dlsch_demodulation.c 248 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.h"
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#include "PHY/extern.h"
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#include "SCHED/defs.h"
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#include "defs.h"
#include "extern.h"
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#include "PHY/sse_intrin.h"
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#include "T.h"
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#define NOCYGWIN_STATIC
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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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#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)))
     {
      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,
                                 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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// 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) {
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     write_output("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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 } */
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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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#ifdef DEBUG_PHY
      if (symbol == 5) {
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        write_output("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);
        write_output("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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#endif

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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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                                     pdsch_vars[eNB_id]->log2_maxh0,
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                                     pdsch_vars[eNB_id]->log2_maxh1);
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  /*   if (symbol == 5) {
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     write_output("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
     write_output("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
     write_output("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
     write_output("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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        } */
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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) {
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     write_output("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
     write_output("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
     write_output("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
     write_output("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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        } */
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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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#ifdef DEBUG_PHY
      if (symbol==5) {
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        write_output("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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       write_output("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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#endif
      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
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// MRC
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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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   if (frame_parms->nb_antennas_rx > 1) {
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    if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
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        ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
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         (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING))){  // TM3 or TM4
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      if (frame_parms->nb_antenna_ports_eNB == 2) {
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        dlsch_detection_mrc_TM34(frame_parms,
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                                 pdsch_vars[eNB_id],
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                                 harq_pid,
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                                 dlsch0_harq->round,
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                                 symbol,
                                 nb_rb,
                                 1);
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    /*   if (symbol == 5) {
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     write_output("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
     write_output("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
771
        } */
772
      }
773
    } else {
774
      dlsch_detection_mrc(frame_parms,
775 776 777
                          pdsch_vars[eNB_id]->rxdataF_comp0,
                          pdsch_vars[eNB_id_i]->rxdataF_comp0,
                          pdsch_vars[eNB_id]->rho,
778
                          pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
779 780 781 782
                          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,
785
                          rx_type==rx_IC_single_stream);
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    }
  }
  //  printf("Combining");
  if ((dlsch0_harq->mimo_mode == SISO) ||
      ((dlsch0_harq->mimo_mode >= UNIFORM_PRECODING11) &&
791 792
       (dlsch0_harq->mimo_mode <= PUSCH_PRECODING0)) ||
       (dlsch0_harq->mimo_mode == TM7)) {
793 794
    /*
      dlsch_siso(frame_parms,
795 796
      pdsch_vars[eNB_id]->rxdataF_comp,
      pdsch_vars[eNB_id_i]->rxdataF_comp,
797 798 799 800 801
      symbol,
      nb_rb);
    */
  } else if (dlsch0_harq->mimo_mode == ALAMOUTI) {
    dlsch_alamouti(frame_parms,
802 803 804
                   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);
807
  }
808

809
  //    printf("LLR");
810 811
  if ((dlsch0_harq->mimo_mode == LARGE_CDD) ||
      ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) &&
812
       (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING)))  {
813
    rxdataF_comp_ptr = pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round];
814
    dl_ch_mag_ptr = pdsch_vars[eNB_id]->dl_ch_mag1[harq_pid][round];
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  }
  else {
817 818
    rxdataF_comp_ptr = pdsch_vars[eNB_id_i]->rxdataF_comp0;
    dl_ch_mag_ptr = pdsch_vars[eNB_id_i]->dl_ch_mag0;
819
    //i_mod should have been passed as a parameter
820
  }
821

822
#if UE_TIMING_TRACE
823
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
824
#if DISABLE_LOG_X
825
    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));
826
#else
827
    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));
828 829 830 831
#endif
#endif

#if UE_TIMING_TRACE
832
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[subframe]][slot]);
833
#endif
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834
  //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);
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  // 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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845

846 847
  LOG_I(PHY,"compute LLRs [AbsSubframe %d.%d-%d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d @LLR Buff %x @LLR Buff(symb) %x\n",
             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],
852
             pllr_symbol_cw0);
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853

854
  switch (dlsch0_harq->Qm) {
855
  case 2 :
856
    if ((rx_type==rx_standard) || (codeword_TB1 == -1)) {
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859
        dlsch_qpsk_llr(frame_parms,
860
                       pdsch_vars[eNB_id]->rxdataF_comp0,
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                       (int16_t*)pllr_symbol_cw0,
862 863 864
                       symbol,
                       first_symbol_flag,
                       nb_rb,
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                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
866
                       beamforming_mode);
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    } 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,
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                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
877
                       beamforming_mode);
878
    }
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      else if (rx_type >= rx_IC_single_stream) {
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880
        if (dlsch1_harq->Qm == 2) {
881
          dlsch_qpsk_qpsk_llr(frame_parms,
882
                              pdsch_vars[eNB_id]->rxdataF_comp0,
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                              rxdataF_comp_ptr,
884 885
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
886
                              symbol,first_symbol_flag,nb_rb,
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                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
888
                              pdsch_vars[eNB_id]->llr128);
889 890 891
          if (rx_type==rx_IC_dual_stream) {
            dlsch_qpsk_qpsk_llr(frame_parms,
                                rxdataF_comp_ptr,
892 893 894
                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
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                                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);
898 899
          }
        }
900
        else if (dlsch1_harq->Qm == 4) {
901
          dlsch_qpsk_16qam_llr(frame_parms,
902
                               pdsch_vars[eNB_id]->rxdataF_comp0,
903 904
                               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],
907
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
909
                               pdsch_vars[eNB_id]->llr128);
910 911 912
          if (rx_type==rx_IC_dual_stream) {
            dlsch_16qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
913
                                 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_rho_ext[harq_pid][round],
                                 pdsch_vars[eNB_id]->llr[1],
917
                                 symbol,first_symbol_flag,nb_rb,
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918
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
919
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
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          }
        }
        else {
          dlsch_qpsk_64qam_llr(frame_parms,
924
                               pdsch_vars[eNB_id]->rxdataF_comp0,
925 926
                               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],
929
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
931
                               pdsch_vars[eNB_id]->llr128);
932 933 934
          if (rx_type==rx_IC_dual_stream) {
            dlsch_64qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
935
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
936
                                 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],
939
                                 symbol,first_symbol_flag,nb_rb,
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                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
941
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
942
          }
943
        }
944
      }
945 946
    break;
  case 4 :
947
    if ((rx_type==rx_standard ) || (codeword_TB1 == -1)) {
948
      dlsch_16qam_llr(frame_parms,
949 950 951
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
952
                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
954 955
                      pdsch_vars[eNB_id]->llr128,
                      beamforming_mode);
956 957 958 959 960 961 962 963 964
    } 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);
965
    }
966
    else if (rx_type >= rx_IC_single_stream) {
967
      if (dlsch1_harq->Qm == 2) {
968
        dlsch_16qam_qpsk_llr(frame_parms,
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                             pdsch_vars[eNB_id]->rxdataF_comp0,
970
                             rxdataF_comp_ptr,//i
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                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
973
                             pdsch_vars[eNB_id]->llr[0],
974
                             symbol,first_symbol_flag,nb_rb,
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                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
976
                             pdsch_vars[eNB_id]->llr128);
977 978 979
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_16qam_llr(frame_parms,
                               rxdataF_comp_ptr,
980 981 982 983
                               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],
984
                               symbol,first_symbol_flag,nb_rb,
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985
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
986
                               pdsch_vars[eNB_id]->llr128_2ndstream);
987
        }
988
      }
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989
      else if (dlsch1_harq->Qm == 4) {
990
        dlsch_16qam_16qam_llr(frame_parms,
991
                              pdsch_vars[eNB_id]->rxdataF_comp0,
992
                              rxdataF_comp_ptr,//i
993
                              pdsch_vars[eNB_id]->dl_ch_mag0,
994
                              dl_ch_mag_ptr,//i
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                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
997 998
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
999
                              pdsch_vars[eNB_id]->llr128);
1000 1001 1002
        if (rx_type==rx_IC_dual_stream) {
          dlsch_16qam_16qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1003
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1004
                                dl_ch_mag_ptr,
1005 1006 1007
                                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],
1008 1009
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
1010
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1011
        }
1012 1013
      }
      else {
1014
        dlsch_16qam_64qam_llr(frame_parms,
1015
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1016
                              rxdataF_comp_ptr,//i
1017
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1018
                              dl_ch_mag_ptr,//i
1019 1020
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1021 1022
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,subframe,symbol),
1023
                              pdsch_vars[eNB_id]->llr128);
1024 1025 1026
        if (rx_type==rx_IC_dual_stream) {
          dlsch_64qam_16qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1027
                                pdsch_vars[eNB_id]->rxdataF_comp0,
1028
                                dl_ch_mag_ptr,
1029 1030 1031
                                pdsch_vars[eNB_id]->dl_ch_mag0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                pdsch_vars[eNB_id]->llr[1],
1032 1033
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
1034
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1035
        }
1036 1037 1038 1039
      }
    }
    break;
  case 6 :
1040
    if ((rx_type==rx_standard) || (codeword_TB1 == -1))  {
1041
      dlsch_64qam_llr(frame_parms,
1042
                      pdsch_vars[eNB_id]->rxdataF_comp0,
1043
                      (int16_t*)pllr_symbol_cw0,
1044 1045
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
1046
                      symbol,first_symbol_flag,nb_rb,
1047
                      adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1048
                      pdsch_vars[eNB_id]->llr_offset[symbol],
1049
                      beamforming_mode);
1050 1051 1052
    } else if (codeword_TB0 == -1){
      dlsch_64qam_llr(frame_parms,
                      pdsch_vars[eNB_id]->rxdataF_comp0,
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1053
                      (int16_t*)pllr_symbol_cw1,
1054 1055 1056 1057
                      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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1058
                      pdsch_vars[eNB_id]->llr_offset[symbol],
1059
                      beamforming_mode);
1060
    }
1061
    else if (rx_type >= rx_IC_single_stream) {
1062
      if (dlsch1_harq->Qm == 2) {
1063
        dlsch_64qam_qpsk_llr(frame_parms,
1064
                             pdsch_vars[eNB_id]->rxdataF_comp0,
1065
                             rxdataF_comp_ptr,//i
1066 1067
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
1068
                             pdsch_vars[eNB_id]->llr[0],
1069
                             symbol,first_symbol_flag,nb_rb,
1070
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1071
                             pdsch_vars[eNB_id]->llr128);
1072 1073 1074
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_64qam_llr(frame_parms,
                               rxdataF_comp_ptr,
1075 1076 1077 1078
                               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],
1079 1080
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,subframe,symbol),
1081
                               pdsch_vars[eNB_id]->llr128_2ndstream);
1082
        }
1083
      }
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1084
      else if (dlsch1_harq->Qm == 4) {
1085
        dlsch_64qam_16qam_llr(frame_parms,
1086
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1087
                              rxdataF_comp_ptr,//i
1088
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1089
                              dl_ch_mag_ptr,//i
1090 1091
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                              pdsch_vars[eNB_id]->llr[0],
1092 1093
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1094
                              pdsch_vars[eNB_id]->llr128);
1095 1096 1097
        if (rx_type==rx_IC_dual_stream) {
          dlsch_16qam_64qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1098
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1099
                                dl_ch_mag_ptr,
1100 1101 1102
                                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],
1103 1104
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
1105
                                pdsch_vars[eNB_id]->llr128_2ndstream);
1106
        }
1107
      }
1108
      else {
1109
        dlsch_64qam_64qam_llr(frame_parms,
1110
                              pdsch_vars[eNB_id]->rxdataF_comp0,
1111
                              rxdataF_comp_ptr,//i
1112
                              pdsch_vars[eNB_id]->dl_ch_mag0,
1113
                              dl_ch_mag_ptr,//i
1114
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
1115
                              (int16_t*)pllr_symbol_cw0,
1116 1117
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,subframe,symbol),
1118
                              pdsch_vars[eNB_id]->llr_offset[symbol]);
1119 1120 1121
        if (rx_type==rx_IC_dual_stream) {
          dlsch_64qam_64qam_llr(frame_parms,
                                rxdataF_comp_ptr,
1122
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
1123
                                dl_ch_mag_ptr,
1124 1125
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
1126
                                (int16_t*)pllr_symbol_cw1,
1127 1128
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
1129
                                pdsch_vars[eNB_id]->llr_offset[symbol]);
1130
        }
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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_I(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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      write_output("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);
      //write_output("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);
      write_output("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);
      //write_output("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);
      //write_output("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);
      //write_output("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);
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      //write_output("rxdataF_ext00.m"    , "rxdataF_ext00",       &pdsch_vars[eNB_id]->rxdataF_ext[0][0],14*frame_parms->N_RB_DL*12,1,1);
      //write_output("rxdataF_ext01.m"    , "rxdataF_ext01",       &pdsch_vars[eNB_id]->rxdataF_ext[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //write_output("rxdataF_ext10.m"    , "rxdataF_ext10",       &pdsch_vars[eNB_id]->rxdataF_ext[2][0],14*frame_parms->N_RB_DL*12,1,1);
      //write_output("rxdataF_ext11.m"    , "rxdataF_ext11",       &pdsch_vars[eNB_id]->rxdataF_ext[3][0],14*frame_parms->N_RB_DL*12,1,1);
      write_output("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);
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      //write_output("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);
      //write_output("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);
      //write_output("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);
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      write_output("rxdataF_comp00.m","rxdataF_comp00",              &pdsch_vars[eNB_id]->rxdataF_comp0[0][0],14*frame_parms->N_RB_DL*12,1,1);
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      //write_output("rxdataF_comp01.m","rxdataF_comp01",              &pdsch_vars[eNB_id]->rxdataF_comp0[1][0],14*frame_parms->N_RB_DL*12,1,1);
      //write_output("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);
      //write_output("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
      write_output("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);
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      //write_output("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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    //    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_ch128          = (__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (__m128i *)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (__m128i *)&dl_ch_magb[(aatx<<1)+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[(aatx<<1)+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]);
        //  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,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);
          //        print_shorts("pack:",rxdataF_comp128+2);

          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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1424
  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};
1522
  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
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1524
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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1526
  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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  }
1534

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1535
  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++) {
      dl_ch128          = (int16x4_t*)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (int16x8_t*)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (int16x8_t*)&dl_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF128        = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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      rxdataF_comp128   = (int16x4x2_t*)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
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1552
      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;
  }
1648
      }
1649
    }
1650
  }
1651

1652 1653
  if (rho) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
1654
      rho128        = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
1655 1656 1657
      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;
1701
      }
1702

1703
      if (first_symbol_flag==1) {
1704
  measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
1705
      }
1706
    }
1707
  }
1708
#endif
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}

1711 1712
#if defined(__x86_64__) || defined(__i386__)

1713 1714
void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1)
{
1715 1716 1717 1718 1719

  __m128i amp;
  amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);

  switch (pmi) {
1720

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  case 0 :   // +1 +1
    //    print_shorts("phase 0 :ch0",ch0);
    //    print_shorts("phase 0 :ch1",ch1);
1724
    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);
1725
    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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1740
    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();
}
1756
#elif defined(__arm__)
1757
void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1) {
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1759 1760
  // sqrt(2) is already taken into account in computation sqrt_rho_a, sqrt_rho_b,
  //so removed it
1761

1762 1763
  //__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);
1770
    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);
1775
    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);
1839 1840 1841

  //  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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1855
 // 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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1891 1892
  _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)
{

1913 1914
#if defined(__x86_64__) || defined(__i386__)

1915
  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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1958

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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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        //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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2013
        }
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      }

      // MF multiply by conjugated channel
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      mmtmpD0 = _mm_madd_epi16(dl_ch0_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)
      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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2025
      //        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);
2035
      //        print_ints("c1",&mmtmpD3);
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      rxdataF_comp128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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      //        print_shorts("rx:",rxdataF128);
      //        print_shorts("ch:",dl_ch128);
      //        print_shorts("pack:",rxdataF_comp128);
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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2054
      rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
2055 2056 2057 2058
      //  print_shorts("rx:",rxdataF128+1);
      //  print_shorts("ch:",dl_ch128+1);
      //  print_shorts("pack:",rxdataF_comp128+1);

2059
      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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      }
    }
2093

2094
    Nre = (pilots==0) ? 12 : 8;
2095

2096
    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2097
                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
2098
  } // rx_antennas
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2100
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
2101

2102
  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2103
  //   measurements->precoded_cqi_dB[eNB_id][0]);
2104 2105 2106

#elif defined(__arm__)

2107 2108
  uint32_t rb,Nre;
  uint32_t aarx,symbol_mod,pilots=0;
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2110 2111 2112 2113 2114
  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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2116
  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
2117 2118
  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
  int32_t precoded_signal_strength=0;
2119 2120

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
2121
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
2122
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
2123
      { nb_rb=1+(5*nb_rb/6); }
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2125 2126
    else
      { pilots=1; }
2127
  }
2128 2129


2130
  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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2134
  } else if (mod_order == 6) {
2135 2136
    QAM_amp128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp128b = vmovq_n_s16(QAM64_n2);
2137
  }
2138

2139
  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
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2141
  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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2154
    for (rb=0; rb<nb_rb; rb++) {
2155
#ifdef DEBUG_DLSCH_DEMOD
2156
      printf("mode 6 prec: rb %d, pmi->%d\n",rb,pmi_ext[rb]);
2157
#endif
2158 2159
      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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2161
      if (pilots==0) {
2162
        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[2],&dl_ch1_128b[2]);
2163
      }
2164

2165
      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);
        }
2200
      }
2201
      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
2202
      //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])]
2203
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
2204
      //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])]
2205
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
2206
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2207 2208
      //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])]

2209
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
2210
      //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])]
2211
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
2212
      //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])]
2213
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
2214
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2215
      //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])]
2216

2217 2218 2219
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2220

2221 2222 2223
      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)),
2224
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2225

2226 2227 2228
      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)),
2229
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2230

2231 2232 2233
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2234

2235
      if (pilots==0) {
2236 2237 2238 2239
        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)));
2240

2241 2242 2243 2244
        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)));
2245 2246


2247 2248 2249
        mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
        mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
        rxdataF_comp128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2250 2251


2252 2253 2254 2255 2256 2257
        dl_ch0_128+=6;
        dl_ch1_128+=6;
        dl_ch_mag128+=3;
        dl_ch_mag128b+=3;
        rxdataF128+=6;
        rxdataF_comp128+=3;
2258

2259
      } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
2260 2261 2262 2263 2264 2265
        dl_ch0_128+=4;
        dl_ch1_128+=4;
        dl_ch_mag128+=2;
        dl_ch_mag128b+=2;
        rxdataF128+=4;
        rxdataF_comp128+=2;
2266 2267
      }
    }
2268

2269
    Nre = (pilots==0) ? 12 : 8;
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2270

2271

2272
    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2273 2274

                                                     (nb_rb*Nre))) - (measurements->n0_power[aarx]));
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    // rx_antennas
  }
2277
  measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,measurements->n0_power_tot);
2278

2279
  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2280
  //     measurements->precoded_cqi_dB[eNB_id][0]);
2281

2282
#endif
2283
  _mm_empty();
2284
  _m_empty();
2285
}
2286

2287
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,
2294
                                    int harq_pid,
2295
                                    int round,
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                                    MIMO_mode_t mimo_mode,
2297
                                    unsigned short nb_rb,
2298
                                    unsigned char output_shift0,
2299
                                    unsigned char output_shift1) {
2300

2301 2302
#if defined(__x86_64__) || defined(__i386__)

2303 2304 2305
  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;
2306
  int precoded_signal_strength0=0,precoded_signal_strength1=0;
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2307
  int rx_power_correction;
2308

2309 2310 2311
  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];
2313
  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;

2320
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
2321

2322 2323 2324 2325
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

  rx_power_correction = 1;
2326

2327
 // printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);
2328 2329 2330

  if (mod_order0 == 4) {
    QAM_amp0_128  = _mm_set1_epi16(QAM16_n1);
2331
    QAM_amp0_128b = _mm_setzero_si128();
2332
  } else if (mod_order0 == 6) {
2333 2334 2335
    QAM_amp0_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp0_128b = _mm_set1_epi16(QAM64_n2);
  }
2336

2337 2338
  if (mod_order1 == 4) {
    QAM_amp1_128  = _mm_set1_epi16(QAM16_n1);
2339
    QAM_amp1_128b = _mm_setzero_si128();
2340
  } else if (mod_order1 == 6) {
2341 2342 2343
    QAM_amp1_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp1_128b = _mm_set1_epi16(QAM64_n2);
  }
2344

2345
  for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) {
2346

2347
   /* if (aarx==0) {
2348
      output_shift=output_shift0;
2349 2350
    }
      else {
2351
        output_shift=output_shift1;
2352
      } */
2353

2354
     // printf("antenna %d\n", aarx);
2355
   // printf("symbol %d, rx antenna %d\n", symbol, aarx);
2356

2357 2358
    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
2359

2360

2361 2362 2363 2364
    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
2368 2369

    for (rb=0; rb<nb_rb; rb++) {
2370

2371
      // combine TX channels using precoder from pmi
2372 2373 2374
      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]);
2375 2376


2377
        if (pilots==0) {
2378
          prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
2379 2380 2381
        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
2382 2383 2384
        prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);

2385
        if (pilots==0) {
2386
          prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
2387 2388 2389 2390 2391
        }
      }
      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]);
2392

2393
        if (pilots==0) {
2394
          prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
2395 2396
        }
      }
2397

2398
        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING) {
2399 2400
        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]);
2401

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2402
        if (pilots==0) {
2403
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]);
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2404 2405
        }
      }
2406 2407


2408 2409 2410
      else {
        LOG_E(PHY,"Unknown MIMO mode\n");
        return;
2411 2412
      }

2413

2414 2415 2416 2417
      if (mod_order0>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],dl_ch0_128[0]);
2418
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
2419 2420

        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
2421
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439

        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]);
2440
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453

          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);

2454
       // print_shorts("dl_ch_mag0_128b[0]=",&dl_ch_mag0_128b[0]);
2455 2456 2457 2458 2459 2460 2461 2462

        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);
        }
2463 2464
      }

2465 2466 2467 2468
      if (mod_order1>2) {
        // get channel amplitude if not QPSK

        mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],dl_ch1_128[0]);
2469
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
2470 2471

        mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
2472
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
2473 2474 2475 2476 2477 2478 2479 2480

        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);

2481
       // print_shorts("dl_ch_mag1_128[0]=",&dl_ch_mag1_128[0]);
2482 2483 2484 2485 2486 2487 2488 2489

        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]);
2490
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift1);
2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503

          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);

2504
       // print_shorts("dl_ch_mag1_128b[0]=",&dl_ch_mag1_128b[0]);
2505 2506 2507 2508 2509 2510 2511 2512

        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]);
2518
    //  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]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
2525
           // print_ints("im",&mmtmpD1);
2526
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
2527
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
2528 2529
           // printf("Shift: %d\n",output_shift);
          // print_ints("re(shift)",&mmtmpD0);
2530
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2531
           // 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);
2536
      rxdataF_comp0_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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2538 2539 2540
           // print_shorts("rx:",rxdataF128);
           // print_shorts("ch:",dl_ch0_128);
        // print_shorts("pack:",rxdataF_comp0_128);
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2542 2543 2544 2545 2546 2547 2548 2549
      // 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)
2550 2551
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift0);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift0);
2552 2553
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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2555
      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);
2558
            // print_shorts("pack:",rxdataF_comp0_128+1);
2559

2560
      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);
2578 2579

      }
2580 2581


2582 2583 2584
      // layer 1
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],rxdataF128[0]);
2585
           //  print_ints("re",&mmtmpD0);
2586

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     // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
2588
      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);
2595
             // 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);
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             // print_ints("c0",&mmtmpD2);
             // print_ints("c1",&mmtmpD3);
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      rxdataF_comp1_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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            // print_shorts("rx:",rxdataF128);
            //  print_shorts("ch:",dl_ch1_128);
            // print_shorts("pack:",rxdataF_comp1_128);
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     // multiply by conjugated channel
2608
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[1],rxdataF128[1]);
2609
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
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      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[1],_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);
      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_shift1);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift1);
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      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      rxdataF_comp1_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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            //  print_shorts("rx:",rxdataF128+1);
           // print_shorts("ch:",dl_ch1_128+1);
2623
            // print_shorts("pack:",rxdataF_comp1_128+1);
2624

2625
      if (pilots==0) {
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        // 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)
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        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);

        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;
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      }
      else {
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        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;
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      }
2665

2666
    } // rb loop
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    Nre = (pilots==0) ? 12 : 8;
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2669
    precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2670
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
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2672
    precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
2673
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2674
  } // rx_antennas
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  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);
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2679
 // printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
2680
     //  measurements->precoded_cqi_dB[eNB_id][0]);
2681

2682
  _mm_empty();
2683
  _m_empty();
2684

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2685
  #elif defined(__arm__)
2686

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  unsigned short rb,Nre;
  unsigned char aarx,symbol_mod,pilots=0;
2689
  int precoded_signal_strength0=0,precoded_signal_strength1=0, rx_power_correction;
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  int16x4_t *dl_ch0_128,*rxdataF128;
  int16x4_t *dl_ch1_128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
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  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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2699 2700 2701
  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;
2702
  int **dl_ch_mag1            = pdsch_vars->dl_ch_mag1[harq_pid][round];
2703
  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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2708
  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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2710
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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2712
  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
2714
      { nb_rb=1+(5*nb_rb/6); }
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    else
      { pilots=1; }
2718
  }
2719

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2720
  rx_power_correction=1;
2721

2722
  if (mod_order0 == 4) {
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    QAM_amp0_128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
    QAM_amp0_128b = vmovq_n_s16(0);
2725

2726
  } 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);
2729
  }
2730

2731
  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);
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2735
  } else if (mod_order1 == 6) {
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    QAM_amp1_128  = vmovq_n_s16(QAM64_n1); //
    QAM_amp1_128b = vmovq_n_s16(QAM64_n2);
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  }
2739

2740
  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
2741

2742
  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];
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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];
2753
    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];
2757

2758
    for (rb=0; rb<nb_rb; rb++) {
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      // 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]);
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2764

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2765
        if (pilots==0) {
2766
          prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]);
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        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
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        prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]);

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        if (pilots==0) {
2774
          prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]);
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        }
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      }
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      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]);
2780

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2781
        if (pilots==0) {
2782
          prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]);
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        }
      }
      else {
        LOG_E(PHY,"Unknown MIMO mode\n");
        return;
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      }


      if (mod_order0>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_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);
        }
2827 2828 2829
      }

      if (mod_order1>2) {
2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864
        // 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);
        }
2865
      }
2866

2867
      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
2868
      //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])]
2869
      mmtmpD1 = vmull_s16(dl_ch0_128[1], rxdataF128[1]);
2870
      //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])]
2871
      mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
2872
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2873 2874
      //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])]

2875
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
2876
      //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])]
2877
      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
2878
      //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])]
2879
      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
2880
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2881
      //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])]
2882

2883 2884 2885
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2886

2887 2888 2889
      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)),
2890
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2891

2892 2893 2894
      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)),
2895
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2896

2897 2898 2899
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2900

2901 2902 2903 2904
      // 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)),
2905
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2906
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
2907

2908 2909 2910
      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)),
2911
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2912
      //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])]
2913

2914 2915 2916
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2917

2918 2919 2920
      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)),
2921
                             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
2922

2923 2924 2925
      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)),
2926
                             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
2927

2928 2929 2930
      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp1_128[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
2931

2932
      if (pilots==0) {
2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960
        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));
2961 2962
      }
    }
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2966
    Nre = (pilots==0) ? 12 : 8;
2967

2968 2969
    // rx_antennas
  }
2970 2971


2972
  Nre = (pilots==0) ? 12 : 8;
2973

2974
  precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
2975
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2976
  precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
2977
                                                        (nb_rb*Nre))*rx_power_correction) - (measurements->n0_power[aarx]));
2978

2979 2980
  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);
2981

2982
#endif
2983
}
2984

2985

2986 2987 2988 2989 2990 2991
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,
2992 2993 2994
                                   unsigned char output_shift)
{

2995 2996
#if defined(__x86_64__)||defined(__i386__)

2997
  unsigned short rb;
2998
  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
2999
  unsigned char aarx,symbol_mod,pilots=0;
3000

3001 3002 3003
  //    printf("dlsch_dual_stream_correlation: symbol %d\n",symbol);

  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
3004

3005 3006 3007
  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
    pilots=1;
  }
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3009 3010
  //  printf("Dual stream correlation (%p)\n",dl_ch_estimates_ext_i);

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

3013 3014


3015
 //printf ("antenna %d", aarx);
3016
    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
3017

3018 3019 3020 3021
    if (dl_ch_estimates_ext_i == NULL) // TM3/4
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    else
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][symbol*frame_parms->N_RB_DL*12];
3022

3023
    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];
3024 3025 3026


    for (rb=0; rb<nb_rb; rb++) {
3027 3028
      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
3029
      //      print_ints("re",&mmtmpD0);
3030 3031 3032 3033 3034
      // 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]);
3035
      //      print_ints("im",&mmtmpD1);
3036 3037
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
3038
      //      print_ints("re(shift)",&mmtmpD0);
3039
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
3040
      //      print_ints("im(shift)",&mmtmpD1);
3041 3042
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
3043 3044
      //      print_ints("c0",&mmtmpD2);
      //      print_ints("c1",&mmtmpD3);
3045
      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
3046
    // print_shorts("rho 0:",dl_ch_rho128);
3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059
      // 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);
3060

3061 3062

      if (pilots==0) {
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3063

3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076
        // 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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3078 3079 3080 3081 3082 3083 3084 3085 3086
       dl_ch128+=3;
        dl_ch128i+=3;
        dl_ch_rho128+=3;
      } else {

        dl_ch128+=2;
        dl_ch128i+=2;
        dl_ch_rho128+=2;
      }
3087
    }
3088

3089
  }
3090

3091 3092 3093 3094 3095 3096 3097 3098
  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}

3099

3100
/*void dlsch_dual_stream_correlationTM34(LTE_DL_FRAME_PARMS *frame_parms,
3101 3102 3103 3104 3105 3106
                                   unsigned char symbol,
                                   unsigned short nb_rb,
                                   int **dl_ch_estimates_ext,
                                   int **dl_ch_estimates_ext_i,
                                   int **dl_ch_rho_ext,
                                   unsigned char output_shift0,
3107
                                   unsigned char output_shift1)
3108 3109 3110 3111 3112 3113 3114 3115
{

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

  unsigned short rb;
  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
  unsigned char aarx,symbol_mod,pilots=0;
  int output_shift;
3116

3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127
  //    printf("dlsch_dual_stream_correlation: symbol %d\n",symbol);

  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;
  }

  //  printf("Dual stream correlation (%p)\n",dl_ch_estimates_ext_i);

  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3128

3129
       if (aarx==0) {
3130
      output_shift=output_shift0;
3131 3132
    }
      else {
3133
        output_shift=output_shift1;
3134
      }
3135

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 //printf ("antenna %d", aarx);
    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];

    if (dl_ch_estimates_ext_i == NULL) // TM3/4
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    else
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][symbol*frame_parms->N_RB_DL*12];

    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];


    for (rb=0; rb<nb_rb; rb++) {
      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[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]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[0]);
      //      print_ints("im",&mmtmpD1);
      // 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);
      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
    // 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);
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3182

3183
      if (pilots==0) {
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        // 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;
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        dl_ch128i+=3;
        dl_ch_rho128+=3;
      } else {
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        dl_ch128+=2;
        dl_ch128i+=2;
        dl_ch_rho128+=2;
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      }
3208
    }
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  }
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  _mm_empty();
  _m_empty();
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#elif defined(__arm__)

#endif
3218
}
3219
*/
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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,
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                         unsigned char dual_stream_UE)
{

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

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  unsigned char aatx;
  int i;
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  __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,
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    *dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;
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  if (frame_parms->nb_antennas_rx>1) {

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    for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
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      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];
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      // 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++) {
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        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));
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          //       print_shorts("mrc comp0:",&rxdataF_comp128_0[i]);
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        //       print_shorts("mrc mag0:",&dl_ch_mag128_0[i]);
        //       print_shorts("mrc mag0b:",&dl_ch_mag128_0b[i]);
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        //      print_shorts("mrc rho1:",&rho128_1[i]);
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      }
    }

    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++) {
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        //      print_shorts("mrc rho0:",&rho128_0[i]);
        //      print_shorts("mrc rho1:",&rho128_1[i]);
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        rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
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      }
    }


    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];
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      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];
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      dl_ch_mag128_i1b     = (__m128i *)&dl_ch_magb_i[1][symbol*frame_parms->N_RB_DL*12];
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      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));
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      }
    }
  }
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  _mm_empty();
  _m_empty();
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#elif defined(__arm__)

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  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++) {
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      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]);
      }
    }
  }

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#endif
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}

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void dlsch_detection_mrc_TM34(LTE_DL_FRAME_PARMS *frame_parms,
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                              LTE_UE_PDSCH *pdsch_vars,
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                              int harq_pid,
                              int round,
                              unsigned char symbol,
                              unsigned short nb_rb,
                              unsigned char dual_stream_UE) {
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  int i;
  __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,*dl_ch_mag128_i0,*dl_ch_mag128_i1,*dl_ch_mag128_i0b,*dl_ch_mag128_i1b;

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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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3382
  if (frame_parms->nb_antennas_rx>1) {
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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];
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      // 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] = _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));
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        // print_shorts("mrc compens0:",&rxdataF_comp128_0[i]);
        // print_shorts("mrc mag128_0:",&dl_ch_mag128_0[i]);
        // print_shorts("mrc mag128_0b:",&dl_ch_mag128_0b[i]);
3400
      }    }
3401 3402

   // if (rho) {
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      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];
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      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] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
      }
   //}


    if (dual_stream_UE == 1) {
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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];
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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];
      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));
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3426 3427
        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));
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        //print_shorts("mrc compens1:",&rxdataF_comp128_i0[i]);
        //print_shorts("mrc mag128_i0:",&dl_ch_mag128_i0[i]);
        //print_shorts("mrc mag128_i0b:",&dl_ch_mag128_i0b[i]);
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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,
3445
                         uint8_t symbol,
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                         unsigned short nb_rb)
{
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3449 3450
#if defined(__x86_64__)||defined(__i386__)

3451 3452
  short rb, ch_amp;
  unsigned char aatx,aarx,pilots=0,symbol_mod;
3453 3454
  __m128i *dl_ch128, ch_amp128;

3455 3456 3457
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
3458
    if (frame_parms->nb_antenna_ports_eNB==1) // 10 out of 12 so don't reduce size
3459
      nb_rb=1+(5*nb_rb/6);
3460
    else
3461 3462 3463 3464 3465
      pilots=1;
  }

  // Determine scaling amplitude based the symbol

3466 3467 3468
  ch_amp = ((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
  
  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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3469
   // printf("Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
3470 3471 3472

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

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3473
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++) {
3474
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3475 3476

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
3477

3478
      for (rb=0;rb<nb_rb;rb++) {
3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491

        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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3493 3494
        }
      }
3495 3496
    }
  }
3497

3498 3499 3500
#elif defined(__arm__)

#endif
3501 3502
}

3503

3504 3505
//compute average channel_level on each (TX,RX) antenna pair
void dlsch_channel_level(int **dl_ch_estimates_ext,
3506
                         LTE_DL_FRAME_PARMS *frame_parms,
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3507
                         int32_t *avg,
3508 3509 3510
                         uint8_t symbol,
                         unsigned short nb_rb)
{
3511

3512 3513
#if defined(__x86_64__)||defined(__i386__)

3514 3515
  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
3516
  __m128i *dl_ch128, avg128D;
3517

3518 3519
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

3520
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3521
    nre=8;
3522
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3523 3524 3525 3526
    nre=10;
  else
    nre=12;

3527
  //nb_rb*nre = y * 2^x
3528
  int16_t x = factor2(nb_rb*nre);
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3529
  int16_t y = (nb_rb*nre)>>x;
3530
  //printf("nb_rb*nre = %d = %d * 2^(%d)\n",nb_rb*nre,y,x);
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3531

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3532
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3533
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3534
      //clear average level
3535
      avg128D = _mm_setzero_si128();
3536 3537 3538 3539 3540
      // 5 is always a symbol with no pilots for both normal and extended prefix

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

      for (rb=0;rb<nb_rb;rb++) {
3541 3542
        //      printf("rb %d : ",rb);
        //      print_shorts("ch",&dl_ch128[0]);
3543 3544 3545 3546 3547
	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));

        //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)));
3548

3549
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3550
          dl_ch128+=2;
3551 3552
        }
        else {
3553 3554
	  avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x));
          //avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch128[2],_mm_srai_epi16(_mm_mulhi_epi16(dl_ch128[2], coeff128),15)));
3555 3556 3557 3558 3559 3560 3561 3562 3563
          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]);
          }
        */
3564 3565
      }

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3566 3567 3568
      avg[(aatx<<1)+aarx] =(((int32_t*)&avg128D)[0] +
                            ((int32_t*)&avg128D)[1] +
                            ((int32_t*)&avg128D)[2] +
3569
			      ((int32_t*)&avg128D)[3])/y;
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3570
                //  printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
3571
    }
3572

3573 3574 3575
  _mm_empty();
  _m_empty();

3576 3577
#elif defined(__arm__)

3578 3579 3580 3581 3582 3583 3584
  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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3585
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600
    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<<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 = 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]));

3601
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618
          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]);
          }
        */
      }


3619
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3620
        nre=8;
3621
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634
        nre=10;
      else
        nre=12;

      avg[(aatx<<1)+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<<1)+aarx]);
    }


3635
#endif
3636 3637
}

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3638 3639
//compute average channel_level of effective (precoded) channel

3640
//compute average channel_level of effective (precoded) channel
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3641 3642
void dlsch_channel_level_TM34(int **dl_ch_estimates_ext,
                              LTE_DL_FRAME_PARMS *frame_parms,
3643
                              unsigned char *pmi_ext,
3644
                              int *avg_0,
3645
                              int *avg_1,
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3646 3647 3648 3649
                              uint8_t symbol,
                              unsigned short nb_rb,
                              MIMO_mode_t mimo_mode){

3650
#if defined(__x86_64__)||defined(__i386__)
3651

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3652

3653 3654
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
3655
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp, avg_0_128D, avg_1_128D;
3656 3657 3658 3659

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

  //clear average level
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3660 3661
 // avg_0_128D = _mm_setzero_si128();
 // avg_1_128D = _mm_setzero_si128();
3662 3663 3664 3665
  avg_0[0] = 0;
  avg_0[1] = 0;
  avg_1[0] = 0;
  avg_1[1] = 0;
3666 3667
  // 5 is always a symbol with no pilots for both normal and extended prefix

3668
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3669
    nre=8;
3670
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3671 3672 3673 3674
    nre=10;
  else
    nre=12;

3675
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3676 3677
    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];
3678

3679 3680
    avg_0_128D = _mm_setzero_si128();
    avg_1_128D = _mm_setzero_si128();
3681
    for (rb=0; rb<nb_rb; rb++) {
3682 3683
              // printf("rb %d : \n",rb);
              // print_shorts("ch0\n",&dl_ch0_128[0]);
3684
               //print_shorts("ch1\n",&dl_ch1_128[0]);
3685 3686 3687
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);

3688
      if (mimo_mode==LARGE_CDD)
3689 3690 3691 3692 3693
        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);
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3694
      else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
3695
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3696

3697
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3698
      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3699

3700
      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
3701

3702
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
3703
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
3704

3705
      if (mimo_mode==LARGE_CDD)
3706 3707 3708 3709 3710
        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);
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3711
      else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
3712
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3713

3714
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3715
      avg_0_128D = _mm_add_epi32(avg_0_128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3716

3717
      avg_1_128D = _mm_add_epi32(avg_1_128D,_mm_madd_epi16(dl_ch1_128_tmp,dl_ch1_128_tmp));
3718

3719
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3720
        dl_ch0_128+=2;
3721
        dl_ch1_128+=2;
3722 3723
      }
      else {
3724
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
3725
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);
3726

3727
        if (mimo_mode==LARGE_CDD)
3728 3729 3730 3731 3732
          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);
3733 3734
        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3735
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3736

3737 3738
        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));
3739 3740

        dl_ch0_128+=3;
3741
        dl_ch1_128+=3;
3742
      }
3743
    }
3744 3745


3746 3747 3748 3749 3750
    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]);
3751

3752 3753 3754
    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) +
3755
      (((int*)&avg_1_128D)[3])/(nb_rb*nre);
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3756
  //    printf("From Chan_level aver stream 1 %d =%d\n", aarx, avg_1[aarx]);
3757
  }
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3758 3759 3760 3761 3762
//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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3763
 // printf("From Chan_level aver stream 0 final =%d\n", avg_0[0]);
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3764
  avg_1[0] = avg_1[0] + avg_1[1];
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3765 3766 3767 3768
 // 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];

3769 3770
  _mm_empty();
  _m_empty();
3771

3772
#elif defined(__arm__)
3773

3774
#endif
3775 3776
}

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/*void dlsch_channel_level_TM34(int **dl_ch_estimates_ext,
                              LTE_DL_FRAME_PARMS *frame_parms,
                              int *avg,
                              uint8_t symbol,
                              unsigned short nb_rb,
                              MIMO_mode_t mimo_mode){

3786
#if defined(__x86_64__)||defined(__i386__)
3787

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3788

3789 3790 3791 3792 3793 3794 3795
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;

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

  //clear average level
3796
  avg128D = _mm_setzero_si128();
3797 3798 3799 3800
  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

3801
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3802
    nre=8;
3803
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3804 3805 3806 3807
    nre=10;
  else
    nre=12;

3808
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3809 3810 3811
    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];

3812
    for (rb=0; rb<nb_rb; rb++) {
3813 3814 3815 3816

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

3817
      if (mimo_mode==LARGE_CDD)
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        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);

3824
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3825 3826 3827
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
3828
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
3829

3830
      if (mimo_mode==LARGE_CDD)
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3831 3832 3833 3834 3835 3836
        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);

3837
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3838 3839
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

3840
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3841 3842
        dl_ch0_128+=2;
        dl_ch1_128+=2;
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3843 3844
      }
      else {
3845 3846 3847
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);

3848
        if (mimo_mode==LARGE_CDD)
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3849 3850 3851 3852 3853 3854 3855
          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);

        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3856 3857 3858 3859
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

        dl_ch0_128+=3;
        dl_ch1_128+=3;
3860 3861
      }
    }
3862 3863

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
3864 3865 3866
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
      (((int*)&avg128D)[3])/(nb_rb*nre);
3867
  }
3868

3869 3870 3871 3872 3873
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
3874 3875 3876 3877

#elif defined(__arm__)

#endif
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3878
}*/
3879 3880 3881

//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,
3885
                              uint8_t symbol,
3886 3887
                              unsigned short nb_rb)
{
3888

3889 3890
#if defined(__x86_64__)||defined(__i386__)

3891 3892
  short rb;
  unsigned char aarx,nre=12,symbol_mod;
3893
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;
3894 3895 3896 3897

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

  //clear average level
3898
  avg128D = _mm_setzero_si128();
3899 3900 3901 3902
  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

3903
  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1))
3904
    nre=8;
3905
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB==1))
3906 3907 3908 3909
    nre=10;
  else
    nre=12;

3910
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3911 3912
    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];
3913

3914
    for (rb=0; rb<nb_rb; rb++) {
3915

3916 3917
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
3918

3919
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3920
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3921
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3922

3923
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
3924
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
3925

3926
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3927
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3928
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3929

3930
      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
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        dl_ch0_128+=2;
        dl_ch1_128+=2;
3933 3934
      }
      else {
3935 3936 3937 3938
        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);
3939
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3940 3941 3942 3943
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

        dl_ch0_128+=3;
        dl_ch1_128+=3;
3944 3945
      }
    }
3946 3947

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
3948 3949 3950
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
      (((int*)&avg128D)[3])/(nb_rb*nre);
3951
  }
3952

3953 3954 3955 3956 3957
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
3958 3959 3960 3961 3962

#elif defined(__arm__)


#endif
3963
}
3964

3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980
//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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3981
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_eNB; aatx++)
3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994
    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]));

3995
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_eNB!=1)) {
3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034
          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
}
4035
//#define ONE_OVER_2_Q15 16384
4036 4037 4038 4039 4040
void dlsch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
                    int **rxdataF_comp,
                    int **dl_ch_mag,
                    int **dl_ch_magb,
                    unsigned char symbol,
4041 4042
                    unsigned short nb_rb)
{
4043

4044
#if defined(__x86_64__)||defined(__i386__)
4045 4046

  short *rxF0,*rxF1;
4047
  __m128i *ch_mag0,*ch_mag1,*ch_mag0b,*ch_mag1b, *rxF0_128;
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  unsigned char rb,re;
  int jj = (symbol*frame_parms->N_RB_DL*12);
4050 4051
  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;
4052 4053
  rxF0_128 = (__m128i*) &rxdataF_comp[0][jj];

4054
  //amp = _mm_set1_epi16(ONE_OVER_2_Q15);
4055 4056 4057 4058 4059 4060 4061 4062 4063


  //    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];
4064

4065 4066 4067
  for (rb=0; rb<nb_rb; rb++) {

    for (re=0; re<((pilots==0)?12:8); re+=2) {
4068 4069

      // Alamouti RX combining
4070

4071
      //      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]);
4072
      rxF0[0] = rxF0[0] + rxF1[2];
4073
      rxF0[1] = rxF0[1] - rxF1[3];
4074 4075 4076

      rxF0[2] = rxF0[2] - rxF1[0];
      rxF0[3] = rxF0[3] + rxF1[1];
4077

4078
      //      printf("Alamouti: rxF0 after (%d,%d,%d,%d)\n",rxF0[0],rxF0[1],rxF0[2],rxF0[3]);
4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091
      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
4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104
    //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);

4105 4106 4107 4108 4109 4110


    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]);

4111 4112 4113 4114 4115 4116 4117
      //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);
4118 4119 4120 4121 4122 4123 4124


      ch_mag0+=3;
      ch_mag1+=3;
      ch_mag0b+=3;
      ch_mag1b+=3;
      rxF0_128+=3;
4125
    } else {
4126 4127 4128 4129 4130 4131 4132 4133 4134
      ch_mag0+=2;
      ch_mag1+=2;
      ch_mag0b+=2;
      ch_mag1b+=2;
      rxF0_128+=2;
    }
  }

  _mm_empty();
4135
  _m_empty();
4136

4137
#elif defined(__arm__)
4138

4139
#endif
4140 4141
}

4142

4143 4144 4145 4146 4147 4148 4149 4150 4151 4152 4153 4154 4155
//==============================================================================================
// 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,
4156
                                        uint32_t high_speed_flag,
4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172
                                        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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4173
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
4174

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4175
  if (frame_parms->frame_type == TDD) {  // TDD
4176 4177
    sss_symb = nsymb-1;
    pss_symb = 2;
4178
  } else {
4179 4180 4181
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }
4182

4183 4184 4185
  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;

4186
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4187 4188 4189 4190 4191

    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];
4192

4193 4194 4195 4196
    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)))];
4197

4198
    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
4199

4200
      for (rb=0;rb<frame_parms->N_RB_DL;rb++) {
4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212

        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;

4213
        if (rb_alloc_ind == 1)
4214 4215
          nb_rb++;

4216 4217 4218 4219 4220 4221
        // 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++;
        }

4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246
        // 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;
          }
        }

4247 4248 4249 4250 4251
        if (rb_alloc_ind==1) {
          *pmi_ext = (pmi>>((rb>>2)<<1))&3;
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

          /*
4252 4253 4254 4255
            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");
4256 4257 4258 4259 4260
          */
          if (pilots==0) {
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
              /*
4261 4262
                printf("%d : (%d,%d)\n",(rxF+i-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))]),
                ((short*)&rxF[i])[0],((short*)&rxF[i])[1]);*/
4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 4280 4281 4282 4283
            }

            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;
          }

4284

4285 4286 4287 4288
        }

        dl_ch0+=12;
        rxF+=12;
4289 4290 4291

      }
    else {  // Odd number of RBs
4292
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
4293
#ifdef DEBUG_DLSCH_DEMOD
4294
        printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
4295
#endif
4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308
        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;

4309 4310
        if (rb_alloc_ind == 1)
          nb_rb++;
4311 4312 4313 4314 4315 4316 4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343


        // 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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4345
          if (((subframe==0)||(subframe==5)) &&
4346 4347 4348
              (rb>((frame_parms->N_RB_DL>>1)-3)) &&
              (rb<((frame_parms->N_RB_DL>>1)+3)) &&
              (l==pss_symb) ) {
4349 4350 4351 4352 4353 4354 4355 4356 4357 4358
            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) &&
4359
            (subframe==6)){  //TDD Subframe 6
4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370
          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) {
4371

4372
#ifdef DEBUG_DLSCH_DEMOD
4373
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
4374
#endif
4375
          if (pilots==0) {
4376
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
4377 4378 4379
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

4380
              for (i=0; i<6; i++) {
4381
                rxF_ext[i]=rxF[i];
4382
#ifdef DEBUG_DLSCH_DEMOD
4383
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4384
#endif
4385
              }
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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));

4391
              for (i=0; i<6; i++) {
4392
                rxF_ext[i]=rxF[(i+6)];
4393
#ifdef DEBUG_DLSCH_DEMOD
4394
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4395
#endif
4396
              }
4397 4398 4399 4400 4401
              dl_ch0_ext+=6;
              rxF_ext+=6;
            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));

4402
              for (i=0; i<12; i++) {
4403
                rxF_ext[i]=rxF[i];
4404 4405 4406
#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
4407
              }
4408 4409 4410 4411
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
4412
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
4413 4414 4415 4416 4417 4418
            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];
                }
              }
4425
              rxF_ext+=5;
4426 4427 4428 4429 4430
              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)];
4431
#ifdef DEBUG_DLSCH_DEMOD
4432
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4433
#endif
4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444
                  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];
4445
#ifdef DEBUG_DLSCH_DEMOD
4446
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4447
#endif
4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459
                  dl_ch0_ext[j++]=dl_ch0[i];

                }
              }

              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          }
        }
        dl_ch0+=12;
        rxF+=12;
4460 4461 4462 4463 4464
      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
4465
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
4466
      else if (rb < 64)
4467
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
4468
      else if (rb < 96)
4469
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
4470
      else if (rb < 100)
4471
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
4472
      else
4473
        rb_alloc_ind = 0;
4474

4475

4476
      if (rb_alloc_ind == 1)
4477
        nb_rb++;
4478 4479

      // PBCH
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4480

4481
      if ((subframe==0) &&
4482 4483
          (l>=(nsymb>>1)) &&
          (l<((nsymb>>1) + 4))) {
4484
        rb_alloc_ind = 0;
4485
      }
4486

4487
      //SSS
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4488
      if (((subframe==0)||(subframe==5)) && (l==sss_symb) ) {
4489
        rb_alloc_ind = 0;
4490
      }
4491

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4492
      if (frame_parms->frame_type == FDD) {
4493
        //PSS
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4494
        if (((subframe==0)||(subframe==5)) && (l==pss_symb) ) {
4495 4496
          rb_alloc_ind = 0;
        }
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      }

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4499
      //PSS
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4500
      if ((frame_parms->frame_type == TDD) &&
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4501
          (subframe==6) &&
4502 4503
          (l==pss_symb) ) {
        rb_alloc_ind = 0;
4504
      }
4505

4506 4507

      //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
4508 4509
      //      printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
4510
#ifdef DEBUG_DLSCH_DEMOD
4511
        printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
4512
#endif
4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531 4532 4533 4534
        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];
4535 4536 4537
#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
4538 4539 4540 4541 4542 4543 4544 4545 4546
            }
          }

          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)];
4547 4548
#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]));
4549
#endif
4550 4551 4552 4553 4554 4555
            }
          }

          dl_ch0_ext+=10;
          rxF_ext+=10;
        } // symbol_mod==0
4556 4557
      } // rballoc==1
      else {
4558
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
4559
      }
4560

4561 4562 4563
      dl_ch0+=12;
      rxF+=7;
      rb++;
4564

4565
      for (;rb<frame_parms->N_RB_DL;rb++) {
4566
        //      printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
4567
        //      printf("rb %d (%p)\n",rb,rxF);
4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580
        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;

4581 4582
        if (rb_alloc_ind == 1)
          nb_rb++;
4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607 4608 4609

        // 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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4611 4612 4613 4614 4615 4616 4617
          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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4618

4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630
            (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) {
4631
#ifdef DEBUG_DLSCH_DEMOD
4632
          printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
4633
#endif
4634
          /*
4635
            printf("rb %d\n",rb);
4636 4637 4638 4639 4640
            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) {
4641
            //      printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
4642 4643 4644
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));

4645
              for (i=0; i<6; i++) {
4646
                rxF_ext[i]=rxF[i];
4647
#ifdef DEBUG_DLSCH_DEMOD
4648
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4649
#endif
4650
              }
4651 4652 4653 4654 4655 4656
              dl_ch0_ext+=6;
              rxF_ext+=6;

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

4657
              for (i=0; i<6; i++) {
4658
                rxF_ext[i]=rxF[(i+6)];
4659
#ifdef DEBUG_DLSCH_DEMOD
4660
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4661
#endif
4662
              }
4663 4664 4665 4666 4667 4668
              dl_ch0_ext+=6;
              rxF_ext+=6;

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

4669
              for (i=0; i<12; i++) {
4670
                rxF_ext[i]=rxF[i];
4671
#ifdef DEBUG_DLSCH_DEMOD
4672
                printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
4673
#endif
4674
              }
4675 4676 4677 4678
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
          } else {
4679
            //      printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
4680 4681 4682 4683 4684 4685
            j=0;

            if (skip_half==1) {
              for (i=0; i<6; i++) {
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
4686
#ifdef DEBUG_DLSCH_DEMOD
4687
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4688
#endif
4689 4690 4691 4692 4693 4694 4695 4696 4697 4698
                  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)];
4699
#ifdef DEBUG_DLSCH_DEMOD
4700
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4701
#endif
4702 4703 4704 4705 4706 4707 4708 4709 4710 4711 4712
                  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];
4713
#ifdef DEBUG_DLSCH_DEMOD
4714
                  printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
4715
#endif
4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } // pilots=0
        }

        dl_ch0+=12;
        rxF+=12;
4727 4728 4729
      }
    }
  }
4730

4731 4732 4733 4734 4735 4736 4737 4738 4739 4740 4741 4742 4743

  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,
4744
                                      uint32_t high_speed_flag,
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4745
                                      LTE_DL_FRAME_PARMS *frame_parms,
4746
                                      MIMO_mode_t mimo_mode) {
4747

4748 4749 4750 4751 4752 4753
  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;
4754 4755 4756 4757 4758 4759 4760
  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;
4761

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4762
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
4763 4764
  l=symbol;

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4765
  if (frame_parms->frame_type == TDD) {  // TDD
4766 4767
    sss_symb = nsymb-1;
    pss_symb = 2;
4768
  } else {
4769 4770 4771 4772
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }

4773
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4774 4775 4776 4777

    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))];
4778
    } else {
4779 4780 4781
      dl_ch0     = &dl_ch_estimates[aarx][5];
      dl_ch1     = &dl_ch_estimates[2+aarx][5];
    }
4782

4783
    pmi_loc = pmi_ext;
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    // pointers to extracted RX signals and channel estimates
    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
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    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
    dl_ch1_ext = &dl_ch_estimates_ext[2+aarx][symbol*(frame_parms->N_RB_DL*12)];

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    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
      skip_half=0;
4792

4793
      if (prb < 32)
4794
        rb_alloc_ind = (rb_alloc[0]>>prb) & 1;
4795
      else if (prb < 64)
4796
        rb_alloc_ind = (rb_alloc[1]>>(prb-32)) & 1;
4797
      else if (prb < 96)
4798
        rb_alloc_ind = (rb_alloc[2]>>(prb-64)) & 1;
4799
      else if (prb < 100)
4800
        rb_alloc_ind = (rb_alloc[3]>>(prb-96)) & 1;
4801
      else
4802
        rb_alloc_ind = 0;
4803 4804 4805

      if (rb_alloc_ind == 1)
          nb_rb++;
4806

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4807 4808 4809

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

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

        //SSS

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



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

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

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



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

         /*
         if (mimo_mode <= PUSCH_PRECODING1)
4872
          *pmi_loc = (pmi>>((prb>>2)<<1))&3;
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         else
          *pmi_loc=(pmi>>prb)&1;*/
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         *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
4877
          pmi_loc++;
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4880
          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));
4885 4886 4887
            dl_ch0_ext +=12;
            dl_ch1_ext +=12;
            rxF_ext    +=12;
4888
          } else { // pilots==1
4889 4890 4891 4892 4893 4894 4895 4896
            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;
4904 4905
          } // pilots==1

4906
        }
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4907
      } else {  // Odd number of RBs
4908

4909

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4910
      // 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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5010
#ifdef DEBUG_DLSCH_DEMOD
5011
          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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5012
#endif
5013
         /* if (mimo_mode <= PUSCH_PRECODING1)
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5014
           *pmi_loc = (pmi>>((prb>>2)<<1))&3;
5015 5016
          else
           *pmi_loc=(pmi>>prb)&1;
5017
         // 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);
5018
*/
5019
         *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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5028
#ifdef DEBUG_DLSCH_DEMOD
5029 5030
                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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                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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5039
#ifdef DEBUG_DLSCH_DEMOD
5040 5041
                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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5042
#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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5050
#ifdef DEBUG_DLSCH_DEMOD
5051 5052
                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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5053
#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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5066
#ifdef DEBUG_DLSCH_DEMOD
5067
                    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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5068
#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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5081
#ifdef DEBUG_DLSCH_DEMOD
5082
                    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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5083
#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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5099
#ifdef DEBUG_DLSCH_DEMOD
5100
                    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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5101
#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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5117
#ifdef DEBUG_DLSCH_DEMOD
5118 5119 5120
              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
5122 5123 5124 5125 5126
              rxF_ext+=6;
              dl_ch0_ext+=6;
              dl_ch1_ext+=6;
              dl_ch0p+=6;
              dl_ch1p+=6;
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5128
              rxF       = &rxdataF[aarx][1+((symbol*(frame_parms->ofdm_symbol_size)))];
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5130 5131 5132
              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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5133
#ifdef DEBUG_DLSCH_DEMOD
5134 5135 5136
              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;
            } 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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5150
#ifdef DEBUG_DLSCH_DEMOD
5151
                  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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5152
#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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5163
#ifdef DEBUG_DLSCH_DEMOD
5164
                  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
5175
      } // if rballoc==1
5176
    } // for prb
5177
  } // 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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5197 5198
  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;
  }
5212

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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;
5219
  }
5220

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  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;
5223

5224 5225
  if ((frame_parms->Ncp==0 && (symbol==6 ||symbol ==12)) || (frame_parms->Ncp==1 && symbol==7))
    uespec_poffset=2;
5226

5227
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
5228

5229 5230 5231 5232 5233 5234 5235 5236 5237
    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)))];
5238 5239

    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252
      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;

5253
  if (rb_alloc_ind == 1)
5254 5255
          nb_rb++;

5256 5257 5258 5259 5260
        // 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++;
        }
5261

5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285
        // 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;
          }
        }
5286

5287
        if (rb_alloc_ind==1) {
5288

5289 5290 5291 5292 5293 5294 5295 5296
          /*
              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));
5297

5298 5299 5300
            for (i=0; i<12; i++) {
              rxF_ext[i]=rxF[i];
            }
5301

5302 5303 5304 5305
            dl_ch0_ext+=12;
            rxF_ext+=12;
          } else if(pilots==1 && uespec_pilots==0) {
            j=0;
5306 5307 5308 5309 5310 5311 5312 5313 5314 5315 5316 5317 5318 5319

            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
5320

5321

5322
      for (i=0; i<12; i++){
5323
              if (frame_parms->Ncp==0){
5324 5325 5326
                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];
5327 5328
                }
              } else{
5329 5330
                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];
5331
                  dl_ch0_ext[j++]=dl_ch0[i];
5332
                }
5333
              }
5334 5335 5336

      }

5337
            dl_ch0_ext+=9-frame_parms->Ncp;
5338
            rxF_ext+=9-frame_parms->Ncp;
5339 5340

          } else {
5341
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
5342 5343 5344 5345 5346 5347 5348 5349 5350 5351 5352 5353 5354 5355 5356 5357 5358 5359 5360 5361 5362 5363 5364 5365
            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;

5366 5367
        if (rb_alloc_ind == 1)
          nb_rb++;
5368 5369 5370 5371 5372 5373 5374 5375 5376 5377 5378 5379 5380 5381 5382 5383 5384 5385 5386 5387 5388 5389 5390 5391 5392 5393 5394 5395 5396 5397 5398 5399 5400 5401 5402 5403 5404 5405 5406 5407 5408 5409 5410

        // 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;
        }

5411
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
5412 5413 5414 5415 5416 5417 5418 5419 5420 5421 5422 5423
          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) {
5424 5425 5426
#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
5427 5428

          if (pilots==0 && uespec_pilots==0) {
5429
            //printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
5430 5431 5432 5433

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

5434
              for (i=0; i<6; i++) {
5435
                rxF_ext[i]=rxF[i];
5436
#ifdef DEBUG_DLSCH_DEMOD
5437
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5438 5439
#endif
              }
5440 5441 5442 5443 5444 5445

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

5446
              for (i=0; i<6; i++) {
5447
                rxF_ext[i]=rxF[(i+6)];
5448
#ifdef DEBUG_DLSCH_DEMOD
5449
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5450 5451
#endif
              }
5452 5453 5454 5455 5456 5457

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

5458
              for (i=0; i<12; i++){
5459
                rxF_ext[i]=rxF[i];
5460 5461 5462
#ifdef DEBUG_DLSCH_DEMOD
                printf("extract rb %d, re %d => (%d,%d)\n",symbol,rb,i,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
5463
              }
5464 5465 5466
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
5467
          } else if (pilots==1 && uespec_pilots==0) {
5468 5469 5470 5471 5472 5473 5474 5475
            // 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];
5476
#ifdef DEBUG_DLSCH_DEMOD
5477
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5478
#endif
5479 5480 5481 5482 5483 5484 5485 5486 5487 5488
                }
              }

              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];
5489
#ifdef DEBUG_DLSCH_DEMOD
5490
    printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5491
#endif
5492 5493 5494 5495 5496 5497 5498 5499 5500 5501
                }
              }

              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];
5502 5503 5504
#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
5505 5506 5507 5508 5509 5510 5511 5512 5513 5514 5515 5516 5517 5518 5519 5520 5521 5522
                  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];
5523
#ifdef DEBUG_DLSCH_DEMOD
5524
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5525
#endif
5526 5527 5528 5529 5530 5531 5532
                  }
                }
                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++) {
5533
                  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){
5534 5535
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
5536
#ifdef DEBUG_DLSCH_DEMOD
5537
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5538
#endif
5539 5540 5541 5542 5543 5544 5545 5546 5547 5548 5549 5550
                  }
                }
                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];
5551
#ifdef DEBUG_DLSCH_DEMOD
5552
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5553
#endif
5554 5555 5556 5557 5558 5559 5560
                  }
                }
                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++) {
5561
                  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){
5562 5563
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
5564
#ifdef DEBUG_DLSCH_DEMOD
5565
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5566
#endif
5567 5568 5569 5570 5571 5572 5573 5574
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {

5575
        for (i=0; i<12; i++){
5576 5577
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
5578 5579
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++] = dl_ch0[i];
5580 5581 5582
#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
5583 5584
                  }
                } else{
5585 5586 5587
                  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];
5588
#ifdef DEBUG_DLSCH_DEMOD
5589
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5590
#endif
5591
                  }
5592
                }
5593 5594 5595

        }

5596
              dl_ch0_ext+=9-frame_parms->Ncp;
5597 5598 5599
              rxF_ext+=9-frame_parms->Ncp;
      }

5600
          } else {
5601
            LOG_E(PHY,"dlsch_extract_rbs_TM7(dl_demodulation.c):pilot or ue spec pilot detection error\n");
5602
            exit(-1);
5603

5604 5605 5606 5607 5608 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619 5620 5621 5622 5623
          }
        }

        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;

5624 5625
      if (rb_alloc_ind == 1)
        nb_rb++;
5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643

      // 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;
        }
      }

5644
      if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) {
5645 5646 5647 5648 5649 5650 5651 5652 5653 5654 5655 5656 5657 5658
        //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];
5659
#ifdef DEBUG_DLSCH_DEMOD
5660
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5661
#endif
5662 5663 5664 5665 5666 5667 5668
          }

          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)];
5669
#ifdef DEBUG_DLSCH_DEMOD
5670
      printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5671
#endif
5672 5673 5674 5675 5676 5677 5678 5679 5680 5681 5682
          }

          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];
5683
#ifdef DEBUG_DLSCH_DEMOD
5684
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5685
#endif
5686 5687 5688 5689 5690 5691 5692 5693 5694
            }
          }

          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)];
5695
#ifdef DEBUG_DLSCH_DEMOD
5696
        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5697
#endif
5698 5699 5700 5701 5702 5703 5704 5705
            }
          }

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

5706
    for (i=0; i<6; i++) {
5707
            if (frame_parms->Ncp==0){
5708 5709 5710
              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];
5711
#ifdef DEBUG_DLSCH_DEMOD
5712
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5713
#endif
5714 5715 5716
              }
            } 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){
5717 5718
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[i];
5719
#ifdef DEBUG_DLSCH_DEMOD
5720
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5721
#endif
5722 5723
              }
            }
5724 5725
    }

5726 5727 5728 5729
          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];

          for (; i<12; i++) {
            if (frame_parms->Ncp==0){
5730
              if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
5731 5732
                dl_ch0_ext[j]=dl_ch0[i];
                rxF_ext[j++]=rxF[(1+i-6)];
5733
#ifdef DEBUG_DLSCH_DEMOD
5734
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5735
#endif
5736 5737 5738
              }
            } 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){
5739 5740
                dl_ch0_ext[j]=dl_ch0[i];
          rxF_ext[j++] = rxF[(1+i-6)];
5741
#ifdef DEBUG_DLSCH_DEMOD
5742
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5743
#endif
5744 5745 5746
              }
            }
          }
5747

5748
          dl_ch0_ext+=9-frame_parms->Ncp;
5749 5750 5751
          rxF_ext+=9-frame_parms->Ncp;

  }// symbol_mod==0
5752 5753 5754 5755 5756 5757 5758 5759 5760 5761 5762 5763 5764 5765 5766 5767 5768 5769 5770 5771 5772 5773 5774 5775 5776 5777

      } // 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;

5778 5779
        if (rb_alloc_ind==1)
          nb_rb++;
5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793 5794 5795 5796 5797 5798 5799 5800 5801 5802

        // 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;

5803
        //PSS
5804 5805 5806 5807 5808 5809 5810 5811 5812 5813 5814
        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;
        }

5815
        if ((frame_parms->frame_type == TDD) && ((subframe==1)||(subframe==6))) { //TDD Subframe 1 and 6
5816 5817 5818 5819 5820 5821 5822 5823 5824 5825 5826
          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) {
5827 5828 5829
#ifdef DEBUG_DLSCH_DEMOD
           printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
5830 5831 5832 5833 5834 5835 5836 5837 5838 5839 5840
          /*
              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));

5841
              for (i=0; i<6; i++) {
5842
                rxF_ext[i]=rxF[i];
5843
#ifdef DEBUG_DLSCH_DEMOD
5844
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5845 5846
#endif
              }
5847 5848 5849 5850 5851 5852 5853

              dl_ch0_ext+=6;
              rxF_ext+=6;

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

5854
              for (i=0; i<6; i++) {
5855
                rxF_ext[i]=rxF[i+6];
5856
#ifdef DEBUG_DLSCH_DEMOD
5857
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5858 5859
#endif
              }
5860 5861 5862 5863 5864 5865

              dl_ch0_ext+=6;
              rxF_ext+=6;

            } else {
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
5866
              //printf("symbol %d, extract rb %d, => (%d,%d)\n",symbol,rb,*(short *)&dl_ch0[j],*(1+(short*)&dl_ch0[i]));
5867

5868
              for (i=0; i<12; i++) {
5869
                rxF_ext[i]=rxF[i];
5870
#ifdef DEBUG_DLSCH_DEMOD
5871
          printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5872 5873
#endif
              }
5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886

              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];
5887
#ifdef DEBUG_DLSCH_DEMOD
5888
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5889
#endif
5890 5891 5892 5893 5894 5895 5896 5897 5898 5899
                }
              }

              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];
5900
#ifdef DEBUG_DLSCH_DEMOD
5901
            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5902
#endif
5903 5904 5905 5906 5907 5908 5909 5910 5911 5912
                }
              }

              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];
5913 5914 5915
#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
5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931
                  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];
5932
#ifdef DEBUG_DLSCH_DEMOD
5933
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5934
#endif
5935 5936 5937 5938 5939 5940 5941
                  }
                }
                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++) {
5942
                  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){
5943 5944
                    rxF_ext[j]=rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
5945
#ifdef DEBUG_DLSCH_DEMOD
5946
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5947
#endif
5948 5949 5950 5951 5952 5953 5954 5955 5956 5957
                  }
                }
                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){
5958
                    rxF_ext[j]=rxF[i+6];
5959
                    dl_ch0_ext[j++]=dl_ch0[i+6];
5960
#ifdef DEBUG_DLSCH_DEMOD
5961
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5962
#endif
5963 5964 5965 5966 5967 5968 5969
                  }
                }
                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++) {
5970
                  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){
5971 5972
                    rxF_ext[j]=rxF[(i+6)];
                    dl_ch0_ext[j++]=dl_ch0[i+6];
5973
#ifdef DEBUG_DLSCH_DEMOD
5974
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5975
#endif
5976 5977 5978 5979 5980 5981 5982
                  }
                }
                dl_ch0_ext+=4;
                rxF_ext+=4;
              }

            } else {
5983
        for (i=0; i<12; i++){
5984 5985
                if (frame_parms->Ncp==0){
                  if (i!=uespec_nushift+uespec_poffset && i!=uespec_nushift+uespec_poffset+4 && i!=(uespec_nushift+uespec_poffset+8)%12){
5986 5987
              rxF_ext[j] = rxF[i];
                    dl_ch0_ext[j++]=dl_ch0[i];
5988
#ifdef DEBUG_DLSCH_DEMOD
5989
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5990
#endif
5991 5992
                  }
                } else{
5993 5994 5995
                  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];
5996
#ifdef DEBUG_DLSCH_DEMOD
5997
              printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
5998
#endif
5999 6000
                  }
                }
6001 6002
        }

6003
              dl_ch0_ext+=9-frame_parms->Ncp;
6004
              rxF_ext+=9-frame_parms->Ncp;
6005 6006

            }
6007

6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024
          }// pilots=0
        }

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

  _mm_empty();
  _m_empty();

  return(nb_rb/frame_parms->nb_antennas_rx);
}

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

Cedric Roux's avatar
Cedric Roux committed
6025
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)
6026
{
6027
  unsigned int nsymb = (ue->frame_parms.Ncp == 0) ? 14 : 12;
6028
  char fname[32],vname[32];
6029
  int N_RB_DL=ue->frame_parms.N_RB_DL;
6030 6031 6032

  sprintf(fname,"dlsch%d_rxF_r%d_ext0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_ext0",eNB_id,round);
6033
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);
6034

6035
  if (ue->frame_parms.nb_antennas_rx >1) {
6036 6037
    sprintf(fname,"dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_ext1",eNB_id,round);
6038
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
6039 6040 6041 6042
  }

  sprintf(fname,"dlsch%d_ch_r%d_ext00.m",eNB_id,round);
  sprintf(vname,"dl%d_ch_r%d_ext00",eNB_id,round);
6043
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
6044

6045
  if (ue->transmission_mode[eNB_id]==7){
6046 6047
    sprintf(fname,"dlsch%d_bf_ch_r%d.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d",eNB_id,round);
6048
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_bf_ch_estimates[0],512*nsymb,1,1);
6049 6050 6051 6052
    //write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_bf_ch_estimates[0],512,1,1);

    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);
6053
    write_output(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);
6054 6055
  }

6056
  if (ue->frame_parms.nb_antennas_rx == 2) {
6057 6058
    sprintf(fname,"dlsch%d_ch_r%d_ext01.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext01",eNB_id,round);
6059
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
6060 6061
  }

6062
  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
6063 6064
    sprintf(fname,"dlsch%d_ch_r%d_ext10.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext10",eNB_id,round);
6065
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
6066

6067
    if (ue->frame_parms.nb_antennas_rx == 2) {
6068 6069
      sprintf(fname,"dlsch%d_ch_r%d_ext11.m",eNB_id,round);
      sprintf(vname,"dl%d_ch_r%d_ext11",eNB_id,round);
6070
      write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
6071 6072 6073 6074 6075
    }
  }

  sprintf(fname,"dlsch%d_rxF_r%d_uespec0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_uespec0",eNB_id,round);
6076
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_uespec_pilots[0],12*N_RB_DL,1,1);
6077

6078
  /*
6079 6080 6081
    write_output("dlsch%d_ch_ext01.m","dl01_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
    write_output("dlsch%d_ch_ext10.m","dl10_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
    write_output("dlsch%d_ch_ext11.m","dl11_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
6082
  */
Raymond Knopp's avatar
Raymond Knopp committed
6083 6084
  sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
  sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);
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  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_rho_ext[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
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  sprintf(fname,"dlsch%d_r%d_rho2.m",eNB_id,round);
  sprintf(vname,"dl_rho2_r%d_%d",eNB_id,round);
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  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_rho2_ext[0],12*N_RB_DL*nsymb,1,1);
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  sprintf(fname,"dlsch%d_rxF_r%d_comp0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_comp0",eNB_id,round);
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  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
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  if (ue->frame_parms.nb_antenna_ports_eNB == 2) {
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    sprintf(fname,"dlsch%d_rxF_r%d_comp1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_comp1",eNB_id,round);
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    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->rxdataF_comp1[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
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  }

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  sprintf(fname,"dlsch%d_rxF_r%d_llr.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_llr",eNB_id,round);
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  write_output(fname,vname, ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->llr[0],coded_bits_per_codeword[0],1,0);
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  sprintf(fname,"dlsch%d_r%d_mag1.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag1",eNB_id,round);
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  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[subframe]][eNB_id]->dl_ch_mag0[0],12*N_RB_DL*nsymb,1,1);
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  sprintf(fname,"dlsch%d_r%d_mag2.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag2",eNB_id,round);
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  write_output(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