_64__)||defined(__i386__)

3647 3648
  short rb, ch_amp;
  unsigned char aatx,aarx,pilots=0,symbol_mod;
3649 3650
  __m128i *dl_ch128, ch_amp128;

3651 3652 3653
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

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

  // Determine scaling amplitude based the symbol

3662
  ch_amp = ((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
3663

3664
  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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3665
   // printf("Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
3666 3667 3668

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

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3669
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3670
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
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3674
      for (rb=0;rb<nb_rb;rb++) {
3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687

        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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3688

3689 3690
        }
      }
3691 3692
    }
  }
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3694 3695 3696
#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,
3701
                         LTE_DL_FRAME_PARMS *frame_parms,
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3702
                         int32_t *avg,
3703 3704 3705
                         uint8_t symbol,
                         unsigned short nb_rb)
{
3706

3707
#if defined(__x86_64__)||defined(__i386__)
3708
  //printf("symbol = %d\n", symbol);
3709

3710 3711
  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
3712
  __m128i *dl_ch128, avg128D;
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3714 3715
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

3716
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3717
    nre=8;
3718
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3719 3720 3721 3722
    nre=10;
  else
    nre=12;

3723
  //nb_rb*nre = y * 2^x
3724
  int16_t x = factor2(nb_rb*nre);
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3725
  int16_t y = (nb_rb*nre)>>x;
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3726

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3727
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3728
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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       //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);

3732
      avg128D = _mm_setzero_si128();
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      // 5 is always a symbol with no pilots for both normal and extended prefix

3735 3736

      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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      for (rb=0;rb<nb_rb;rb++) {
3739 3740 3741 3742

        //printf("rb %d : ",rb);
        avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
        avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_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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3747
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
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          dl_ch128+=2;
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        }
        else {
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           avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_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;
        }
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          /*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();

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#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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3782
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
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    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]));

3798
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814
          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]);
          }
        */
      }

3815
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
3816
        nre=8;
3817
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
3818 3819 3820 3821
        nre=10;
      else
        nre=12;

3822 3823 3824 3825
      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);
3826

3827
      //printf("Channel level : %d\n",avg[aatx*(frame_parms->nb_antennas_rx-1) + aarx]);
3828
    }
3829
#endif
3830

3831 3832
}

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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;
  int length_mod4;
  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();

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[aatx*n_rx + aarx][start_point];

      length_mod4=length&3;

      if (length_mod4 == 0){

        length2 = length>>2;

        for (ii=0;ii<length2;ii++) {
          avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
          avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));

          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();

3887
 /* FIXME This part needs to be adapted like the one above */
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 3940
#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

}

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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);
          printf("float_to_rxdataF: ant %d, re = %d, rxdataF_ext = %d \n", aarx, re,  rxdataF_ext[aarx][symbol*nb_rb*12 + re]);
        }
#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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4527

4528
//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,
4536
                              unsigned int mmse_flag,
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                              MIMO_mode_t mimo_mode){

4539
#if defined(__x86_64__)||defined(__i386__)
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  short rb;
  unsigned char aarx,nre=12,symbol_mod;
4543
  __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

4556
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
4557
    nre=8;
4558
  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;

4563
  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();
4569
    for (rb=0; rb<nb_rb; rb++) {
4570
              // 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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4587
      //      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));
4591

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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);
      }
4605

4606
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4607
      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4608

4609
      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
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4611
      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);
        }
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        //      mmtmpD2 = _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));
        avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
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        dl_ch0_128+=3;
4635
        dl_ch1_128+=3;
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      }
4637
    }
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    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]);
4645

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    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) +
4649
      (((int*)&avg_1_128D)[3])/(nb_rb*nre);
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  //    printf("From Chan_level aver stream 1 %d =%d\n", aarx, avg_1[aarx]);
4651
  }
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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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4657
 // printf("From Chan_level aver stream 0 final =%d\n", avg_0[0]);
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  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];

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

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//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,
4676
                              uint8_t symbol,
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                              unsigned short nb_rb)
{
4679

4680 4681
#if defined(__x86_64__)||defined(__i386__)

4682 4683
  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,avg128D;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  //clear average level
4689
  avg128D = _mm_setzero_si128();
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  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

4694
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
4695
    nre=8;
4696
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
4697 4698 4699 4700
    nre=10;
  else
    nre=12;

4701
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4702 4703
    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];
4704

4705
    for (rb=0; rb<nb_rb; rb++) {
4706

4707 4708
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
4709

4710
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4711
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4712
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4713

4714
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
4715
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
4716

4717
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
4718
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
4719
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
4720

4721
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
4722 4723
        dl_ch0_128+=2;
        dl_ch1_128+=2;
4724 4725
      }
      else {
4726 4727 4728 4729
        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);
4730
        //      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;
4735 4736
      }
    }
4737 4738

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
4739 4740 4741
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
      (((int*)&avg128D)[3])/(nb_rb*nre);
4742
  }
4743

4744 4745 4746 4747 4748
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
4749 4750 4751 4752 4753

#elif defined(__arm__)


#endif
4754
}
4755

4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771
//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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4772
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
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    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]));

4786
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
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          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
}
4826
//#define ONE_OVER_2_Q15 16384
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void dlsch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
                    int **rxdataF_comp,
                    int **dl_ch_mag,
                    int **dl_ch_magb,
                    unsigned char symbol,
4832 4833
                    unsigned short nb_rb)
{
4834

4835
#if defined(__x86_64__)||defined(__i386__)
4836 4837

  short *rxF0,*rxF1;
4838
  __m128i *ch_mag0,*ch_mag1,*ch_mag0b,*ch_mag1b, *rxF0_128;
4839 4840
  unsigned char rb,re;
  int jj = (symbol*frame_parms->N_RB_DL*12);
4841 4842
  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;
4843 4844
  rxF0_128 = (__m128i*) &rxdataF_comp[0][jj];

4845
  //amp = _mm_set1_epi16(ONE_OVER_2_Q15);
4846 4847 4848 4849 4850 4851 4852 4853 4854


  //    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];
4855

4856 4857 4858
  for (rb=0; rb<nb_rb; rb++) {

    for (re=0; re<((pilots==0)?12:8); re+=2) {
4859 4860

      // Alamouti RX combining
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4862
      //      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]);
4863
      rxF0[0] = rxF0[0] + rxF1[2];
4864
      rxF0[1] = rxF0[1] - rxF1[3];
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      rxF0[2] = rxF0[2] - rxF1[0];
      rxF0[3] = rxF0[3] + rxF1[1];
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4869
      //      printf("Alamouti: rxF0 after (%d,%d,%d,%d)\n",rxF0[0],rxF0[1],rxF0[2],rxF0[3]);
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      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
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    //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);

4896 4897 4898 4899 4900 4901


    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]);

4902 4903 4904 4905 4906 4907 4908
      //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);
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      ch_mag0+=3;
      ch_mag1+=3;
      ch_mag0b+=3;
      ch_mag1b+=3;
      rxF0_128+=3;
4916
    } else {
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      ch_mag0+=2;
      ch_mag1+=2;
      ch_mag0b+=2;
      ch_mag1b+=2;
      rxF0_128+=2;
    }
  }

  _mm_empty();
4926
  _m_empty();
4927

4928
#elif defined(__arm__)
4929

4930
#endif
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}

4933

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//==============================================================================================
// 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,
4947
                                        uint32_t high_speed_flag,
4948 4949 4950 4951 4952 4953 4954 4955 4956 4957 4958 4959 4960 4961 4962 4963
                                        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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4964
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
4965

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4966
  if (frame_parms->frame_type == TDD) {  // TDD
4967 4968
    sss_symb = nsymb-1;
    pss_symb = 2;
4969
  } else {
4970 4971 4972
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }
4973

4974 4975 4976
  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;

4977
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4978 4979 4980 4981 4982

    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];
4983

4984 4985 4986 4987
    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)))];
4988

4989
    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
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4991
      for (rb=0;rb<frame_parms->N_RB_DL;rb++) {
4992 4993 4994 4995 4996 4997 4998 4999 5000 5001 5002 5003

        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;

5004
        if (rb_alloc_ind == 1)
5005 5006
          nb_rb++;

5007 5008 5009 5010 5011 5012
        // 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++;
        }

5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028 5029 5030 5031 5032 5033 5034 5035 5036 5037
        // 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;
          }
        }

5038 5039 5040 5041 5042
        if (rb_alloc_ind==1) {
          *pmi_ext = (pmi>>((rb>>2)<<1))&3;
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

          /*
5043 5044 5045 5046
            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");
5047 5048 5049 5050 5051
          */
          if (pilots==0) {
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
              /*
5052 5053
                printf("%d : (%d,%d)\n",(rxF+i-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))]),
                ((short*)&rxF[i])[0],((short*)&rxF[i])[1]);*/
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            }

            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;
          }

5075

5076 5077 5078 5079
        }

        dl_ch0+=12;
        rxF+=12;
5080 5081 5082

      }
    else {  // Odd number of RBs
5083
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
5084
#ifdef DEBUG_DLSCH_DEMOD
5085
        printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
5086
#endif
5087 5088 5089 5090 5091 5092 5093 5094 5095 5096 5097 5098 5099
        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;

5100 5101
        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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5135

5136
          if (((subframe==0)||(subframe==5)) &&
5137 5138 5139
              (rb>((frame_parms->N_RB_DL>>1)-3)) &&
              (rb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
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            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) &&
5150
            (subframe==6)){  //TDD Subframe 6
5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161
          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) {
5162

5163
#ifdef DEBUG_DLSCH_DEMOD
5164
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
5165
#endif
5166
          if (pilots==0) {
5167
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5168 5169 5170
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

5171
              for (i=0; i<6; i++) {
5172
                rxF_ext[i]=rxF[i];
5173
#ifdef DEBUG_DLSCH_DEMOD
5174
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5175
#endif
5176
              }
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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));

5182
              for (i=0; i<6; i++) {
5183
                rxF_ext[i]=rxF[(i+6)];
5184
#ifdef DEBUG_DLSCH_DEMOD
5185
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5186
#endif
5187
              }
5188 5189 5190 5191 5192
              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

5193
              for (i=0; i<12; i++) {
5194
                rxF_ext[i]=rxF[i];
5195 5196 5197
#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
5198
              }
5199 5200 5201 5202
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
5203
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
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            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];
                }
              }
5216
              rxF_ext+=5;
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              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)];
5222
#ifdef DEBUG_DLSCH_DEMOD
5223
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5224
#endif
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                  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];
5236
#ifdef DEBUG_DLSCH_DEMOD
5237
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5238
#endif
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                  dl_ch0_ext[j++]=dl_ch0[i];

                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          }
        }
        dl_ch0+=12;
        rxF+=12;
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      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
5256
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
5257
      else if (rb < 64)
5258
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
5259
      else if (rb < 96)
5260
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
5261
      else if (rb < 100)
5262
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
5263
      else
5264
        rb_alloc_ind = 0;
5265

5266

5267
      if (rb_alloc_ind == 1)
5268
        nb_rb++;
5269 5270

      // PBCH
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5271

5272
      if ((subframe==0) &&
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          (l>=(nsymb>>1)) &&
          (l<((nsymb>>1) + 4))) {
5275
        rb_alloc_ind = 0;
5276
      }
5277

5278
      //SSS
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5279
      if (((subframe==0)||(subframe==5)) && (l==sss_symb) ) {
5280
        rb_alloc_ind = 0;
5281
      }
5282

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5283
      if (frame_parms->frame_type == FDD) {
5284
        //PSS
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5285
        if (((subframe==0)||(subframe==5)) && (l==pss_symb) ) {
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          rb_alloc_ind = 0;
        }
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      }

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5290
      //PSS
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5291
      if ((frame_parms->frame_type == TDD) &&
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5292
          (subframe==6) &&
5293 5294
          (l==pss_symb) ) {
        rb_alloc_ind = 0;
5295
      }
5296

5297 5298

      //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
5299 5300
      //      printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
5301
#ifdef DEBUG_DLSCH_DEMOD
5302
        printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
5303
#endif
5304 5305 5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319 5320 5321 5322 5323 5324 5325
        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];
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#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
5329 5330 5331 5332 5333 5334 5335 5336 5337
            }
          }

          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)];
5338 5339
#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]));
5340
#endif
5341 5342 5343 5344 5345 5346
            }
          }

          dl_ch0_ext+=10;
          rxF_ext+=10;
        } // symbol_mod==0
5347 5348
      } // rballoc==1
      else {
5349
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
5350
      }
5351

5352 5353 5354
      dl_ch0+=12;
      rxF+=7;
      rb++;
5355

5356
      for (;rb<frame_parms->N_RB_DL;rb++) {
5357
        //      printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
5358
        //      printf("rb %d (%p)\n",rb,rxF);
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        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;

5372 5373
        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;
        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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5402 5403 5404 5405 5406 5407 5408
          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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5409

5410 5411 5412 5413 5414 5415 5416 5417 5418 5419 5420 5421
            (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) {
5422
#ifdef DEBUG_DLSCH_DEMOD
5423
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
5424
#endif
5425
          /*
5426
            printf("rb %d\n",rb);
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            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) {
5432
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5433 5434 5435
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

5436
              for (i=0; i<6; i++) {
5437
                rxF_ext[i]=rxF[i];
5438
#ifdef DEBUG_DLSCH_DEMOD
5439
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5440
#endif
5441
              }
5442 5443 5444 5445 5446 5447
              dl_ch0_ext+=6;
              rxF_ext+=6;

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

5448
              for (i=0; i<6; i++) {
5449
                rxF_ext[i]=rxF[(i+6)];
5450
#ifdef DEBUG_DLSCH_DEMOD
5451
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5452
#endif
5453
              }
5454 5455 5456 5457 5458 5459
              dl_ch0_ext+=6;
              rxF_ext+=6;

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

5460
              for (i=0; i<12; i++) {
5461
                rxF_ext[i]=rxF[i];
5462
#ifdef DEBUG_DLSCH_DEMOD
5463
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5464
#endif
5465
              }
5466 5467 5468 5469
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
5470
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5471 5472 5473 5474 5475 5476
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
5477
#ifdef DEBUG_DLSCH_DEMOD
5478
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5479
#endif
5480 5481 5482 5483 5484 5485 5486 5487 5488 5489
                  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)];
5490
#ifdef DEBUG_DLSCH_DEMOD
5491
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5492
#endif
5493 5494 5495 5496 5497 5498 5499 5500 5501 5502 5503
                  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];
5504
#ifdef DEBUG_DLSCH_DEMOD
5505
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
5506
#endif
5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } // pilots=0
        }

        dl_ch0+=12;
        rxF+=12;
5518 5519 5520
      }
    }
  }
5521

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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,
5535
                                      uint32_t high_speed_flag,
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5536
                                      LTE_DL_FRAME_PARMS *frame_parms,
5537
                                      MIMO_mode_t mimo_mode) {
5538

5539 5540 5541 5542 5543 5544
  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;
5545 5546 5547 5548 5549 5550 5551
  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;
5552

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5553
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
5554 5555
  l=symbol;

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5556
  if (frame_parms->frame_type == TDD) {  // TDD
5557 5558
    sss_symb = nsymb-1;
    pss_symb = 2;
5559
  } else {
5560 5561 5562 5563
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }

5564
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
5565 5566 5567 5568

    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))];
5569
    } else {
5570 5571 5572
      dl_ch0     = &dl_ch_estimates[aarx][5];
      dl_ch1     = &dl_ch_estimates[2+aarx][5];
    }
5573

5574
    pmi_loc = pmi_ext;
5575

5576 5577
    // pointers to extracted RX signals and channel estimates
    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
5578 5579 5580
    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)];

5581 5582
    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
      skip_half=0;
5583

5584
      if (prb < 32)
5585
        rb_alloc_ind = (rb_alloc[0]>>prb) & 1;
5586
      else if (prb < 64)
5587
        rb_alloc_ind = (rb_alloc[1]>>(prb-32)) & 1;
5588
      else if (prb < 96)
5589
        rb_alloc_ind = (rb_alloc[2]>>(prb-64)) & 1;
5590
      else if (prb < 100)
5591
        rb_alloc_ind = (rb_alloc[3]>>(prb-96)) & 1;
5592
      else
5593
        rb_alloc_ind = 0;
5594 5595 5596

      if (rb_alloc_ind == 1)
          nb_rb++;
5597

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5598 5599 5600

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

5601 5602 5603 5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662
        // 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)
5663
          *pmi_loc = (pmi>>((prb>>2)<<1))&3;
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         else
          *pmi_loc=(pmi>>prb)&1;*/
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5667
         *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
5668
          pmi_loc++;
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5671
          if (pilots == 0) {
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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;
5679
          } 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

5697
        }
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5698
      } else {  // Odd number of RBs
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5700

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5701
      // 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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5801
#ifdef DEBUG_DLSCH_DEMOD
5802
          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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5803
#endif
5804
         /* if (mimo_mode <= PUSCH_PRECODING1)
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5805
           *pmi_loc = (pmi>>((prb>>2)<<1))&3;
5806 5807
          else
           *pmi_loc=(pmi>>prb)&1;
5808
         // 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);
5809
*/
5810
         *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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5819
#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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5822
#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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5830
#ifdef DEBUG_DLSCH_DEMOD
5831 5832
                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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5833
#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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5841
#ifdef DEBUG_DLSCH_DEMOD
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                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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5844
#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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5857
#ifdef DEBUG_DLSCH_DEMOD
5858
                    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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5859
#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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5872
#ifdef DEBUG_DLSCH_DEMOD
5873
                    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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#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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5890
#ifdef DEBUG_DLSCH_DEMOD
5891
                    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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5892
#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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5908
#ifdef DEBUG_DLSCH_DEMOD
5909 5910 5911
              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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              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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5924
#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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5928
#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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5941
#ifdef DEBUG_DLSCH_DEMOD
5942
                  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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5943
#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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5954
#ifdef DEBUG_DLSCH_DEMOD
5955
                  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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#endif
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                }
              }

              dl_ch0_ext+=8;
              dl_ch1_ext+=8;
              rxF_ext+=8;
            } //pilots==1
          }  // if Middle PRB
        } // if odd PRB
5966
      } // if rballoc==1
5967
    } // for prb
5968
  } // 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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5988 5989
  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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  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;
6010
  }
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6012 6013
  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;
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6015 6016
  if ((frame_parms->Ncp==0 && (symbol==6 ||symbol ==12)) || (frame_parms->Ncp==1 && symbol==7))
    uespec_poffset=2;
6017

6018
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    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)))];
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    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
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      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;

6044
  if (rb_alloc_ind == 1)
6045 6046
          nb_rb++;

6047 6048 6049 6050 6051
        // 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++;
        }
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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;
        }

        //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;
          }
        }
6077

6078
        if (rb_alloc_ind==1) {
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6080 6081 6082 6083 6084 6085 6086 6087
          /*
              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));
6088

6089 6090 6091
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
            }
6092

6093 6094 6095 6096
            dl_ch0_ext+=12;
            rxF_ext+=12;
          } else if(pilots==1 && uespec_pilots==0) {
            j=0;
6097 6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110

            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
6111

6112

6113
      for (i=0; i<12; i++){
6114
              if (frame_parms->Ncp==0){
6115 6116 6117
                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];
6118 6119
                }
              } else{
6120 6121
                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];
6122
                  dl_ch0_ext[j++]=dl_ch0[i];
6123
                }
6124
              }
6125 6126 6127

      }

6128
            dl_ch0_ext+=9-frame_parms->Ncp;
6129
            rxF_ext+=9-frame_parms->Ncp;
6130 6131

          } else {
6132
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
6133 6134 6135 6136 6137 6138 6139 6140 6141 6142 6143 6144 6145 6146 6147 6148 6149 6150 6151 6152 6153 6154 6155 6156
            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;

6157 6158
        if (rb_alloc_ind == 1)
          nb_rb++;
6159 6160 6161 6162 6163 6164 6165 6166 6167 6168 6169 6170 6171 6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188 6189 6190 6191 6192 6193 6194 6195 6196 6197 6198 6199 6200 6201

        // 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;
        }

6202
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
6203 6204 6205 6206 6207 6208 6209 6210 6211 6212 6213 6214
          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) {
6215 6216 6217
#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
6218 6219

          if (pilots==0 && uespec_pilots==0) {
6220
            //printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
6221 6222 6223 6224

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

6225
              for (i=0; i<6; i++) {
6226
                rxF_ext[i]=rxF[i];
6227
#ifdef DEBUG_DLSCH_DEMOD
6228
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6229 6230
#endif
              }
6231 6232 6233 6234 6235 6236

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

6237
              for (i=0; i<6; i++) {
6238
                rxF_ext[i]=rxF[(i+6)];
6239
#ifdef DEBUG_DLSCH_DEMOD
6240
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6241 6242
#endif
              }
6243 6244 6245 6246 6247 6248

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

6249
              for (i=0; i<12; i++){
6250
                rxF_ext[i]=rxF[i];
6251 6252 6253
#ifdef DEBUG_DLSCH_DEMOD
                printf("extract rb %d, re %d => (%d,%d)\n",symbol,rb,i,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
6254
              }
6255 6256 6257
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
6258
          } else if (pilots==1 && uespec_pilots==0) {
6259 6260 6261 6262 6263 6264 6265 6266
            // 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];
6267
#ifdef DEBUG_DLSCH_DEMOD
6268
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6269
#endif
6270 6271 6272 6273 6274 6275 6276 6277 6278 6279
                }
              }

              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];
6280
#ifdef DEBUG_DLSCH_DEMOD
6281
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6282
#endif
6283 6284 6285 6286 6287 6288 6289 6290 6291 6292
                }
              }

              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];
6293 6294 6295
#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
6296 6297 6298 6299 6300 6301 6302 6303 6304 6305 6306 6307 6308 6309 6310 6311 6312 6313
                  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];
6314
#ifdef DEBUG_DLSCH_DEMOD
6315
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6316
#endif
6317 6318 6319 6320 6321 6322 6323
                  }
                }
                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++) {
6324
                  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){
6325 6326
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[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
#endif
6330 6331 6332 6333 6334 6335 6336 6337 6338 6339 6340 6341
                  }
                }
                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];
6342
#ifdef DEBUG_DLSCH_DEMOD
6343
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6344
#endif
6345 6346 6347 6348 6349 6350 6351
                  }
                }
                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++) {
6352
                  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){
6353 6354
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6355
#ifdef DEBUG_DLSCH_DEMOD
6356
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6357
#endif
6358 6359 6360 6361 6362 6363 6364 6365
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {

6366
        for (i=0; i<12; i++){
6367 6368
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6369 6370
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++] = dl_ch0[i];
6371 6372 6373
#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
6374 6375
                  }
                } else{
6376 6377 6378
                  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];
6379
#ifdef DEBUG_DLSCH_DEMOD
6380
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6381
#endif
6382
                  }
6383
                }
6384 6385 6386

        }

6387
              dl_ch0_ext+=9-frame_parms->Ncp;
6388 6389 6390
              rxF_ext+=9-frame_parms->Ncp;
      }

6391
          } else {
6392
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
6393
            exit(-1);
6394

6395 6396 6397 6398 6399 6400 6401 6402 6403 6404 6405 6406 6407 6408 6409 6410 6411 6412 6413 6414
          }
        }

        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;

6415 6416
      if (rb_alloc_ind == 1)
        nb_rb++;
6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434

      // 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;
        }
      }

6435
      if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) {
6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449
        //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];
6450
#ifdef DEBUG_DLSCH_DEMOD
6451
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6452
#endif
6453 6454 6455 6456 6457 6458 6459
          }

          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)];
6460
#ifdef DEBUG_DLSCH_DEMOD
6461
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6462
#endif
6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473
          }

          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];
6474
#ifdef DEBUG_DLSCH_DEMOD
6475
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6476
#endif
6477 6478 6479 6480 6481 6482 6483 6484 6485
            }
          }

          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)];
6486
#ifdef DEBUG_DLSCH_DEMOD
6487
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6488
#endif
6489 6490 6491 6492 6493 6494 6495 6496
            }
          }

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

6497
    for (i=0; i<6; i++) {
6498
            if (frame_parms->Ncp==0){
6499 6500 6501
              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];
6502
#ifdef DEBUG_DLSCH_DEMOD
6503
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6504
#endif
6505 6506 6507
              }
            } 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){
6508 6509
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[i];
6510
#ifdef DEBUG_DLSCH_DEMOD
6511
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6512
#endif
6513 6514
              }
            }
6515 6516
    }

6517 6518 6519 6520
          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (frame_parms->Ncp==0){
6521
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6522 6523
                dl_ch0_ext[j]=dl_ch0[i];
                rxF_ext[j++]=rxF[(1+i-6)];
6524
#ifdef DEBUG_DLSCH_DEMOD
6525
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6526
#endif
6527 6528 6529
              }
            } 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){
6530 6531
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[(1+i-6)];
6532
#ifdef DEBUG_DLSCH_DEMOD
6533
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6534
#endif
6535 6536 6537
              }
            }
          }
6538

6539
          dl_ch0_ext+=9-frame_parms->Ncp;
6540 6541 6542
          rxF_ext+=9-frame_parms->Ncp;

  }// symbol_mod==0
6543 6544 6545 6546 6547 6548 6549 6550 6551 6552 6553 6554 6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568

      } // 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;

6569 6570
        if (rb_alloc_ind==1)
          nb_rb++;
6571 6572 6573 6574 6575 6576 6577 6578 6579 6580 6581 6582 6583 6584 6585 6586 6587 6588 6589 6590 6591 6592 6593

        // 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;

6594
        //PSS
6595 6596 6597 6598 6599 6600 6601 6602 6603 6604 6605
        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;
        }

6606
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
6607 6608 6609 6610 6611 6612 6613 6614 6615 6616 6617
          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) {
6618 6619 6620
#ifdef DEBUG_DLSCH_DEMOD
           printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
6621 6622 6623 6624 6625 6626 6627 6628 6629 6630 6631
          /*
              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));

6632
              for (i=0; i<6; i++) {
6633
                rxF_ext[i]=rxF[i];
6634
#ifdef DEBUG_DLSCH_DEMOD
6635
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6636 6637
#endif
              }
6638 6639 6640 6641 6642 6643 6644

              dl_ch0_ext+=6;
              rxF_ext+=6;

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

6645
              for (i=0; i<6; i++) {
6646
                rxF_ext[i]=rxF[i+6];
6647
#ifdef DEBUG_DLSCH_DEMOD
6648
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6649 6650
#endif
              }
6651 6652 6653 6654 6655 6656

              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
6657
              //printf("symbol %d, extract rb %d, => (%d,%d)\n",symbol,rb,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
6658

6659
              for (i=0; i<12; i++) {
6660
                rxF_ext[i]=rxF[i];
6661
#ifdef DEBUG_DLSCH_DEMOD
6662
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6663 6664
#endif
              }
6665 6666 6667 6668 6669 6670 6671 6672 6673 6674 6675 6676 6677

              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];
6678
#ifdef DEBUG_DLSCH_DEMOD
6679
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6680
#endif
6681 6682 6683 6684 6685 6686 6687 6688 6689 6690
                }
              }

              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];
6691
#ifdef DEBUG_DLSCH_DEMOD
6692
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6693
#endif
6694 6695 6696 6697 6698 6699 6700 6701 6702 6703
                }
              }

              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];
6704 6705 6706
#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
6707 6708 6709 6710 6711 6712 6713 6714 6715 6716 6717 6718 6719 6720 6721 6722
                  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];
6723
#ifdef DEBUG_DLSCH_DEMOD
6724
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6725
#endif
6726 6727 6728 6729 6730 6731 6732
                  }
                }
                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++) {
6733
                  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){
6734 6735
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6736
#ifdef DEBUG_DLSCH_DEMOD
6737
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6738
#endif
6739 6740 6741 6742 6743 6744 6745 6746 6747 6748
                  }
                }
                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){
6749
                    rxF_ext[j]=rxF[i+6];
6750
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6751
#ifdef DEBUG_DLSCH_DEMOD
6752
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6753
#endif
6754 6755 6756 6757 6758 6759 6760
                  }
                }
                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++) {
6761
                  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){
6762 6763
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
6764
#ifdef DEBUG_DLSCH_DEMOD
6765
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6766
#endif
6767 6768 6769 6770 6771 6772 6773
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {
6774
        for (i=0; i<12; i++){
6775 6776
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
6777 6778
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
6779
#ifdef DEBUG_DLSCH_DEMOD
6780
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6781
#endif
6782 6783
                  }
                } else{
6784 6785 6786
                  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];
6787
#ifdef DEBUG_DLSCH_DEMOD
6788
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
6789
#endif
6790 6791
                  }
                }
6792 6793
        }

6794
              dl_ch0_ext+=9-frame_parms->Ncp;
6795
              rxF_ext+=9-frame_parms->Ncp;
6796 6797

            }
6798

6799 6800 6801 6802 6803 6804 6805 6806 6807 6808 6809 6810 6811 6812 6813 6814 6815
          }// pilots=0
        }

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

  _mm_empty();
  _m_empty();

  return(nb_rb/frame_parms->nb_antennas_rx);
}

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

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Cedric Roux committed
6816
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)
6817
{
6818
  unsigned int nsymb = (ue->frame_parms.Ncp == 0) ? 14 : 12;
6819
  char fname[32],vname[32];
6820
  int N_RB_DL=ue->frame_parms.N_RB_DL;
6821 6822 6823

  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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6824
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);
6825

6826
  if (ue->frame_parms.nb_antennas_rx >1) {
6827 6828
    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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6829
    LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
6830 6831 6832 6833
  }

  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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6834
  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);
6835

6836
  if (ue->transmission_mode[eNB_id]==7){
6837 6838
    sprintf(fname,"dlsch%d_bf_ch_r%d.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d",eNB_id,round);
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6839 6840
    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);
6841 6842 6843

    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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6844
    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);
6845 6846
  }

6847
  if (ue->frame_parms.nb_antennas_rx == 2) {
6848 6849
    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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6850
    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);
6851 6852
  }

6853
  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
6854 6855
    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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6856
    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);
6857

6858
    if (ue->frame_parms.nb_antennas_rx == 2) {
6859 6860
      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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6861
      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);
6862 6863 6864 6865 6866
    }
  }

  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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6867
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_uespec_pilots[0],12*N_RB_DL,1,1);
6868

6869
  /*
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bruno mongazon committed
6870 6871 6872
    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);
6873
  */
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Raymond Knopp committed
6874 6875
  sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
  sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);
6876

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6877
  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);
6878

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lukashov committed
6879 6880
  sprintf(fname,"dlsch%d_r%d_rho2.m",eNB_id,round);
  sprintf(vname,"dl_rho2_r%d_%d",eNB_id,round);
6881

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6882
  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);
6883

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6884 6885
  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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6886
  LOG_M(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
6887
  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
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6888 6889
    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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6890
    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);
6891 6892
  }

Raymond Knopp's avatar
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6893 6894
  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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6895
  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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6896 6897
  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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6898
  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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6899 6900
  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