dlsch_demodulation.c 178 KB
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/*******************************************************************************
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    OpenAirInterface
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    Copyright(c) 1999 - 2014 Eurecom
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    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
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    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
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   see <http://www.gnu.org/licenses/>.
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  Contact Information
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  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
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  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
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  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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*******************************************************************************/
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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
 * \author R. Knopp, F. Kaltenberger,A. Bhamri, S. Aubert
 * \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
 */

#include "PHY/defs.h"
#include "PHY/extern.h"
#include "defs.h"
#include "extern.h"
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#include "PHY/sse_intrin.h"
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#ifndef USER_MODE
#define NOCYGWIN_STATIC static
#else
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#define NOCYGWIN_STATIC
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#endif

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//#undef LOG_D
//#define LOG_D LOG_I

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//#define DEBUG_PHY 1
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//#define DEBUG_DLSCH_DEMOD 1
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int avg[4]; 
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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;
/*
//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 *phy_vars_ue,
             PDSCH_t type,
             unsigned char eNB_id,
             unsigned char eNB_id_i, //if this == phy_vars_ue->n_connected_eNB, we assume MU interference
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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 *lte_ue_common_vars  = &phy_vars_ue->lte_ue_common_vars;
  LTE_UE_PDSCH **lte_ue_pdsch_vars;
  LTE_DL_FRAME_PARMS *frame_parms    = &phy_vars_ue->lte_frame_parms;
  PHY_MEASUREMENTS *phy_measurements = &phy_vars_ue->PHY_measurements;
  LTE_UE_DLSCH_t   **dlsch_ue;

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  unsigned char aatx,aarx;    
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  unsigned short nb_rb, round;
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  int avgs, rb;  
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 LTE_DL_UE_HARQ_t *dlsch0_harq,*dlsch1_harq = 0;
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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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  switch (type) {
  case SI_PDSCH:
    lte_ue_pdsch_vars = &phy_vars_ue->lte_ue_pdsch_vars_SI[eNB_id];
    dlsch_ue          = &phy_vars_ue->dlsch_ue_SI[eNB_id];
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    dlsch0_harq       = dlsch_ue[0]->harq_processes[harq_pid];
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    break;
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  case RA_PDSCH:
    lte_ue_pdsch_vars = &phy_vars_ue->lte_ue_pdsch_vars_ra[eNB_id];
    dlsch_ue          = &phy_vars_ue->dlsch_ue_ra[eNB_id];
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    dlsch0_harq       = dlsch_ue[0]->harq_processes[harq_pid];
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    break;
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  case PDSCH:
    lte_ue_pdsch_vars = &phy_vars_ue->lte_ue_pdsch_vars[eNB_id];
    dlsch_ue          = phy_vars_ue->dlsch_ue[eNB_id];
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    dlsch0_harq       = dlsch_ue[0]->harq_processes[harq_pid];
    dlsch1_harq       = dlsch_ue[1]->harq_processes[harq_pid];
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    break;

  default:
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    LOG_E(PHY,"[UE %d][FATAL] Frame %d subframe %d: Unknown PDSCH format %d\n",phy_vars_ue->frame_rx,subframe,type);
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    return(-1);
    break;
  }
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  DevAssert(dlsch0_harq);
  round = dlsch0_harq->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 (!lte_ue_common_vars) {
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    LOG_W(PHY,"dlsch_demodulation.c: Null lte_ue_common_vars\n");
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    return(-1);
  }

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

  if (!lte_ue_pdsch_vars) {
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    LOG_W(PHY,"dlsch_demodulation.c: Null lte_ue_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 lte_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);
    }
  }

  //printf("rx_pdsch: harq_pid=%d, round=%d\n",harq_pid,round);

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  if (frame_parms->nb_antennas_tx_eNB>1) {
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//#ifdef DEBUG_DLSCH_MOD
 //printf("dlsch: using pmi %x (%p), rb_alloc %x\n",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),dlsch_ue[0],dlsch0_harq->rb_alloc_even[0]);
//#endif
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    nb_rb = dlsch_extract_rbs_dual(lte_ue_common_vars->rxdataF,
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                                   lte_ue_common_vars->dl_ch_estimates[eNB_id],
                                   lte_ue_pdsch_vars[eNB_id]->rxdataF_ext,
                                   lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                   dlsch0_harq->pmi_alloc,
                                   lte_ue_pdsch_vars[eNB_id]->pmi_ext,
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                                   rballoc,
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                                   symbol,
                                   subframe,
                                   phy_vars_ue->high_speed_flag,
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                                   frame_parms,
				   dlsch0_harq->mimo_mode);
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   if (rx_type==rx_IC_single_stream) {
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      if (eNB_id_i<phy_vars_ue->n_connected_eNB) // we are in TM5
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       nb_rb = dlsch_extract_rbs_dual(lte_ue_common_vars->rxdataF,
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                                       lte_ue_common_vars->dl_ch_estimates[eNB_id_i],
                                       lte_ue_pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                       dlsch0_harq->pmi_alloc,
                                       lte_ue_pdsch_vars[eNB_id_i]->pmi_ext,
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                                       rballoc,
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                                       symbol,
                                       subframe,
                                       phy_vars_ue->high_speed_flag,
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                                       frame_parms,
				       dlsch0_harq->mimo_mode);
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     else 
       nb_rb = dlsch_extract_rbs_dual(lte_ue_common_vars->rxdataF,
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                                       lte_ue_common_vars->dl_ch_estimates[eNB_id],
                                       lte_ue_pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                       dlsch0_harq->pmi_alloc,
                                       lte_ue_pdsch_vars[eNB_id_i]->pmi_ext,
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                                       rballoc,
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                                       symbol,
                                       subframe,
                                       phy_vars_ue->high_speed_flag,
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                                       frame_parms,
				       dlsch0_harq->mimo_mode);
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    }
  } // if n_tx>1
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  else {
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    nb_rb = dlsch_extract_rbs_single(lte_ue_common_vars->rxdataF,
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                                     lte_ue_common_vars->dl_ch_estimates[eNB_id],
                                     lte_ue_pdsch_vars[eNB_id]->rxdataF_ext,
                                     lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                     dlsch0_harq->pmi_alloc,
                                     lte_ue_pdsch_vars[eNB_id]->pmi_ext,
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                                     rballoc,
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                                     symbol,
                                     subframe,
                                     phy_vars_ue->high_speed_flag,
                                     frame_parms);
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   if (rx_type==rx_IC_single_stream) {
     if (eNB_id_i<phy_vars_ue->n_connected_eNB)
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        nb_rb = dlsch_extract_rbs_single(lte_ue_common_vars->rxdataF,
                                         lte_ue_common_vars->dl_ch_estimates[eNB_id_i],
                                         lte_ue_pdsch_vars[eNB_id_i]->rxdataF_ext,
                                         lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,    
                                         dlsch0_harq->pmi_alloc,
                                         lte_ue_pdsch_vars[eNB_id_i]->pmi_ext,
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                                         rballoc,
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                                         symbol,
                                         subframe,
                                         phy_vars_ue->high_speed_flag,
                                         frame_parms);
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      else 
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        nb_rb = dlsch_extract_rbs_single(lte_ue_common_vars->rxdataF,
                                         lte_ue_common_vars->dl_ch_estimates[eNB_id],
                                         lte_ue_pdsch_vars[eNB_id_i]->rxdataF_ext,
                                         lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,    
                                         dlsch0_harq->pmi_alloc,
                                         lte_ue_pdsch_vars[eNB_id_i]->pmi_ext,
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                                         rballoc,
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                                         symbol,
                                         subframe,
                                         phy_vars_ue->high_speed_flag,
                                         frame_parms);
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    }
  } //else n_tx>1
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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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  /*
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  // DL power control: Scaling of Channel estimates for PDSCH
  dlsch_scale_channel(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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  frame_parms,
  dlsch_ue,
  symbol,
  nb_rb);
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  */
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  if (first_symbol_flag==1) {
    dlsch_channel_level(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                        frame_parms,
                        avg,
                        symbol,
                        nb_rb);
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#ifdef DEBUG_PHY
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    LOG_D(PHY,"[DLSCH] avg[0] %d\n",avg[0]);
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#endif
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    // the channel gain should be the effective gain of precoding + channel
    // however lets be more conservative and set maxh = nb_tx*nb_rx*max(h_i)
    // in case of precoding we add an additional factor of two for the precoding gain
    avgs = 0;
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    for (aatx=0;aatx<frame_parms->nb_antennas_tx_eNB;aatx++)
      for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
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        avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
    //  avgs = cmax(avgs,avg[(aarx<<1)+aatx]);
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   lte_ue_pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2);
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    // + log2_approx(frame_parms->nb_antennas_tx_eNB-1) //-1 because log2_approx counts the number of bits
    //      + log2_approx(frame_parms->nb_antennas_rx-1);
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    if ((dlsch0_harq->mimo_mode>=UNIFORM_PRECODING11) &&
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        (dlsch0_harq->mimo_mode< DUALSTREAM_UNIFORM_PRECODING1) &&
        (dlsch0_harq->dl_power_off==1)) // we are in TM 6
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      lte_ue_pdsch_vars[eNB_id]->log2_maxh++;

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    //printf("log2_maxh =%d\n",lte_ue_pdsch_vars[eNB_id]->log2_maxh);
    
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    // this version here applies the factor .5 also to the extra terms. however, it does not work so well as the one above
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    /* K = Nb_rx         in TM1
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       Nb_tx*Nb_rx   in TM2,4,5
       Nb_tx^2*Nb_rx in TM6 */
    /*
      K = frame_parms->nb_antennas_rx*frame_parms->nb_antennas_tx_eNB; //that also covers TM1 since Nb_tx=1
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      if ((dlsch0_harq->mimo_mode>=UNIFORM_PRECODING11) &&
      (dlsch0_harq->mimo_mode< DUALSTREAM_UNIFORM_PRECODING1) &&
      (dlsch0_harq->dl_power_off==1)) // we are in TM 6
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      K *= frame_parms->nb_antennas_tx_eNB;

      lte_ue_pdsch_vars[eNB_id]->log2_maxh = (log2_approx(K*avgs)/2);
    */

#ifdef DEBUG_PHY
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    LOG_D(PHY,"[DLSCH] log2_maxh = %d (%d,%d)\n",lte_ue_pdsch_vars[eNB_id]->log2_maxh,avg[0],avgs);
    LOG_D(PHY,"[DLSCH] mimo_mode = %d\n", dlsch0_harq->mimo_mode);
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#endif
  }
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  aatx = frame_parms->nb_antennas_tx_eNB;
  aarx = frame_parms->nb_antennas_rx;

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  if (dlsch0_harq->mimo_mode<LARGE_CDD) {// SISO or ALAMOUTI
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    	dlsch_channel_compensation(lte_ue_pdsch_vars[eNB_id]->rxdataF_ext,
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                               lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                               lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                               lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
                               lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                               (aatx>1) ? lte_ue_pdsch_vars[eNB_id]->rho : NULL,
                               frame_parms,
                               symbol,
                               first_symbol_flag,
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                               dlsch0_harq->Qm,
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                               nb_rb,
                               lte_ue_pdsch_vars[eNB_id]->log2_maxh,
                               phy_measurements); // log2_maxh+I0_shift
 /*
 if (symbol == 5) {
     write_output("rxF_comp_d.m","rxF_c_d",&lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
 } */
    if ((rx_type==rx_IC_single_stream) && 
        (eNB_id_i<phy_vars_ue->n_connected_eNB)) {
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	 dlsch_channel_compensation(lte_ue_pdsch_vars[eNB_id_i]->rxdataF_ext,
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                                 lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 lte_ue_pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                 lte_ue_pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                 lte_ue_pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                 (aatx>1) ? lte_ue_pdsch_vars[eNB_id_i]->rho : NULL,
                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 i_mod,
                                 nb_rb,
                                 lte_ue_pdsch_vars[eNB_id]->log2_maxh,
                                 phy_measurements); // log2_maxh+I0_shift
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#ifdef DEBUG_PHY
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      if (symbol == 5) {
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        write_output("rxF_comp_d.m","rxF_c_d",&lte_ue_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",&lte_ue_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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      }
#endif 
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     // compute correlation between signal and interference channels
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      dlsch_dual_stream_correlation(frame_parms,
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                                    symbol,
                                    nb_rb,
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                    lte_ue_pdsch_vars[eNB_id]->log2_maxh);
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    }
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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))){  // TM3 or TM4
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    //   LOG_I(PHY,"Running PDSCH RX for TM3\n");
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    if (frame_parms->nb_antennas_tx_eNB == 2) {
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	 // scaling interfering channel (following for TM56)
	dlsch_scale_channel(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
			    frame_parms,
			    dlsch_ue,
			    symbol,
			    nb_rb);
	
	        
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      if (first_symbol_flag==1) {
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        // effective channel of desired user is always stronger than interfering eff. channel
        dlsch_channel_level_TM34(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext, 
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                                 frame_parms,
				 lte_ue_pdsch_vars[eNB_id]->pmi_ext,
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                                 avg,
				 symbol,
				 nb_rb,
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                                 dlsch0_harq->mimo_mode);
	    
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	if (rx_type>rx_standard) {
	  //	LOG_D(PHY,"llr_offset = %d\n",offset_mumimo_llr_drange[dlsch0_harq->mcs][(dlsch1_harq->mcs>>1)-1]);
	  lte_ue_pdsch_vars[eNB_id]->log2_maxh = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(get_Qm(dlsch1_harq->mcs)>>1)-1];
	}
	else 
	lte_ue_pdsch_vars[eNB_id]->log2_maxh = log2_approx(avg[0])/2;
      }
    
      dlsch_channel_compensation_TM34(frame_parms, 
                                     lte_ue_pdsch_vars[eNB_id],
                                     phy_measurements, 
                                     eNB_id, 
                                     symbol, 
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                                     dlsch0_harq->Qm, 
                                     dlsch1_harq->Qm,
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                                     harq_pid,
                                     dlsch0_harq->round,
                                     dlsch0_harq->mimo_mode,
                                     nb_rb, 
                                     lte_ue_pdsch_vars[eNB_id]->log2_maxh); 
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   	/*   
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       if (symbol == 5) {
   
     write_output("rxF_comp_d00.m","rxF_c_d00",&lte_ue_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",&lte_ue_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",&lte_ue_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",&lte_ue_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,
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                                    symbol,
                                    nb_rb,
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    &(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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			   	    lte_ue_pdsch_vars[eNB_id]->log2_maxh);
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      //to be optimized (just take complex conjugate)
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      dlsch_dual_stream_correlation(frame_parms,
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                                    symbol,
                                    nb_rb,
                                    &(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
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                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
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				    lte_ue_pdsch_vars[eNB_id]->log2_maxh);
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      //printf("TM3 log2_maxh : %d\n",lte_ue_pdsch_vars[eNB_id]->log2_maxh);

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   }
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      else {
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     LOG_E(PHY, "only 2 tx antennas supported for TM3\n");
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      return(-1);
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    }
  }
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  else if (dlsch0_harq->mimo_mode<DUALSTREAM_UNIFORM_PRECODING1) {// single-layer precoding (TM5, TM6)
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   //    printf("Channel compensation for precoding\n");
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    if ((rx_type==rx_IC_single_stream) && (eNB_id_i==phy_vars_ue->n_connected_eNB)) {  // TM5 two-user
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      // Scale the channel estimates for interfering stream

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      dlsch_scale_channel(lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
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                          frame_parms,
                          dlsch_ue,
                          symbol,
                          nb_rb);     
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      /* compute new log2_maxh for effective channel */
      if (first_symbol_flag==1) {
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        // effective channel of desired user is always stronger than interfering eff. channel
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       dlsch_channel_level_TM56(lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
				frame_parms,
				lte_ue_pdsch_vars[eNB_id]->pmi_ext,
				avg,
				symbol,
				nb_rb);
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        //    LOG_D(PHY,"llr_offset = %d\n",offset_mumimo_llr_drange[dlsch0_harq->mcs][(i_mod>>1)-1]);
        avg[0] = log2_approx(avg[0]) - 13 + offset_mumimo_llr_drange[dlsch0_harq->mcs][(i_mod>>1)-1];
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        lte_ue_pdsch_vars[eNB_id]->log2_maxh = cmax(avg[0],0);
        //printf("log1_maxh =%d\n",lte_ue_pdsch_vars[eNB_id]->log2_maxh);
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      }

      dlsch_channel_compensation_TM56(lte_ue_pdsch_vars[eNB_id]->rxdataF_ext,
                                      lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                                      lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
                                      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                                      lte_ue_pdsch_vars[eNB_id]->pmi_ext,
                                      frame_parms,
                                      phy_measurements,
                                      eNB_id,
                                      symbol,
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                                      dlsch0_harq->Qm,
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                                      nb_rb,
                                      lte_ue_pdsch_vars[eNB_id]->log2_maxh,
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                                      dlsch0_harq->dl_power_off);
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      // if interference source is MU interference, assume opposite precoder was used at eNB

      // calculate opposite PMI
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      for (rb=0; rb<nb_rb; rb++) {
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        switch(lte_ue_pdsch_vars[eNB_id]->pmi_ext[rb]) {
        case 0:
          lte_ue_pdsch_vars[eNB_id_i]->pmi_ext[rb]=1;
          break;
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       case 1:
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          lte_ue_pdsch_vars[eNB_id_i]->pmi_ext[rb]=0;
          break;
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       case 2:
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          lte_ue_pdsch_vars[eNB_id_i]->pmi_ext[rb]=3;
          break;
        case 3:
          lte_ue_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",lte_ue_pdsch_vars[eNB_id]->pmi_ext[rb],lte_ue_pdsch_vars[eNB_id_i]->pmi_ext[rb]);

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      }

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      dlsch_channel_compensation_TM56(lte_ue_pdsch_vars[eNB_id_i]->rxdataF_ext,
                                      lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                      lte_ue_pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                      lte_ue_pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                      lte_ue_pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                      lte_ue_pdsch_vars[eNB_id_i]->pmi_ext,
                                      frame_parms,
                                      phy_measurements,
                                      eNB_id_i,
                                      symbol,
                                      i_mod,
                                      nb_rb,
                                      lte_ue_pdsch_vars[eNB_id]->log2_maxh,
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                                      dlsch0_harq->dl_power_off);
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#ifdef DEBUG_PHY
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      if (symbol==5) {
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        write_output("rxF_comp_d.m","rxF_c_d",&lte_ue_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",&lte_ue_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, 
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext, 
                                    lte_ue_pdsch_vars[eNB_id_i]->dl_ch_estimates_ext, 
                                    lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round], 
                                    lte_ue_pdsch_vars[eNB_id]->log2_maxh);
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    } else {
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      dlsch_channel_compensation_TM56(lte_ue_pdsch_vars[eNB_id]->rxdataF_ext,
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                                      lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                                      lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
                                      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                                      lte_ue_pdsch_vars[eNB_id]->pmi_ext,
                                      frame_parms,
                                      phy_measurements,
                                      eNB_id,
                                      symbol,
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                                      dlsch0_harq->Qm,
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                                      nb_rb,
                                      lte_ue_pdsch_vars[eNB_id]->log2_maxh,
                                      1);
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    }
  }

  //  printf("MRC\n");
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  if (frame_parms->nb_antennas_rx > 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))){  // TM3 or TM4
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      if (frame_parms->nb_antennas_tx_eNB == 2) {
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	dlsch_detection_mrc_TM34(frame_parms, 
                                 lte_ue_pdsch_vars[eNB_id],
				 harq_pid,
                                 dlsch0_harq->round,
				 symbol,
				 nb_rb,
				 1);
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      }
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    } else {

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      dlsch_detection_mrc(frame_parms,
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                          lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                          lte_ue_pdsch_vars[eNB_id_i]->rxdataF_comp0,
                          lte_ue_pdsch_vars[eNB_id]->rho,
                          lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                          lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                          lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
                          lte_ue_pdsch_vars[eNB_id_i]->dl_ch_mag0,
                          lte_ue_pdsch_vars[eNB_id_i]->dl_ch_magb0,
                          symbol,
                          nb_rb,
                          rx_type==rx_IC_single_stream); 
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    }
  }
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  //  printf("Combining");
  if ((dlsch0_harq->mimo_mode == SISO) ||
      ((dlsch0_harq->mimo_mode >= UNIFORM_PRECODING11) &&
       (dlsch0_harq->mimo_mode <= PUSCH_PRECODING0))) {

    /*
      dlsch_siso(frame_parms,
      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp,
      lte_ue_pdsch_vars[eNB_id_i]->rxdataF_comp,
      symbol,
      nb_rb);
    */
  } else if (dlsch0_harq->mimo_mode == ALAMOUTI) {

    dlsch_alamouti(frame_parms,
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                   lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                   lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                   lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
                   symbol,
                   nb_rb);
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  } 
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  //    printf("LLR");
  if ((dlsch0_harq->mimo_mode == LARGE_CDD) || 
      ((dlsch0_harq->mimo_mode >=DUALSTREAM_UNIFORM_PRECODING1) && 
       (dlsch0_harq->mimo_mode <=DUALSTREAM_PUSCH_PRECODING)))  {
    rxdataF_comp_ptr = lte_ue_pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round];
    dl_ch_mag_ptr = lte_ue_pdsch_vars[eNB_id]->dl_ch_mag1;
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  }
  else {
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    rxdataF_comp_ptr = lte_ue_pdsch_vars[eNB_id_i]->rxdataF_comp0;
    dl_ch_mag_ptr = lte_ue_pdsch_vars[eNB_id_i]->dl_ch_mag0;
    //i_mod should have been passed as a parameter
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  }
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  switch (dlsch0_harq->Qm) {
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  case 2 : 
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    if (rx_type==rx_standard) {
        dlsch_qpsk_llr(frame_parms,
                       lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                       lte_ue_pdsch_vars[eNB_id]->llr[0],
                       symbol,first_symbol_flag,nb_rb,
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                       adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
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                       lte_ue_pdsch_vars[eNB_id]->llr128);
    }
      else if ((rx_type==rx_IC_single_stream) || (rx_type==rx_IC_dual_stream)) {
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        if (dlsch1_harq->Qm == 2) {
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          dlsch_qpsk_qpsk_llr(frame_parms,
                              lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,
                              lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                              lte_ue_pdsch_vars[eNB_id]->llr[0],
                              symbol,first_symbol_flag,nb_rb,
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                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
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                              lte_ue_pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
            dlsch_qpsk_qpsk_llr(frame_parms,
                                rxdataF_comp_ptr,
                                lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                                lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                lte_ue_pdsch_vars[eNB_id]->llr[1],
                                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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                                lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
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        else if (dlsch1_harq->Qm == 4) { 
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          dlsch_qpsk_16qam_llr(frame_parms,
                               lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
                               lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                               lte_ue_pdsch_vars[eNB_id]->llr[0],
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
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                               lte_ue_pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
            dlsch_16qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
                                 lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                 dl_ch_mag_ptr,
                                 lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                 lte_ue_pdsch_vars[eNB_id]->llr[1],
                                 symbol,first_symbol_flag,nb_rb,
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                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
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                                 lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
        else {
          dlsch_qpsk_64qam_llr(frame_parms,
                               lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
                               lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                               lte_ue_pdsch_vars[eNB_id]->llr[0],
                               symbol,first_symbol_flag,nb_rb,
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                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,subframe,symbol),
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                               lte_ue_pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
            dlsch_64qam_qpsk_llr(frame_parms,
                                 rxdataF_comp_ptr,
                                 lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                 dl_ch_mag_ptr,
                                 lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                 lte_ue_pdsch_vars[eNB_id]->llr[1],
                                 symbol,first_symbol_flag,nb_rb,
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                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
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                                 lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }          
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      }
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    break;
  case 4 :
    if (rx_type==rx_standard) {
      dlsch_16qam_llr(frame_parms,
                      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                      lte_ue_pdsch_vars[eNB_id]->llr[0],
                      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                      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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                      lte_ue_pdsch_vars[eNB_id]->llr128);
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    }
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    else if ((rx_type==rx_IC_single_stream) || (rx_type==rx_IC_dual_stream)) {
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      if (dlsch1_harq->Qm == 2) {
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        dlsch_16qam_qpsk_llr(frame_parms,
                             lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                             rxdataF_comp_ptr,//i
                             lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                             lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                             lte_ue_pdsch_vars[eNB_id]->llr[0],
                             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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                             lte_ue_pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
          dlsch_qpsk_16qam_llr(frame_parms,
                               rxdataF_comp_ptr,
                               lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,//i
                               lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                               lte_ue_pdsch_vars[eNB_id]->llr[1],
                               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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                               lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
        }
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      }
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      else if (dlsch1_harq->Qm == 4) {
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	dlsch_16qam_16qam_llr(frame_parms,
			      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
			      rxdataF_comp_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
			      dl_ch_mag_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
			      lte_ue_pdsch_vars[eNB_id]->llr[0],
			      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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			      lte_ue_pdsch_vars[eNB_id]->llr128);
	if (rx_type==rx_IC_dual_stream) {
	  dlsch_16qam_16qam_llr(frame_parms,
				rxdataF_comp_ptr,
				lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
				dl_ch_mag_ptr,
				lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,//i
				lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
				lte_ue_pdsch_vars[eNB_id]->llr[1],
				symbol,first_symbol_flag,nb_rb,
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				adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
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				lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
	}
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      }
      else {
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	dlsch_16qam_64qam_llr(frame_parms,
			      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
			      rxdataF_comp_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
			      dl_ch_mag_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
			      lte_ue_pdsch_vars[eNB_id]->llr[0],
			      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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			      lte_ue_pdsch_vars[eNB_id]->llr128);
	if (rx_type==rx_IC_dual_stream) {
	  dlsch_64qam_16qam_llr(frame_parms,
				rxdataF_comp_ptr,
				lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
				dl_ch_mag_ptr,
				lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
				lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
				lte_ue_pdsch_vars[eNB_id]->llr[1],
				symbol,first_symbol_flag,nb_rb,
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				adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
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				lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
	}
      }
    }
    break;
  case 6 :
    if (rx_type==rx_standard) {
      dlsch_64qam_llr(frame_parms,
                      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
                      lte_ue_pdsch_vars[eNB_id]->llr[0],
                      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
                      lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0,
                      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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                      lte_ue_pdsch_vars[eNB_id]->llr128);
    }
    else if ((rx_type==rx_IC_single_stream) || (rx_type==rx_IC_dual_stream)) {
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      if (dlsch1_harq->Qm == 2) {              
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	dlsch_64qam_qpsk_llr(frame_parms,
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			     lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
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			     rxdataF_comp_ptr,//i
			     lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
			     lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
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			     lte_ue_pdsch_vars[eNB_id]->llr[0],
			     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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			     lte_ue_pdsch_vars[eNB_id]->llr128);
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	if (rx_type==rx_IC_dual_stream) {
	  dlsch_qpsk_64qam_llr(frame_parms,
			       rxdataF_comp_ptr,
			       lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
			       lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
			       lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
			       lte_ue_pdsch_vars[eNB_id]->llr[1],
			       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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			       lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
	}
      }
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      else if (dlsch1_harq->Qm == 4) {
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	dlsch_64qam_16qam_llr(frame_parms,
			      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
			      rxdataF_comp_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
			      dl_ch_mag_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
			      lte_ue_pdsch_vars[eNB_id]->llr[0],
			      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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			      lte_ue_pdsch_vars[eNB_id]->llr128);
	if (rx_type==rx_IC_dual_stream) {
	  dlsch_16qam_64qam_llr(frame_parms,
				rxdataF_comp_ptr,
				lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
				dl_ch_mag_ptr,
				lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,//i
				lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
				lte_ue_pdsch_vars[eNB_id]->llr[1],
				symbol,first_symbol_flag,nb_rb,
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				adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
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				lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
	}
      }
      else {	  
	dlsch_64qam_64qam_llr(frame_parms,
			      lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,
			      rxdataF_comp_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,
			      dl_ch_mag_ptr,//i
			      lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
			      lte_ue_pdsch_vars[eNB_id]->llr[0],
			      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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			      lte_ue_pdsch_vars[eNB_id]->llr128);
	if (rx_type==rx_IC_dual_stream) {
	  dlsch_64qam_64qam_llr(frame_parms,
				rxdataF_comp_ptr,
				lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0,//i
				dl_ch_mag_ptr,
				lte_ue_pdsch_vars[eNB_id]->dl_ch_mag0,//i
				lte_ue_pdsch_vars[eNB_id]->dl_ch_rho2_ext,
				lte_ue_pdsch_vars[eNB_id]->llr[1],
				symbol,first_symbol_flag,nb_rb,
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				adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
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				lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
	}
      }
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    }
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    break;
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  default:
    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
    return(-1);
    break;
  }

  switch (get_Qm(dlsch1_harq->mcs)) {
  case 2 : 
    if (rx_type==rx_standard) {
        dlsch_qpsk_llr(frame_parms,
                       rxdataF_comp_ptr,
                       lte_ue_pdsch_vars[eNB_id]->llr[1],
                       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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                       lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
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    }
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    break;
  case 4:
    if (rx_type==rx_standard) {
      dlsch_16qam_llr(frame_parms,
                      rxdataF_comp_ptr,
                      lte_ue_pdsch_vars[eNB_id]->llr[1],
                      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag1,
                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,subframe,symbol),
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                      lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
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    }
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    break;
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  case 6 :
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    if (rx_type==rx_standard) {
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      dlsch_64qam_llr(frame_parms,
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                      rxdataF_comp_ptr,
                      lte_ue_pdsch_vars[eNB_id]->llr[1],
                      lte_ue_pdsch_vars[eNB_id]->dl_ch_mag1,
                      lte_ue_pdsch_vars[eNB_id]->dl_ch_magb1,
                      symbol,first_symbol_flag,nb_rb,
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                      adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,subframe,symbol),
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                      lte_ue_pdsch_vars[eNB_id]->llr128_2ndstream);
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  }

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    break;
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  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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  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,
                                PHY_MEASUREMENTS *phy_measurements) {

  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))) {
      
    if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size    
      nb_rb=1+(5*nb_rb/6);
    else  
      pilots=1;    
  }

  for (aatx=0;aatx<frame_parms->nb_antennas_tx_eNB;aatx++) {
    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) {
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      QAM_amp128  = _mm_set1_epi16(QAM64_n1); 
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      QAM_amp128b = _mm_set1_epi16(QAM64_n2);
    }
    
    //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);

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

      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];


      for (rb=0;rb<nb_rb;rb++) {
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        if (mod_order>2) {  
          // get channel amplitude if not QPSK
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          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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          mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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          mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
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          // store channel magnitude here in a new field of dlsch
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          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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          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);
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          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);
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            dl_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
            dl_ch_mag128b[2] = dl_ch_mag128[2];
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            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);          
          }
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          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);
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          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);
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          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);
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        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        //      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);
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        // 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);
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        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);        
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        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);
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          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);
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          dl_ch128+=3;
          dl_ch_mag128+=3;
          dl_ch_mag128b+=3;
          rxdataF128+=3;
          rxdataF_comp128+=3;
        }
        else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
          dl_ch128+=2;
          dl_ch_mag128+=2;
          dl_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }
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      }
    }
  }
  
  if (rho) {
      
      
    for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) {
      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];
          
      for (rb=0;rb<nb_rb;rb++) {
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        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128_2[0]);
        //      print_ints("re",&mmtmpD0);
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        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        //      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);
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        //print_shorts("rx:",dl_ch128_2);
        //print_shorts("ch:",dl_ch128);
        //print_shorts("pack:",rho128);
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        // 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);
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        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);
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        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);
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        dl_ch128+=3;
        dl_ch128_2+=3;
        rho128+=3;
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      } 
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      if (first_symbol_flag==1) {
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        phy_measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*frame_parms->N_RB_DL*12],rb*12);
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      }           
    }      
  }

  _mm_empty();
  _m_empty();
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}  
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#if defined(__x86_64__) || defined(__i386__)

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

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

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

  ch0[0] = _mm_mulhi_epi16(ch0[0],amp);
  ch0[0] = _mm_slli_epi16(ch0[0],1);
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  _mm_empty();
  _m_empty();
}
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#elif defined(__arm__)
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void prec2A_TM56_128(unsigned char pmi,__m128i *ch0,__m128i *ch1) {
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  __m128i amp;
  amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);

  switch (pmi) {
        
  case 0 :   // +1 +1
    //    print_shorts("phase 0 :ch0",ch0);
    //    print_shorts("phase 0 :ch1",ch1);
    ch0[0] = _mm_adds_epi16(ch0[0],ch1[0]);   
    break;
  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;
  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]);
        
    break;   // +1 -j
  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);
    
  _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) {
  
  //  __m128i amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
  
  __m128i tmp0,tmp1;
  

  //  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);


  //  print_shorts("prec2A_TM3 ch0 (mid):",&tmp0);
  //  print_shorts("prec2A_TM3 ch1 (mid):",ch1);


  ch0[0] = _mm_srai_epi16(ch0[0],1);
  ch1[0] = _mm_srai_epi16(ch1[0],1);

  //  print_shorts("prec2A_TM3 ch0 (after):",ch0);
  //  print_shorts("prec2A_TM3 ch1 (after):",ch1);
    
  _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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  // __m128i amp;
  // amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);
  __m128i tmp0,tmp1;
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  //print_shorts("prec2A_TM4 ch0 (before):",ch0);
  //print_shorts("prec2A_TM4 ch1 (before):",ch1);

  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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  }
  else {
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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);
    ch1[0] = _mm_subs_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);

  //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);

  //print_shorts("prec2A_TM4 ch0 (end):",ch0);
  //print_shorts("prec2A_TM4 ch1 (end):",ch1);
  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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  _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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}

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,
                                     PHY_MEASUREMENTS *phy_measurements,
                                     int eNB_id,
                                     unsigned char symbol,
                                     unsigned char mod_order,
                                     unsigned short nb_rb,
                                     unsigned char output_shift,
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                                     unsigned char dl_power_off)
{

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

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

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

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

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

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

      if (mod_order>2) {  
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        // 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);
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        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
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        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]);

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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);
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        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
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          dl_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag128b[2] = dl_ch_mag128[2];
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          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);    
        }
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        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);
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        //print_shorts("dl_ch_mag128b[0]=",&dl_ch_mag128b[0]);
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        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);
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        if (pilots==0) {
          dl_ch_mag128b[2] = _mm_mulhi_epi16(dl_ch_mag128b[2],QAM_amp128b);
          dl_ch_mag128b[2] = _mm_slli_epi16(dl_ch_mag128b[2],1);          
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        }
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      }

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

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      if (pilots==0) {
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        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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        rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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        //  print_shorts("rx:",rxdataF128+2);
        //  print_shorts("ch:",dl_ch128+2);
        //        print_shorts("pack:",rxdataF_comp128+2);

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

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

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  uint32_t rb,Nre;
  uint32_t aarx,symbol_mod,pilots=0;
  
  int16x4_t *dl_ch0_128,*dl_ch1_128,*rxdataF128;
  int16x8_t *dl_ch0_128b,*dl_ch1_128b;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4,*rxdataF_comp128;
  int16x8_t QAM_amp128,QAM_amp128b;
  
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  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);
  int32_t precoded_signal_strength=0;
  
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;  
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size
      { nb_rb=1+(5*nb_rb/6); }
    
    else
      { pilots=1; }
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  }
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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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  }
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  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    dl_ch0_128          = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch0_128b         = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128b         = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128        = (int16x8_t*)&dl_ch_mag[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch_mag128b       = (int16x8_t*)&dl_ch_magb[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF128          = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    rxdataF_comp128     = (int16x8_t*)&rxdataF_comp[aarx][symbol*frame_parms->N_RB_DL*12];
    
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    for (rb=0; rb<nb_rb; rb++) {
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#ifdef DEBUG_DLSCH_DEMOD
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      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_128b[0],&dl_ch1_128b[0]);
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[1],&dl_ch1_128b[1]);
      
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      if (pilots==0) {
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	prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128b[2],&dl_ch1_128b[2]);
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      }
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      if (mod_order>2) {
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	// get channel amplitude if not QPSK
	mmtmpD0 = vmull_s16(dl_ch0_128[0], dl_ch0_128[0]);
	// mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
	mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
	// mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
	mmtmpD1 = vmull_s16(dl_ch0_128[1], dl_ch0_128[1]);
	mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
	mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	// mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits 
	mmtmpD0 = vmull_s16(dl_ch0_128[2], dl_ch0_128[2]);
	mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
	mmtmpD1 = vmull_s16(dl_ch0_128[3], dl_ch0_128[3]);
	mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
	mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	if (pilots==0) {
	  mmtmpD0 = vmull_s16(dl_ch0_128[4], dl_ch0_128[4]);
	  mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
	  mmtmpD1 = vmull_s16(dl_ch0_128[5], dl_ch0_128[5]);
	  mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
	  mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	  
	  
	}
	
	dl_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b);
	dl_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b);
	dl_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
	dl_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);
	
	
	if (pilots==0) {
	  dl_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
	  dl_ch_mag128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp128);
	}
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      }
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      mmtmpD0 = vmull_s16(dl_ch0_128[0], rxdataF128[0]);
      //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_ch0_128[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_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
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      //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])]
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      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
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      //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])]
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      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
			     vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
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      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
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      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
      
      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)),
			     vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
      
      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)),
			     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] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
      
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      if (pilots==0) {
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	mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
	mmtmpD1 = vmull_s16(dl_ch0_128[5], rxdataF128[5]);
	mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
			       vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
	
	mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
	mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
	mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
			       vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
	
	
	mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
	mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
	rxdataF_comp128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	
	
	dl_ch0_128+=6;
	dl_ch1_128+=6;
	dl_ch_mag128+=3;
	dl_ch_mag128b+=3;
	rxdataF128+=6;
	rxdataF_comp128+=3;
	
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      } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
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	dl_ch0_128+=4;
	dl_ch1_128+=4;
	dl_ch_mag128+=2;
	dl_ch_mag128b+=2;
	rxdataF128+=4;
	rxdataF_comp128+=2;
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      }
    }
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1787
    Nre = (pilots==0) ? 12 : 8;
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    precoded_signal_strength += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
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						     (nb_rb*Nre))) - (phy_measurements->n0_power[aarx]));
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    // rx_antennas
  }
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  phy_measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength,phy_measurements->n0_power_tot);
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  //printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
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  //     phy_measurements->precoded_cqi_dB[eNB_id][0]);
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#endif 
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  _mm_empty();
  _m_empty();  
}    

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void dlsch_channel_compensation_TM34(LTE_DL_FRAME_PARMS *frame_parms,
                                    LTE_UE_PDSCH *lte_ue_pdsch_vars,
                                    PHY_MEASUREMENTS *phy_measurements,
                                    int eNB_id,
                                    unsigned char symbol,
                                    unsigned char mod_order0,
                                    unsigned char mod_order1,
                                    int harq_pid,
                                    int round,
                                    MIMO_mode_t mimo_mode,
                                    unsigned short nb_rb,
                                    unsigned char output_shift) {
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#if defined(__x86_64__) || defined(__i386__)

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  unsigned short rb,Nre;
  __m128i *dl_ch0_128,*dl_ch1_128,*dl_ch_mag0_128,*dl_ch_mag1_128,*dl_ch_mag0_128b,*dl_ch_mag1_128b,*rxdataF128,*rxdataF_comp0_128,*rxdataF_comp1_128;
  unsigned char aarx=0,symbol_mod,pilots=0;
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  int precoded_signal_strength0=0,precoded_signal_strength1=0;
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  int rx_power_correction;
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  int **rxdataF_ext           = lte_ue_pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = lte_ue_pdsch_vars->dl_ch_estimates_ext;
  int **dl_ch_mag0            = lte_ue_pdsch_vars->dl_ch_mag0;
  int **dl_ch_mag1            = lte_ue_pdsch_vars->dl_ch_mag1;
  int **dl_ch_magb0           = lte_ue_pdsch_vars->dl_ch_magb0;
  int **dl_ch_magb1           = lte_ue_pdsch_vars->dl_ch_magb1;
  int **rxdataF_comp0         = lte_ue_pdsch_vars->rxdataF_comp0;
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  int **rxdataF_comp1         = lte_ue_pdsch_vars->rxdataF_comp1[harq_pid][round];
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  unsigned char **pmi_ext     = lte_ue_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;   
    
  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp)))
    pilots=1;

  rx_power_correction = 1;
    
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 // printf("comp prec: symbol %d, pilots %d\n",symbol, pilots);
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  if (mod_order0 == 4) {
    QAM_amp0_128  = _mm_set1_epi16(QAM16_n1);
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    QAM_amp0_128b = _mm_setzero_si128();
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  } else if (mod_order0 == 6) {
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    QAM_amp0_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp0_128b = _mm_set1_epi16(QAM64_n2);
  }
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  if (mod_order1 == 4) {
    QAM_amp1_128  = _mm_set1_epi16(QAM16_n1);
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    QAM_amp1_128b = _mm_setzero_si128();
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  } else if (mod_order1 == 6) {
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    QAM_amp1_128  = _mm_set1_epi16(QAM64_n1);
    QAM_amp1_128b = _mm_set1_epi16(QAM64_n2);
  }
    
  for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++) {
        
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   // printf("symbol %d, rx antenna %d\n", symbol, aarx);

    dl_ch0_128          = (__m128i *)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12]; // this is h11
    dl_ch1_128          = (__m128i *)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12]; // this is h12
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    dl_ch_mag0_128      = (__m128i *)&dl_ch_mag0[aarx][symbol*frame_parms->N_RB_DL*12]; //responsible for x1
    dl_ch_mag0_128b     = (__m128i *)&dl_ch_magb0[aarx][symbol*frame_parms->N_RB_DL*12];//responsible for x1
    dl_ch_mag1_128      = (__m128i *)&dl_ch_mag1[aarx][symbol*frame_parms->N_RB_DL*12];   //responsible for x2. always coming from tx2
    dl_ch_mag1_128b     = (__m128i *)&dl_ch_magb1[aarx][symbol*frame_parms->N_RB_DL*12];  //responsible for x2. always coming from tx2
    rxdataF128         = (__m128i *)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12]; //received signal on antenna of interest h11*x1+h12*x2
    rxdataF_comp0_128   = (__m128i *)&rxdataF_comp0[aarx][symbol*frame_parms->N_RB_DL*12]; //result of multipl with MF x1 on antenna of interest
    rxdataF_comp1_128   = (__m128i *)&rxdataF_comp1[aarx][symbol*frame_parms->N_RB_DL*12]; //result of multipl with MF x2 on antenna of interest
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    for (rb=0; rb<nb_rb; rb++) {
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      // combine TX channels using precoder from pmi
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      if (mimo_mode==LARGE_CDD) {
        prec2A_TM3_128(&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM3_128(&dl_ch0_128[1],&dl_ch1_128[1]);
        
	
        if (pilots==0) {
          prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
        prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]); 
        prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]); 
        
        if (pilots==0) {
          prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
        prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
        
        if (pilots==0) {
          prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
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        else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING) {
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[1],&dl_ch1_128[1]);
        
        if (pilots==0) {
          prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
      
      
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      else {
        LOG_E(PHY,"Unknown MIMO mode\n");
        return;
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      }
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      if (mod_order0>2) {  
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        // 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);
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        mmtmpD1 = _mm_madd_epi16(dl_ch0_128[1],dl_ch0_128[1]);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
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        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);
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        //  print_shorts("dl_ch_mag0_128[0]=",&dl_ch_mag0_128[0]);
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        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);
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        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],dl_ch0_128[2]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
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          dl_ch_mag0_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag0_128b[2] = dl_ch_mag0_128[2];
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          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);        
        }
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        dl_ch_mag0_128b[0] = _mm_mulhi_epi16(dl_ch_mag0_128b[0],QAM_amp0_128b);
        dl_ch_mag0_128b[0] = _mm_slli_epi16(dl_ch_mag0_128b[0],1);
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       // print_shorts("dl_ch_mag0_128b[0]=",&dl_ch_mag0_128b[0]);
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        dl_ch_mag0_128b[1] = _mm_mulhi_epi16(dl_ch_mag0_128b[1],QAM_amp0_128b);
        dl_ch_mag0_128b[1] = _mm_slli_epi16(dl_ch_mag0_128b[1],1);
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        if (pilots==0) {
          dl_ch_mag0_128b[2] = _mm_mulhi_epi16(dl_ch_mag0_128b[2],QAM_amp0_128b);
          dl_ch_mag0_128b[2] = _mm_slli_epi16(dl_ch_mag0_128b[2],1);      
        }
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      }

      if (mod_order1>2) {  
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        // get channel amplitude if not QPSK
        
        mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],dl_ch1_128[0]);  
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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        mmtmpD1 = _mm_madd_epi16(dl_ch1_128[1],dl_ch1_128[1]);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
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        mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);
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        dl_ch_mag1_128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag1_128b[0] = dl_ch_mag1_128[0];
        dl_ch_mag1_128[0] = _mm_mulhi_epi16(dl_ch_mag1_128[0],QAM_amp1_128);
        dl_ch_mag1_128[0] = _mm_slli_epi16(dl_ch_mag1_128[0],1);
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       // print_shorts("dl_ch_mag1_128[0]=",&dl_ch_mag1_128[0]);
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        dl_ch_mag1_128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
        dl_ch_mag1_128b[1] = dl_ch_mag1_128[1];
        dl_ch_mag1_128[1] = _mm_mulhi_epi16(dl_ch_mag1_128[1],QAM_amp1_128);
        dl_ch_mag1_128[1] = _mm_slli_epi16(dl_ch_mag1_128[1],1);
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        if (pilots==0) {
          mmtmpD0 = _mm_madd_epi16(dl_ch1_128[2],dl_ch1_128[2]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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          mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);
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          dl_ch_mag1_128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
          dl_ch_mag1_128b[2] = dl_ch_mag1_128[2];
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          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);        
        }
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        dl_ch_mag1_128b[0] = _mm_mulhi_epi16(dl_ch_mag1_128b[0],QAM_amp1_128b);
        dl_ch_mag1_128b[0] = _mm_slli_epi16(dl_ch_mag1_128b[0],1);
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       // print_shorts("dl_ch_mag1_128b[0]=",&dl_ch_mag1_128b[0]);
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        dl_ch_mag1_128b[1] = _mm_mulhi_epi16(dl_ch_mag1_128b[1],QAM_amp1_128b);
        dl_ch_mag1_128b[1] = _mm_slli_epi16(dl_ch_mag1_128b[1],1);
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        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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      }

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      // layer 0 
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      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[0],rxdataF128[0]);
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    //  print_ints("re",&mmtmpD0); 
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      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[0],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
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           // print_ints("im",&mmtmpD1);
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      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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           // printf("Shift: %d\n",output_shift);
          // print_ints("re(shift)",&mmtmpD0);
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      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_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);
          // print_ints("c1",&mmtmpD3);
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      rxdataF_comp0_128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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           // print_shorts("rx:",rxdataF128);
           // print_shorts("ch:",dl_ch0_128);
        // print_shorts("pack:",rxdataF_comp0_128);
          
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch0_128[1],rxdataF128[1]);
      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
      mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[1],_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      rxdataF_comp0_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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           //  print_shorts("rx:",rxdataF128+1);
            //  print_shorts("ch:",dl_ch0_128+1);
            // print_shorts("pack:",rxdataF_comp0_128+1);        
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      if (pilots==0) {
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        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch0_128[2],rxdataF128[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch0_128[2],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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        rxdataF_comp0_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
           //   print_shorts("rx:",rxdataF128+2);
           //   print_shorts("ch:",dl_ch0_128+2);
            //  print_shorts("pack:",rxdataF_comp0_128+2);
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      }
      
      
      // layer 1
      // MF multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[0],rxdataF128[0]);
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           //  print_ints("re",&mmtmpD0);
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     // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
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      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[0],_MM_SHUFFLE(2,3,0,1));
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      mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
      mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
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            //  print_ints("im",&mmtmpD1);
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      mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[0]);
      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      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);
             // 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
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      mmtmpD0 = _mm_madd_epi16(dl_ch1_128[1],rxdataF128[1]);
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      // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
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      mmtmpD1 = _mm_shufflelo_epi16(dl_ch1_128[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)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
      mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
      mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
      mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
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      rxdataF_comp1_128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
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            //  print_shorts("rx:",rxdataF128+1);
           // print_shorts("ch:",dl_ch1_128+1);
            // print_shorts("pack:",rxdataF_comp1_128+1);        
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      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)
        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_comp1_128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //   print_shorts("rx:",rxdataF128+2);
           //  print_shorts("ch:",dl_ch1_128+2);
             //         print_shorts("pack:",rxdataF_comp1_128+2);
        
        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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      }
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    } // rb loop
    Nre = (pilots==0) ? 12 : 8;
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    precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
                                                        (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
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    precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
                                                        (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
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  } // rx_antennas
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  phy_measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,phy_measurements->n0_power_tot);
  phy_measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,phy_measurements->n0_power_tot);
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 // printf("eNB_id %d, symbol %d: precoded CQI %d dB\n",eNB_id,symbol,
     //  phy_measurements->precoded_cqi_dB[eNB_id][0]);
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  _mm_empty();
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  _m_empty();
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  #elif defined(__arm__)
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  unsigned short rb,Nre;
  unsigned char aarx,symbol_mod,pilots=0;
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  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;
  
  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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  int **rxdataF_ext           = lte_ue_pdsch_vars->rxdataF_ext;
  int **dl_ch_estimates_ext   = lte_ue_pdsch_vars->dl_ch_estimates_ext;
  int **dl_ch_mag0            = lte_ue_pdsch_vars->dl_ch_mag0;
  int **dl_ch_mag1            = lte_ue_pdsch_vars->dl_ch_mag1;
  int **dl_ch_magb0           = lte_ue_pdsch_vars->dl_ch_magb0;
  int **dl_ch_magb1           = lte_ue_pdsch_vars->dl_ch_magb1;
  int **rxdataF_comp0         = lte_ue_pdsch_vars->rxdataF_comp0;
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  int **rxdataF_comp1         = lte_ue_pdsch_vars->rxdataF_comp1[harq_pid][round];
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  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;
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  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
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    if (frame_parms->mode1_flag==1) // 10 out of 12 so don't reduce size
      { nb_rb=1+(5*nb_rb/6); }
    
    else
      { pilots=1; }
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  }
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  rx_power_correction=1;
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  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);
    
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  } 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);
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  }
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  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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  } 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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  }
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  //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);
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  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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    dl_ch0_128          = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128          = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch0_128b          = (int16x8_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
    dl_ch1_128b          = (int16x8_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
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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];
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    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];
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    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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        if (pilots==0) {
          prec2A_TM3_128(&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1) {
        prec2A_TM4_128(0,&dl_ch0_128[0],&dl_ch1_128[0]); 
        prec2A_TM4_128(0,&dl_ch0_128[1],&dl_ch1_128[1]); 
        
        if (pilots==0) {
          prec2A_TM4_128(0,&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj) {
        prec2A_TM4_128(1,&dl_ch0_128[0],&dl_ch1_128[0]);
        prec2A_TM4_128(1,&dl_ch0_128[1],&dl_ch1_128[1]);
        
        if (pilots==0) {
          prec2A_TM4_128(1,&dl_ch0_128[2],&dl_ch1_128[2]); 
        }
      }
      else {
        LOG_E(PHY,"Unknown MIMO mode\n");
        return;
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      }

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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);
	}
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      }

      if (mod_order1>2) {
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	// 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);
	}
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      }
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      mmtmpD0 = vmull_s16(dl_ch0_128[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_ch0_128[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_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
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      //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])]
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      mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[1],*(int16x4_t*)conj)), rxdataF128[1]);
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      //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])]
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      mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
			     vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
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      //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]
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      mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
      mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
      rxdataF_comp0_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	
      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)),
			     vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
      
      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)),
			     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[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	
      // 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)),
			     vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
      mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[0],*(int16x4_t*)conj)), rxdataF128[0]);
	
      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)),
			     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_comp1_128[0] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	
      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)),
			     vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
	
      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)),
			     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[1] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
     
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      if (pilots==0) {
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	mmtmpD0 = vmull_s16(dl_ch0_128[4], rxdataF128[4]);
	mmtmpD1 = vmull_s16(dl_ch0_128[5], rxdataF128[5]);
	mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
			       vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
	  
	mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
	mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch0_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
	mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
			       vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
	  
	  
	mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
	mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
	rxdataF_comp0_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
	mmtmpD0 = vmull_s16(dl_ch1_128[4], rxdataF128[4]);
	mmtmpD1 = vmull_s16(dl_ch1_128[5], rxdataF128[5]);
	mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
			       vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
	  
	mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[4],*(int16x4_t*)conj)), rxdataF128[4]);
	mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch1_128[5],*(int16x4_t*)conj)), rxdataF128[5]);
	mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
			       vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
	  
	  
	mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
	mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
	rxdataF_comp1_128[2] = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
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      }
    }
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    Nre = (pilots==0) ? 12 : 8;
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    // rx_antennas
  }
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  Nre = (pilots==0) ? 12 : 8;
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  precoded_signal_strength0 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*Nre],
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                                                        (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
      
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  precoded_signal_strength1 += ((signal_energy_nodc(&dl_ch_estimates_ext[aarx+2][symbol*frame_parms->N_RB_DL*Nre],
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                                                        (nb_rb*Nre))*rx_power_correction) - (phy_measurements->n0_power[aarx]));
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  phy_measurements->precoded_cqi_dB[eNB_id][0] = dB_fixed2(precoded_signal_strength0,phy_measurements->n0_power_tot);
  phy_measurements->precoded_cqi_dB[eNB_id][1] = dB_fixed2(precoded_signal_strength1,phy_measurements->n0_power_tot);
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#endif
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}
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void dlsch_dual_stream_correlation(LTE_DL_FRAME_PARMS *frame_parms,
                                   unsigned char symbol,
                                   unsigned short nb_rb,
                                   int **dl_ch_estimates_ext,
                                   int **dl_ch_estimates_ext_i,
                                   int **dl_ch_rho_ext,
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                                   unsigned char output_shift)
{

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

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

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

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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[aarx][symbol*frame_parms->N_RB_DL*12];
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    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];
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    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][symbol*frame_parms->N_RB_DL*12];
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    for (rb=0; rb<nb_rb; rb++) {
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      // multiply by conjugated channel
      mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[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_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]);
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      //      print_ints("im",&mmtmpD1);
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      // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
      mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
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      //      print_ints("re(shift)",&mmtmpD0);
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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);
      //      print_ints("c1",&mmtmpD3);
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      dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);

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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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      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;
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      } else {
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        dl_ch128+=2;
        dl_ch128i+=2;
        dl_ch_rho128+=2;
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      }
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    }           
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  }
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  _mm_empty();
  _m_empty();
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#elif defined(__arm__)

#endif
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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_antennas_tx_eNB; aatx++) {

      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));
          //       print_shorts("mrc comp0:",&rxdataF_comp128_0[i]);
	//	 print_shorts("mrc mag0:",&dl_ch_mag128_0[i]);
	//	 print_shorts("mrc mag0b:",&dl_ch_mag128_0b[i]);
        //      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]);
        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++) {
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        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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        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) {

    for (aatx=0; aatx<frame_parms->nb_antennas_tx_eNB; aatx++) {

      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,
			      LTE_UE_PDSCH *lte_ue_pdsch_vars, 
			      int harq_pid,
			      int round,
			      unsigned char symbol,
			      unsigned short nb_rb,
			      unsigned char dual_stream_UE) {
    
  unsigned char aatx;
  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;

  int **rxdataF_comp0 		=lte_ue_pdsch_vars->rxdataF_comp0;
  int **rxdataF_comp1 		=lte_ue_pdsch_vars->rxdataF_comp1[harq_pid][round];
  int **dl_ch_rho_ext 		=lte_ue_pdsch_vars->dl_ch_rho_ext[harq_pid][round];
  int **dl_ch_rho2_ext 		=lte_ue_pdsch_vars->dl_ch_rho2_ext;
  int **dl_ch_mag0            	= lte_ue_pdsch_vars->dl_ch_mag0;
  int **dl_ch_mag1            	= lte_ue_pdsch_vars->dl_ch_mag1;
  int **dl_ch_magb0           	= lte_ue_pdsch_vars->dl_ch_magb0;
  int **dl_ch_magb1           	= lte_ue_pdsch_vars->dl_ch_magb1;
  
  
  if (frame_parms->nb_antennas_rx>1) {
      
    for (aatx=0;aatx<frame_parms->nb_antennas_tx_eNB;aatx++) {

      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp0[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];  
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp0[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];  
      dl_ch_mag128_0      = (__m128i *)&dl_ch_mag0[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];  
      dl_ch_mag128_1      = (__m128i *)&dl_ch_mag0[(aatx<<1)+1][symbol*frame_parms->N_RB_DL*12];  
      dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb0[(aatx<<1)][symbol*frame_parms->N_RB_DL*12];  
      dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb0[(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] = _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));
      
	// 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]);
      }
    }

   // if (rho) {
      rho128_0 = (__m128i *) &dl_ch_rho_ext[0][symbol*frame_parms->N_RB_DL*12];
      rho128_1 = (__m128i *) &dl_ch_rho_ext[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] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
      }
   //}


    if (dual_stream_UE == 1) {
      rho128_i0 = (__m128i *) &dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12];
      rho128_i1 = (__m128i *) &dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12];
      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];  
      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));
            
        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));
	
	//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]);
      }
    }
  }

  _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,
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                         uint8_t symbol,
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                         unsigned short nb_rb)
{
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#if defined(__x86_64__)||defined(__i386__)
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  short rb, ch_amp;
  unsigned char aatx,aarx,pilots=0,symbol_mod;
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  __m128i *dl_ch128, ch_amp128;

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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->mode1_flag==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
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      pilots=1;
  }

  // Determine scaling amplitude based the symbol
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ch_amp = ((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
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    LOG_D(PHY,"Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);
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  ch_amp128 = _mm_set1_epi16(ch_amp); // Q3.13

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

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
                
      for (rb=0;rb<nb_rb;rb++) {
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        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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        }       
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      }                
    }
  }
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#elif defined(__arm__)

#endif
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}

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//compute average channel_level on each (TX,RX) antenna pair
void dlsch_channel_level(int **dl_ch_estimates_ext,
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                         LTE_DL_FRAME_PARMS *frame_parms,
                         int *avg,
                         uint8_t symbol,
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                         unsigned short nb_rb)
{
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#if defined(__x86_64__)||defined(__i386__)
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  short rb;
  unsigned char aatx,aarx,nre=12,symbol_mod;
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  __m128i *dl_ch128,avg128D;

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

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  for (aatx=0; aatx<frame_parms->nb_antennas_tx_eNB; aatx++)
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
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      //clear average level
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      avg128D = _mm_setzero_si128();
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      // 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++) {
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        //      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]));
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
          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]);
          }
        */
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      }

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
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        nre=8;
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      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
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        nre=10;
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      else
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        nre=12;
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      avg[(aatx<<1)+aarx] = (((int*)&avg128D)[0] + 
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                             ((int*)&avg128D)[1] + 
                             ((int*)&avg128D)[2] + 
                             ((int*)&avg128D)[3])/(nb_rb*nre);
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      //            printf("Channel level : %d\n",avg[(aatx<<1)+aarx]);
    }
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  _mm_empty();
  _m_empty();

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#elif defined(__arm__)
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  short rb;
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  unsigned char aatx,aarx,nre=12,symbol_mod;
  int32x4_t avg128D;
  int16x4_t *dl_ch128;
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  symbol_mod = (symbol>=(7-frame_parms->Ncp)) ? symbol-(7-frame_parms->Ncp) : symbol;

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  for (aatx=0; aatx<frame_parms->nb_antennas_tx_eNB; aatx++)
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix
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      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
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      for (rb=0; rb<nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&dl_ch128[0]);
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[0],dl_ch128[0]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[1],dl_ch128[1]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[2],dl_ch128[2]));
        avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[3],dl_ch128[3]));
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        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
          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;
        }
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        /*
          if (rb==0) {
          print_shorts("dl_ch128",&dl_ch128[0]);
          print_shorts("dl_ch128",&dl_ch128[1]);
          print_shorts("dl_ch128",&dl_ch128[2]);
          }
        */
      }

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
        nre=8;
      else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
        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]);
    }


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#endif
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}

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//compute average channel_level of effective (precoded) channel

3017
//compute average channel_level of effective (precoded) channel
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void dlsch_channel_level_TM34(int **dl_ch_estimates_ext,
                              LTE_DL_FRAME_PARMS *frame_parms,
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			       unsigned char *pmi_ext,
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                              int *avg,
                              uint8_t symbol,
                              unsigned short nb_rb,
                              MIMO_mode_t mimo_mode){

3026
#if defined(__x86_64__)||defined(__i386__)
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  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
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  avg128D = _mm_setzero_si128();
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  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
    nre=8;
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
    nre=10;
  else
    nre=12;

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

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    for (rb=0; rb<nb_rb; rb++) {
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      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);

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      if (mimo_mode==LARGE_CDD) 
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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      else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);          
      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]);
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      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
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      if (mimo_mode==LARGE_CDD) 
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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      else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
        prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);          
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
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        dl_ch0_128+=2;  
        dl_ch1_128+=2;
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      }
      else {
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        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);          

        if (mimo_mode==LARGE_CDD) 
          prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
          prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
          prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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	else if (mimo_mode==DUALSTREAM_PUSCH_PRECODING)
	  prec2A_TM4_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
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        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
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        dl_ch0_128+=3;  
        dl_ch1_128+=3;
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      }          
    }
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    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
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      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
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      (((int*)&avg128D)[3])/(nb_rb*nre);
  }
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  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

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

#endif
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}

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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){

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


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

  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
    nre=8;
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
    nre=10;
  else
    nre=12;

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

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

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

      if (mimo_mode==LARGE_CDD) 
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);

      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);          
      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]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);

      if (mimo_mode==LARGE_CDD) 
        prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
        prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
      else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
        prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);

      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);          
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
        dl_ch0_128+=2;  
        dl_ch1_128+=2;
      }
      else {
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);          

        if (mimo_mode==LARGE_CDD) 
          prec2A_TM3_128(&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODING1)
          prec2A_TM4_128(0,&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        else if (mimo_mode==DUALSTREAM_UNIFORM_PRECODINGj)
          prec2A_TM4_128(1,&dl_ch0_128_tmp,&dl_ch1_128_tmp);

        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));

        dl_ch0_128+=3;  
        dl_ch1_128+=3;
      }          
    }

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

  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}*/

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//compute average channel_level of effective (precoded) channel
void dlsch_channel_level_TM56(int **dl_ch_estimates_ext,
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                              LTE_DL_FRAME_PARMS *frame_parms,
                              unsigned char *pmi_ext,
                              int *avg,
3233
                              uint8_t symbol,
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                              unsigned short nb_rb)
{
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3237
#if defined(__x86_64__)||defined(__i386__)
3238 3239 3240

  short rb;
  unsigned char aarx,nre=12,symbol_mod;
3241
  __m128i *dl_ch0_128,*dl_ch1_128, dl_ch0_128_tmp, dl_ch1_128_tmp,avg128D;
3242 3243 3244 3245

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

  //clear average level
3246
  avg128D = _mm_setzero_si128();
3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257
  avg[0] = 0;
  avg[1] = 0;
  // 5 is always a symbol with no pilots for both normal and extended prefix

  if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0))
    nre=8;
  else if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==1))
    nre=10;
  else
    nre=12;

3258
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3259 3260
    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];
3261

3262
    for (rb=0; rb<nb_rb; rb++) {
3263

3264 3265
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[0]);
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[0]);
3266

3267
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3268
      //      mmtmpD0 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3269
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3270

3271
      dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[1]);
3272
      dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[1]);
3273

3274
      prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
3275
      //      mmtmpD1 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
3276
      avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3277 3278

      if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->mode1_flag==0)) {
3279 3280
        dl_ch0_128+=2;  
        dl_ch1_128+=2;
3281 3282
      }
      else {
3283 3284
        dl_ch0_128_tmp = _mm_load_si128(&dl_ch0_128[2]);
        dl_ch1_128_tmp = _mm_load_si128(&dl_ch1_128[2]);          
3285

3286 3287 3288
        prec2A_TM56_128(pmi_ext[rb],&dl_ch0_128_tmp,&dl_ch1_128_tmp);
        //      mmtmpD2 = _mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp);
        avg128D = _mm_add_epi32(avg128D,_mm_madd_epi16(dl_ch0_128_tmp,dl_ch0_128_tmp));
3289

3290 3291
        dl_ch0_128+=3;  
        dl_ch1_128+=3;
3292 3293
      }          
    }
3294 3295

    avg[aarx] = (((int*)&avg128D)[0])/(nb_rb*nre) +
3296 3297
      (((int*)&avg128D)[1])/(nb_rb*nre) +
      (((int*)&avg128D)[2])/(nb_rb*nre) +
3298 3299
      (((int*)&avg128D)[3])/(nb_rb*nre);
  }
3300

3301 3302 3303 3304 3305
  // choose maximum of the 2 effective channels
  avg[0] = cmax(avg[0],avg[1]);

  _mm_empty();
  _m_empty();
3306 3307 3308 3309 3310

#elif defined(__arm__)


#endif
3311
}
3312

3313 3314 3315 3316 3317 3318

void dlsch_alamouti(LTE_DL_FRAME_PARMS *frame_parms,
                    int **rxdataF_comp,
                    int **dl_ch_mag,
                    int **dl_ch_magb,
                    unsigned char symbol,
3319 3320
                    unsigned short nb_rb)
{
3321

3322
#if defined(__x86_64__)||defined(__i386__)
3323 3324 3325 3326 3327

  short *rxF0,*rxF1;
  __m128i *ch_mag0,*ch_mag1,*ch_mag0b,*ch_mag1b, amp, *rxF0_128;
  unsigned char rb,re;
  int jj = (symbol*frame_parms->N_RB_DL*12);
3328 3329
  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;
3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340
  rxF0_128 = (__m128i*) &rxdataF_comp[0][jj];

  amp = _mm_set1_epi16(ONE_OVER_SQRT2_Q15);

  //    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];
3341
 
3342
  for (rb=0; rb<nb_rb; rb++) {
3343

3344
    for (re=0; re<((pilots==0)?12:8); re+=2) {
3345 3346

      // Alamouti RX combining
3347

3348
      //      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]);
3349
      rxF0[0] = rxF0[0] + rxF1[2];
3350
      rxF0[1] = rxF0[1] - rxF1[3]; 
3351 3352 3353

      rxF0[2] = rxF0[2] - rxF1[0];
      rxF0[3] = rxF0[3] + rxF1[1];
3354

3355
      //      printf("Alamouti: rxF0 after (%d,%d,%d,%d)\n",rxF0[0],rxF0[1],rxF0[2],rxF0[3]);
3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393
      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
    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);

    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]);

      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);

      ch_mag0+=3;
      ch_mag1+=3;
      ch_mag0b+=3;
      ch_mag1b+=3;
      rxF0_128+=3;
3394
    } else {
3395 3396 3397 3398 3399 3400 3401 3402 3403
      ch_mag0+=2;
      ch_mag1+=2;
      ch_mag0b+=2;
      ch_mag1b+=2;
      rxF0_128+=2;
    }
  }

  _mm_empty();
3404
  _m_empty();
3405

3406
#elif defined(__arm__)
3407

3408
#endif
3409 3410
}

3411

3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424
//==============================================================================================
// 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,
3425
                                        uint32_t high_speed_flag,
3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441
                                        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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3442
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
3443

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3444
  if (frame_parms->frame_type == TDD) {  // TDD
3445 3446
    sss_symb = nsymb-1;
    pss_symb = 2;
3447
  } else {
3448 3449 3450
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }
3451

3452 3453 3454
  if (symbol_mod==(4-frame_parms->Ncp))
    poffset=3;

3455
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
3456 3457 3458 3459 3460

    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];
3461

3462 3463 3464 3465
    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)))];
3466

3467
    if ((frame_parms->N_RB_DL&1) == 0)  // even number of RBs
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3468
      
3469
      for (rb=0;rb<frame_parms->N_RB_DL;rb++) {
3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480
        
        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;
3481

3482 3483 3484
	if (rb_alloc_ind == 1)
          nb_rb++;

3485 3486 3487
        // 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)))];
3488
          //dl_ch0++;
3489
        }
3490

3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515
        // 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;
          }
        }

3516 3517 3518
        if (rb_alloc_ind==1) {
          *pmi_ext = (pmi>>((rb>>2)<<1))&3;
          memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
3519 3520

          /*
3521 3522 3523 3524
	    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");
3525 3526
          */
          if (pilots==0) {
3527
            for (i=0; i<12; i++) {
3528
              rxF_ext[i]=rxF[i];
3529
              /*
3530 3531
		printf("%d : (%d,%d)\n",(rxF+i-&rxdataF[aarx][( (symbol*(frame_parms->ofdm_symbol_size)))]),
		((short*)&rxF[i])[0],((short*)&rxF[i])[1]);*/
3532
            }
3533

3534 3535
            dl_ch0_ext+=12;
            rxF_ext+=12;
3536
          } else {
3537
            j=0;
3538 3539

            for (i=0; i<12; i++) {
3540 3541 3542
              if ((i!=(frame_parms->nushift+poffset)) &&
                  (i!=((frame_parms->nushift+poffset+6)%12))) {
                rxF_ext[j]=rxF[i];
3543
                //            printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
3544
                dl_ch0_ext[j++]=dl_ch0[i];
3545

3546 3547
              }
            }
3548

3549 3550 3551
            dl_ch0_ext+=10;
            rxF_ext+=10;
          }
3552

3553

3554
        }
3555

3556 3557
        dl_ch0+=12;
        rxF+=12;
3558 3559 3560

      }
    else {  // Odd number of RBs
3561
      for (rb=0; rb<frame_parms->N_RB_DL>>1; rb++) {
3562 3563 3564
#ifdef DEBUG_DLSCH_DEMOD
	printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
#endif
3565
        skip_half=0;
3566

3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577
        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;

3578 3579
	if (rb_alloc_ind == 1)
	  nb_rb++;
3580

3581 3582 3583 3584 3585

        // 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;
        }
3586

3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612
        //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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3613

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3614 3615 3616 3617
          if (((subframe==0)||(subframe==5)) && 
	      (rb>((frame_parms->N_RB_DL>>1)-3)) && 
	      (rb<((frame_parms->N_RB_DL>>1)+3)) && 
	      (l==pss_symb) ) {
3618 3619
            rb_alloc_ind = 0;
          }
3620

3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640
          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) &&
            (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) {

3641 3642 3643
#ifdef DEBUG_DLSCH_DEMOD
	  printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
3644
          if (pilots==0) {
3645
	    //	    printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
3646 3647
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));
3648

3649 3650 3651 3652 3653 3654
              for (i=0; i<6; i++) {
	        rxF_ext[i]=rxF[i];
#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
	      }
3655 3656
              dl_ch0_ext+=6;
              rxF_ext+=6;
3657
            } else if (skip_half==2) {
3658
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));
3659

3660
              for (i=0; i<6; i++) {
3661
                rxF_ext[i]=rxF[(i+6)];
3662 3663 3664 3665
#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
	      }
3666 3667
              dl_ch0_ext+=6;
              rxF_ext+=6;
3668
            } else {
3669
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
3670

3671
              for (i=0; i<12; i++) {
3672
                rxF_ext[i]=rxF[i];
3673 3674 3675 3676
#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
	      }
3677 3678 3679
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
3680
          } else {
3681
	    //	    printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
3682
            j=0;
3683

3684
            if (skip_half==1) {
3685
              for (i=0; i<6; i++) {
3686 3687
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
3688 3689 3690
#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
3691 3692 3693
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
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3694
	      rxF_ext+=5;
3695
              dl_ch0_ext+=5;
3696 3697
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
3698 3699
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
3700 3701 3702
#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
3703 3704 3705
                  dl_ch0_ext[j++]=dl_ch0[i+6];
                }
              }
3706

3707 3708
              dl_ch0_ext+=5;
              rxF_ext+=5;
3709 3710
            } else {
              for (i=0; i<12; i++) {
3711 3712 3713
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
3714 3715 3716
#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
3717
                  dl_ch0_ext[j++]=dl_ch0[i];
3718

3719 3720
                }
              }
3721

3722 3723 3724 3725
              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          }
3726
        }
3727 3728
        dl_ch0+=12;
        rxF+=12;
3729 3730 3731 3732 3733
      } // first half loop


      // Do middle RB (around DC)
      if (rb < 32)
3734
        rb_alloc_ind = (rb_alloc[0]>>rb) & 1;
3735
      else if (rb < 64)
3736
        rb_alloc_ind = (rb_alloc[1]>>(rb-32)) & 1;
3737
      else if (rb < 96)
3738
        rb_alloc_ind = (rb_alloc[2]>>(rb-64)) & 1;
3739
      else if (rb < 100)
3740
        rb_alloc_ind = (rb_alloc[3]>>(rb-96)) & 1;
3741
      else
3742
        rb_alloc_ind = 0;
3743

3744

3745 3746
      if (rb_alloc_ind == 1)
	nb_rb++;
3747 3748

      // PBCH
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3750 3751 3752
      if ((subframe==0) && 
	  (l>=(nsymb>>1)) && 
	  (l<((nsymb>>1) + 4))) {
3753
        rb_alloc_ind = 0;
3754
      }
3755

3756
      //SSS
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3757
      if (((subframe==0)||(subframe==5)) && (l==sss_symb) ) {
3758
        rb_alloc_ind = 0;
3759
      }
3760

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3761
      if (frame_parms->frame_type == FDD) {
3762
        //PSS
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3763
        if (((subframe==0)||(subframe==5)) && (l==pss_symb) ) {
3764 3765
          rb_alloc_ind = 0;
        }
3766 3767
      }

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3768
      //PSS
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3769
      if ((frame_parms->frame_type == TDD) &&
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3770 3771 3772
          (subframe==6) &&
	  (l==pss_symb) ) {
	rb_alloc_ind = 0;
3773
      }
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3774
      
3775 3776

      //  printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);
3777 3778
      //      printf("DC rb %d (%p)\n",rb,rxF);
      if (rb_alloc_ind==1) {
3779 3780 3781
#ifdef DEBUG_DLSCH_DEMOD
	printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
3782
        if (pilots==0) {
3783
          for (i=0; i<6; i++) {
3784 3785 3786
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[i];
          }
3787

3788
          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
3789 3790

          for (; i<12; i++) {
3791 3792 3793
            dl_ch0_ext[i]=dl_ch0[i];
            rxF_ext[i]=rxF[(1+i-6)];
          }
3794

3795 3796
          dl_ch0_ext+=12;
          rxF_ext+=12;
3797
        } else { // pilots==1
3798
          j=0;
3799 3800

          for (i=0; i<6; i++) {
3801 3802 3803
            if (i!=((frame_parms->nushift+poffset)%6)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[i];
3804 3805 3806
#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
3807 3808
            }
          }
3809

3810
          rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
3811 3812

          for (; i<12; i++) {
3813 3814 3815
            if (i!=((frame_parms->nushift+6+poffset)%12)) {
              dl_ch0_ext[j]=dl_ch0[i];
              rxF_ext[j++]=rxF[(1+i-6)];
3816 3817 3818
#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           
3819 3820
            }
          }
3821

3822 3823 3824
          dl_ch0_ext+=10;
          rxF_ext+=10;
        } // symbol_mod==0
3825 3826
      } // rballoc==1
      else {
3827
        rxF       = &rxdataF[aarx][((symbol*(frame_parms->ofdm_symbol_size)))];
3828
      }
3829

3830 3831 3832
      dl_ch0+=12;
      rxF+=7;
      rb++;
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3833
     
3834
      for (;rb<frame_parms->N_RB_DL;rb++) {
3835 3836 3837
        //      printf("dlch_ext %d\n",dl_ch0_ext-&dl_ch_estimates_ext[aarx][0]);       
        //      printf("rb %d (%p)\n",rb,rxF);
        skip_half=0;
3838

3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849
        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;

3850 3851
	if (rb_alloc_ind == 1)
	  nb_rb++;
3852 3853 3854 3855 3856 3857 3858 3859 3860 3861

        // 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;
3862

3863 3864 3865 3866
        //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;
        }
3867
        //SSS
3868 3869 3870 3871 3872 3873 3874 3875 3876
        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;
          }
3877 3878

          //PSS
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3880 3881 3882 3883 3884 3885 3886
          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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3887

3888
            (subframe==6)) { //TDD Subframe 6
3889 3890 3891
          if ((rb>((frame_parms->N_RB_DL>>1)-3)) && (rb<((frame_parms->N_RB_DL>>1)+3)) && (l==pss_symb) ) {
            rb_alloc_ind = 0;
          }
3892

3893 3894 3895 3896 3897
          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;
        }
3898

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3899 3900


3901
        if (rb_alloc_ind==1) {
3902 3903 3904
#ifdef DEBUG_DLSCH_DEMOD	 
	  printf("rb %d/symbol %d (skip_half %d)\n",rb,l,skip_half);
#endif
3905
          /*
3906
	    printf("rb %d\n",rb);
3907 3908 3909 3910 3911
            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) {
3912
	    //	    printf("Extracting w/o pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
3913 3914
            if (skip_half==1) {
              memcpy(dl_ch0_ext,dl_ch0,6*sizeof(int));
3915

3916
              for (i=0; i<6; i++) {
3917
                rxF_ext[i]=rxF[i];
3918 3919 3920 3921
#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
	      }
3922 3923 3924
              dl_ch0_ext+=6;
              rxF_ext+=6;

3925
            } else if (skip_half==2) {
3926
              memcpy(dl_ch0_ext,dl_ch0+6,6*sizeof(int));
3927

3928
              for (i=0; i<6; i++) {
3929
                rxF_ext[i]=rxF[(i+6)];
3930 3931 3932 3933
#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
	      }
3934 3935 3936
              dl_ch0_ext+=6;
              rxF_ext+=6;

3937
            } else {
3938
              memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
3939

3940
              for (i=0; i<12; i++) {
3941
                rxF_ext[i]=rxF[i];
3942 3943 3944 3945
#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
	      }
3946 3947 3948
              dl_ch0_ext+=12;
              rxF_ext+=12;
            }
3949
          } else {
3950
	    //	    printf("Extracting with pilots (symbol %d, rb %d, skip_half %d)\n",l,rb,skip_half);
3951
            j=0;
3952

3953
            if (skip_half==1) {
3954
              for (i=0; i<6; i++) {
3955 3956
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[i];
3957 3958 3959
#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
3960 3961 3962
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
3963

3964 3965
              dl_ch0_ext+=5;
              rxF_ext+=5;
3966 3967
            } else if (skip_half==2) {
              for (i=0; i<6; i++) {
3968 3969
                if (i!=((frame_parms->nushift+poffset)%6)) {
                  rxF_ext[j]=rxF[(i+6)];
3970 3971 3972
#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
3973 3974 3975
                  dl_ch0_ext[j++]=dl_ch0[i+6];
                }
              }
3976

3977 3978
              dl_ch0_ext+=5;
              rxF_ext+=5;
3979 3980
            } else {
              for (i=0; i<12; i++) {
3981 3982 3983
                if ((i!=(frame_parms->nushift+poffset)) &&
                    (i!=((frame_parms->nushift+poffset+6)%12))) {
                  rxF_ext[j]=rxF[i];
3984 3985 3986
#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
3987 3988 3989 3990 3991 3992 3993 3994
                  dl_ch0_ext[j++]=dl_ch0[i];
                }
              }
              dl_ch0_ext+=10;
              rxF_ext+=10;
            }
          } // pilots=0
        }
3995

3996 3997
        dl_ch0+=12;
        rxF+=12;
3998 3999 4000
      }
    }
  }
4001
  
4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014

  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,
4015
                                      uint32_t high_speed_flag,
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4016 4017
                                      LTE_DL_FRAME_PARMS *frame_parms,
				      MIMO_mode_t mimo_mode) {
4018
    
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4019 4020 4021
/*uint8_t get_pmi(uint8_t N_RB_DL,LTE_DL_eNB_HARQ_t *dlsch_harq,uint16_t rb)
{

4022

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4023 4024 4025
  MIMO_mode_t mode   = dlsch_harq->mimo_mode;*/

//PHY_VARS_UE *phy_vars_ue,
4026

4027 4028 4029 4030 4031 4032
  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;
4033
  unsigned char *pmi_loc;
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4034
  
4035 4036 4037 4038 4039
  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;
4040

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4041
  nsymb = (frame_parms->Ncp==NORMAL) ? 14:12;
4042 4043
  l=symbol;

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4044
  if (frame_parms->frame_type == TDD) {  // TDD
4045 4046
    sss_symb = nsymb-1;
    pss_symb = 2;
4047
  } else {
4048 4049 4050 4051
    sss_symb = (nsymb>>1)-2;
    pss_symb = (nsymb>>1)-1;
  }

4052
  for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
4053 4054 4055 4056

    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))];
4057
    } else {
4058 4059 4060
      dl_ch0     = &dl_ch_estimates[aarx][5];
      dl_ch1     = &dl_ch_estimates[2+aarx][5];
    }
4061

4062 4063 4064 4065
    pmi_loc = pmi_ext;
    
    // pointers to extracted RX signals and channel estimates
    rxF_ext    = &rxdataF_ext[aarx][symbol*(frame_parms->N_RB_DL*12)];
4066 4067 4068
    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)];

4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081
    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
      skip_half=0;
      
      if (prb < 32)
	rb_alloc_ind = (rb_alloc[0]>>prb) & 1;
      else if (prb < 64)
	rb_alloc_ind = (rb_alloc[1]>>(prb-32)) & 1;
      else if (prb < 96)
	rb_alloc_ind = (rb_alloc[2]>>(prb-64)) & 1;
      else if (prb < 100)
	rb_alloc_ind = (rb_alloc[3]>>(prb-96)) & 1;
      else
	rb_alloc_ind = 0;
4082

4083 4084
      if (rb_alloc_ind == 1)
          nb_rb++;
4085
      
4086

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4087
      if ((frame_parms->N_RB_DL&1) == 0) {  // even number of RBs
4088

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4089 4090 4091
	// PBCH
	if ((subframe==0) && 
	    (prb>=((frame_parms->N_RB_DL>>1)-3)) && 
4092
	    (prb<((frame_parms->N_RB_DL>>1)+3)) && 
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4093 4094
	    (l>=(nsymb>>1)) && 
	    (l<((nsymb>>1) + 4))) {
4095
	  rb_alloc_ind = 0;
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4096
	  //	printf("symbol %d / rb %d: skipping PBCH REs\n",symbol,prb);
4097
	}
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4098 4099 4100 4101 4102 4103 4104
	
	//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) ) {
4105
	  rb_alloc_ind = 0;
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4106
	  //	printf("symbol %d / rb %d: skipping SSS REs\n",symbol,prb);
4107
	}
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4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132
	
	
	
	//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

4133

4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147
	  
	  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))];
	  }
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4148 4149
	  
	 if (mimo_mode <= PUSCH_PRECODING1)
4150
          *pmi_loc = (pmi>>((prb>>2)<<1))&3;
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4151 4152 4153
	 else
	  *pmi_loc=(pmi>>prb)&1;
	  
4154
          pmi_loc++;
4155 4156
	  
	  
4157
          if (pilots == 0) {
4158 4159 4160 4161 4162 4163 4164 4165
	    
            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));
	    dl_ch0_ext +=12;
	    dl_ch1_ext +=12;
	    rxF_ext    +=12;
          } else { // pilots==1
4166
            j=0;
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            for (i=0; i<12; i++) {
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              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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                //        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
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                dl_ch0_ext[j]=dl_ch0p[i];
                dl_ch1_ext[j++]=dl_ch1p[i];
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              }
            }
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	    dl_ch0_ext+=8;
	    dl_ch1_ext+=8;
	    rxF_ext+=8;
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          } // pilots==1
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	}
      } else {  // Odd number of RBs
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      // 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;
	  }
	}
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	if (rb_alloc_ind == 1) {
	  skip_half=0;
	
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	  //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) &&
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	       (((subframe==1) || (subframe==6))))) { //TDD Subframes 1,6
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	    if ((prb==((frame_parms->N_RB_DL>>1)-3)) && 
		(l==pss_symb))
	      skip_half=1;
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	    else if ((prb==((frame_parms->N_RB_DL>>1)+3)) && 
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		     (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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#ifdef DEBUG_DLSCH_DEMOD
	  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);
#endif
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          if (mimo_mode <= PUSCH_PRECODING1)
           *pmi_loc = (pmi>>((prb>>2)<<1))&3;
	  else
	   *pmi_loc=(pmi>>prb)&1;
         // 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);
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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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#ifdef DEBUG_DLSCH_DEMOD
		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]));
#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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#ifdef DEBUG_DLSCH_DEMOD
		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]));
#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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#ifdef DEBUG_DLSCH_DEMOD
		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]));
#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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#ifdef DEBUG_DLSCH_DEMOD
		    printf("(pilots,skip1)extract rb %d, re %d (%d)=> (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#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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#ifdef DEBUG_DLSCH_DEMOD
		    printf("(pilots,skip2)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#endif
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		    dl_ch0_ext[j]=dl_ch0p[i+6];
		    dl_ch1_ext[j++]=dl_ch1p[i+6];
		  }
		}
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		dl_ch0_ext+=4;
		dl_ch1_ext+=4;
		rxF_ext+=4;

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	      } 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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#ifdef DEBUG_DLSCH_DEMOD
		    printf("(pilots)extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
#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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#ifdef DEBUG_DLSCH_DEMOD
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	      for (i=0; i<6; i++) {
		printf("extract rb %d, re %d => (%d,%d)\n",prb,i,*(short *)&rxF_ext[i],*(1+(short*)&rxF_ext[i]));
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	      }
#endif
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	      rxF_ext+=6;
	      dl_ch0_ext+=6;
	      dl_ch1_ext+=6;
	      dl_ch0p+=6;
	      dl_ch1p+=6;
	      
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	      rxF       = &rxdataF[aarx][1+((symbol*(frame_parms->ofdm_symbol_size)))];
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	      memcpy(dl_ch0_ext,dl_ch0p,6*sizeof(int32_t));
	      memcpy(dl_ch1_ext,dl_ch1p,6*sizeof(int32_t));
	      memcpy(rxF_ext,rxF,6*sizeof(int32_t));	      
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#ifdef DEBUG_DLSCH_DEMOD
	      for (i=0; i<6; i++) {
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		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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#ifdef DEBUG_DLSCH_DEMOD
		  printf("(pilots)extract rb %d, re %d (%d) => (%d,%d)\n",prb,i,j,*(short *)&rxF[i],*(1+(short*)&rxF[i]));
#endif
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		}
	      }
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	      rxF       = &rxdataF[aarx][1+symbol*(frame_parms->ofdm_symbol_size)];
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	      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];
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		  rxF_ext[j++]=rxF[i-6];	   
#ifdef DEBUG_DLSCH_DEMOD
		  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]));
#endif
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		}
	      }
	      
	      dl_ch0_ext+=8;
	      dl_ch1_ext+=8;
	      rxF_ext+=8;
	    } //pilots==1
	  }  // if Middle PRB
	} // if odd PRB	      	      	         
      } // if rballoc==1
    } // for prb 
  } // for aarx
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  return(nb_rb/frame_parms->nb_antennas_rx);
}

//==============================================================================================
// Auxiliary functions
//==============================================================================================

#ifdef USER_MODE

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void dump_dlsch2(PHY_VARS_UE *phy_vars_ue,uint8_t eNB_id,uint16_t coded_bits_per_codeword,int round, unsigned char harq_pid ) {
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  unsigned int nsymb = (phy_vars_ue->lte_frame_parms.Ncp == 0) ? 14 : 12;
  char fname[32],vname[32];
  int N_RB_DL=phy_vars_ue->lte_frame_parms.N_RB_DL;

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  sprintf(fname,"dlsch%d_rxF_r%d_ext0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_ext0",eNB_id,round);
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  write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->rxdataF_ext[0],12*N_RB_DL*nsymb,1,1);
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  if (phy_vars_ue->lte_frame_parms.nb_antennas_rx >1) {
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    sprintf(fname,"dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_ext1",eNB_id,round);
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    write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
  }
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  sprintf(fname,"dlsch%d_ch_r%d_ext00.m",eNB_id,round);
  sprintf(vname,"dl%d_ch_r%d_ext00",eNB_id,round);
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  write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[0],12*N_RB_DL*nsymb,1,1);
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  if (phy_vars_ue->lte_frame_parms.nb_antennas_rx == 2) {
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    sprintf(fname,"dlsch%d_ch_r%d_ext01.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext01",eNB_id,round);
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    write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
  }
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  if (phy_vars_ue->lte_frame_parms.nb_antennas_tx_eNB == 2) {
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    sprintf(fname,"dlsch%d_ch_r%d_ext10.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext10",eNB_id,round);
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    write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
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    if (phy_vars_ue->lte_frame_parms.nb_antennas_rx == 2) {
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      sprintf(fname,"dlsch%d_ch_r%d_ext11.m",eNB_id,round);
      sprintf(vname,"dl%d_ch_r%d_ext11",eNB_id,round);
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      write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
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    }
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  }
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  /*
    write_output("dlsch%d_ch_ext01.m","dl01_ch0_ext",lte_ue_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",lte_ue_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",lte_ue_pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
  */
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  sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
  sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);
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  write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_ch_rho_ext[0][0][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,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
  if (phy_vars_ue->lte_frame_parms.nb_antennas_tx_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,phy_vars_ue->lte_ue_pdsch_vars[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, phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->llr[0],coded_bits_per_codeword,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,phy_vars_ue->lte_ue_pdsch_vars[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,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_ch_magb0[0],12*N_RB_DL*nsymb,1,1);

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Raymond Knopp committed
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  //  printf("log2_maxh = %d\n",phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->log2_maxh);
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}
#endif

#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