nr_ulsch_demodulation.c 42.1 KB
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#include "PHY/defs_gNB.h"
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#include "PHY/phy_extern.h"
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#include "nr_transport_proto.h"
#include "PHY/impl_defs_top.h"
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#include "PHY/NR_TRANSPORT/nr_sch_dmrs.h"
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#include "PHY/NR_REFSIG/dmrs_nr.h"
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#include "PHY/NR_REFSIG/ptrs_nr.h"
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#include "PHY/NR_ESTIMATION/nr_ul_estimation.h"
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#include "PHY/defs_nr_common.h"
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//#define DEBUG_CH_COMP
//#define DEBUG_RB_EXT
//#define DEBUG_CH_MAG

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void nr_idft(uint32_t *z, uint32_t Msc_PUSCH)
{

#if defined(__x86_64__) || defined(__i386__)
  __m128i idft_in128[1][1200], idft_out128[1][1200];
  __m128i norm128;
#elif defined(__arm__)
  int16x8_t idft_in128[1][1200], idft_out128[1][1200];
  int16x8_t norm128;
#endif
  int16_t *idft_in0 = (int16_t*)idft_in128[0], *idft_out0 = (int16_t*)idft_out128[0];

  int i, ip;

  LOG_T(PHY,"Doing lte_idft for Msc_PUSCH %d\n",Msc_PUSCH);

  // conjugate input
  for (i = 0; i < (Msc_PUSCH>>2); i++) {
#if defined(__x86_64__)||defined(__i386__)
    *&(((__m128i*)z)[i]) = _mm_sign_epi16(*&(((__m128i*)z)[i]), *(__m128i*)&conjugate2[0]);
#elif defined(__arm__)
    *&(((int16x8_t*)z)[i]) = vmulq_s16(*&(((int16x8_t*)z)[i]), *(int16x8_t*)&conjugate2[0]);
#endif
  }

  for (i=0,ip=0; i<Msc_PUSCH; i++, ip+=4) {
    ((uint32_t*)idft_in0)[ip+0] = z[i];
  }


  switch (Msc_PUSCH) {
    case 12:
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      dft(DFT_12,(int16_t *)idft_in0, (int16_t *)idft_out0,0);
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#if defined(__x86_64__)||defined(__i386__)
      norm128 = _mm_set1_epi16(9459);
#elif defined(__arm__)
      norm128 = vdupq_n_s16(9459);
#endif

      for (i = 0; i < 12; i++) {
#if defined(__x86_64__)||defined(__i386__)
        ((__m128i*)idft_out0)[i] = _mm_slli_epi16(_mm_mulhi_epi16(((__m128i*)idft_out0)[i], norm128), 1);
#elif defined(__arm__)
        ((int16x8_t*)idft_out0)[i] = vqdmulhq_s16(((int16x8_t*)idft_out0)[i], norm128);
#endif
      }

      break;

    case 24:
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      dft(DFT_24,idft_in0, idft_out0, 1);
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      break;

    case 36:
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      dft(DFT_36,idft_in0, idft_out0, 1);
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      break;

    case 48:
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      dft(DFT_48,idft_in0, idft_out0, 1);
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      break;

    case 60:
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      dft(DFT_60,idft_in0, idft_out0, 1);
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      break;

    case 72:
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      dft(DFT_72,idft_in0, idft_out0, 1);
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      break;

    case 96:
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      dft(DFT_96,idft_in0, idft_out0, 1);
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      break;

    case 108:
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      dft(DFT_108,idft_in0, idft_out0, 1);
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      break;

    case 120:
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      dft(DFT_120,idft_in0, idft_out0, 1);
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      break;

    case 144:
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      dft(DFT_144,idft_in0, idft_out0, 1);
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      break;

    case 180:
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      dft(DFT_180,idft_in0, idft_out0, 1);
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      break;

    case 192:
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      dft(DFT_192,idft_in0, idft_out0, 1);
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      break;

    case 216:
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      dft(DFT_216,idft_in0, idft_out0, 1);
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      break;

    case 240:
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      dft(DFT_240,idft_in0, idft_out0, 1);
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      break;

    case 288:
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      dft(DFT_288,idft_in0, idft_out0, 1);
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      break;

    case 300:
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      dft(DFT_300,idft_in0, idft_out0, 1);
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      break;

    case 324:
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      dft(DFT_324,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 360:
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      dft(DFT_360,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 384:
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      dft(DFT_384,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 432:
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      dft(DFT_432,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 480:
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      dft(DFT_480,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 540:
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      dft(DFT_540,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 576:
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      dft(DFT_576,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 600:
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      dft(DFT_600,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 648:
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      dft(DFT_648,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 720:
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      dft(DFT_720,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 768:
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      dft(DFT_768,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 864:
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      dft(DFT_864,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 900:
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      dft(DFT_900,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 960:
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      dft(DFT_960,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 972:
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      dft(DFT_972,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 1080:
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      dft(DFT_1080,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 1152:
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      dft(DFT_1152,(int16_t*)idft_in0, (int16_t*)idft_out0, 1);
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      break;

    case 1200:
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      dft(DFT_1200,idft_in0, idft_out0, 1);
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      break;

    default:
      // should not be reached
      LOG_E( PHY, "Unsupported Msc_PUSCH value of %"PRIu16"\n", Msc_PUSCH );
      return;
  }



  for (i = 0, ip = 0; i < Msc_PUSCH; i++, ip+=4) {
    z[i] = ((uint32_t*)idft_out0)[ip];
  }

  // conjugate output
  for (i = 0; i < (Msc_PUSCH>>2); i++) {
#if defined(__x86_64__) || defined(__i386__)
    ((__m128i*)z)[i] = _mm_sign_epi16(((__m128i*)z)[i], *(__m128i*)&conjugate2[0]);
#elif defined(__arm__)
    *&(((int16x8_t*)z)[i]) = vmulq_s16(*&(((int16x8_t*)z)[i]), *(int16x8_t*)&conjugate2[0]);
#endif
  }

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

}
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void nr_ulsch_extract_rbs_single(int32_t **rxdataF,
                                 NR_gNB_PUSCH *pusch_vars,
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                                 unsigned char symbol,
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                                 uint8_t is_dmrs_symbol,
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                                 nfapi_nr_pusch_pdu_t *pusch_pdu,
                                 NR_DL_FRAME_PARMS *frame_parms)
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{
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  unsigned short start_re, re, nb_re_pusch;
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  unsigned char aarx;
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  uint8_t K_ptrs;
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  uint32_t rxF_ext_index = 0;
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  uint32_t ul_ch0_ext_index = 0;
  uint32_t ul_ch0_index = 0;
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  uint32_t ul_ch0_ptrs_ext_index = 0;
  uint32_t ul_ch0_ptrs_index = 0;
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  uint8_t is_ptrs_symbol_flag,k_prime;
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  uint16_t n=0, num_ptrs_symbols;
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  int16_t *rxF,*rxF_ext;
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  int *ul_ch0,*ul_ch0_ext;
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  int *ul_ch0_ptrs,*ul_ch0_ptrs_ext;
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  uint16_t n_rnti = pusch_pdu->rnti;
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  uint8_t delta = 0;
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#ifdef DEBUG_RB_EXT

  printf("--------------------symbol = %d-----------------------\n", symbol);
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  printf("--------------------ch_ext_index = %d-----------------------\n", symbol*NR_NB_SC_PER_RB * pusch_pdu->rb_size);
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#endif
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  uint8_t is_dmrs_re;
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  start_re = (frame_parms->first_carrier_offset + (pusch_pdu->rb_start * NR_NB_SC_PER_RB))%frame_parms->ofdm_symbol_size;
  nb_re_pusch = NR_NB_SC_PER_RB * pusch_pdu->rb_size;
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  is_ptrs_symbol_flag = 0;
  num_ptrs_symbols = 0;

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  K_ptrs = (pusch_pdu->pusch_ptrs.ptrs_freq_density)?4:2;
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  for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++) {
    
    rxF       = (int16_t *)&rxdataF[aarx][symbol * frame_parms->ofdm_symbol_size];
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    rxF_ext   = (int16_t *)&pusch_vars->rxdataF_ext[aarx][symbol * nb_re_pusch]; // [hna] rxdataF_ext isn't contiguous in order to solve an alignment problem ib llr computation in case of mod_order = 4, 6

    ul_ch0     = &pusch_vars->ul_ch_estimates[aarx][pusch_vars->dmrs_symbol*frame_parms->ofdm_symbol_size]; // update channel estimates if new dmrs symbol are available
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    ul_ch0_ext = &pusch_vars->ul_ch_estimates_ext[aarx][symbol*nb_re_pusch];
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    ul_ch0_ptrs     = &pusch_vars->ul_ch_ptrs_estimates[aarx][pusch_vars->ptrs_symbol_index*frame_parms->ofdm_symbol_size]; // update channel estimates if new dmrs symbol are available

    ul_ch0_ptrs_ext = &pusch_vars->ul_ch_ptrs_estimates_ext[aarx][symbol*nb_re_pusch];
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    n = 0;
    k_prime = 0;

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    for (re = 0; re < nb_re_pusch; re++) {
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      if (is_dmrs_symbol)
        is_dmrs_re = (re == get_dmrs_freq_idx_ul(n, k_prime, delta, pusch_pdu->dmrs_config_type));
      else
        is_dmrs_re = 0;
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      if (pusch_pdu->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
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        if(is_ptrs_symbol(symbol, pusch_vars->ptrs_symbols))
            is_ptrs_symbol_flag = is_ptrs_subcarrier((start_re + re) % frame_parms->ofdm_symbol_size,
                                                     n_rnti,
                                                     aarx,
                                                     pusch_pdu->dmrs_config_type,
                                                     K_ptrs,
                                                     pusch_pdu->rb_size,
                                                     pusch_pdu->pusch_ptrs.ptrs_ports_list[0].ptrs_re_offset,
                                                     start_re,
                                                     frame_parms->ofdm_symbol_size);
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        if (is_ptrs_symbol_flag == 1)
          num_ptrs_symbols++;

      }

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  #ifdef DEBUG_RB_EXT
      printf("re = %d, is_dmrs_symbol_flag = %d, symbol = %d\n", re, is_dmrs_symbol_flag, symbol);
  #endif

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      if ( is_dmrs_re == 0 && is_ptrs_symbol_flag == 0) {
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        rxF_ext[rxF_ext_index]     = (rxF[ ((start_re + re)*2)      % (frame_parms->ofdm_symbol_size*2)]);
        rxF_ext[rxF_ext_index + 1] = (rxF[(((start_re + re)*2) + 1) % (frame_parms->ofdm_symbol_size*2)]);
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        ul_ch0_ext[ul_ch0_ext_index] = ul_ch0[ul_ch0_index];
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        ul_ch0_ptrs_ext[ul_ch0_ptrs_ext_index] = ul_ch0_ptrs[ul_ch0_ptrs_index];
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  #ifdef DEBUG_RB_EXT
        printf("rxF_ext[%d] = %d\n", rxF_ext_index, rxF_ext[rxF_ext_index]);
        printf("rxF_ext[%d] = %d\n", rxF_ext_index+1, rxF_ext[rxF_ext_index+1]);
  #endif

        ul_ch0_ext_index++;
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        ul_ch0_ptrs_ext_index++;
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        rxF_ext_index +=2;
      } else {
        k_prime++;
        k_prime&=1;
        n+=(k_prime)?0:1;
      }
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      ul_ch0_index++;
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      ul_ch0_ptrs_index++;
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    }
  }
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  pusch_vars->ptrs_sc_per_ofdm_symbol = num_ptrs_symbols;

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}

void nr_ulsch_scale_channel(int **ul_ch_estimates_ext,
                            NR_DL_FRAME_PARMS *frame_parms,
                            NR_gNB_ULSCH_t **ulsch_gNB,
                            uint8_t symbol,
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                            uint8_t is_dmrs_symbol,
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                            unsigned short nb_rb,
                            pusch_dmrs_type_t pusch_dmrs_type)
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{

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

  short rb, ch_amp;
  unsigned char aatx,aarx;
  __m128i *ul_ch128, ch_amp128;

  // Determine scaling amplitude based the symbol

  ch_amp = 1024*8; //((pilots) ? (ulsch_gNB[0]->sqrt_rho_b) : (ulsch_gNB[0]->sqrt_rho_a));

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  LOG_D(PHY,"Scaling PUSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n", symbol, ch_amp, is_dmrs_symbol, nb_rb, frame_parms->Ncp, symbol);
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   // printf("Scaling PUSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);

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

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

      ul_ch128 = (__m128i *)&ul_ch_estimates_ext[aarx][symbol*nb_rb*NR_NB_SC_PER_RB];

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      if (is_dmrs_symbol==1){
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        if (pusch_dmrs_type == pusch_dmrs_type1)
          nb_rb = nb_rb>>1;
        else
          nb_rb = (2*nb_rb)/3;
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      }


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

        ul_ch128[0] = _mm_mulhi_epi16(ul_ch128[0], ch_amp128);
        ul_ch128[0] = _mm_slli_epi16(ul_ch128[0], 3);

        ul_ch128[1] = _mm_mulhi_epi16(ul_ch128[1], ch_amp128);
        ul_ch128[1] = _mm_slli_epi16(ul_ch128[1], 3);

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        if (is_dmrs_symbol) {
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          ul_ch128+=2;
        } else {
          ul_ch128[2] = _mm_mulhi_epi16(ul_ch128[2], ch_amp128);
          ul_ch128[2] = _mm_slli_epi16(ul_ch128[2], 3);
          ul_ch128+=3;

        }
      }
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    }
  }
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#endif
}

//compute average channel_level on each (TX,RX) antenna pair
void nr_ulsch_channel_level(int **ul_ch_estimates_ext,
                            NR_DL_FRAME_PARMS *frame_parms,
                            int32_t *avg,
                            uint8_t symbol,
                            uint32_t len,
                            unsigned short nb_rb)
{

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

  short rb;
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  unsigned char aatx, aarx;
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  __m128i *ul_ch128, avg128U;

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

  for (aatx = 0; aatx < frame_parms->nb_antennas_tx; aatx++)
    for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128U = _mm_setzero_si128();

      ul_ch128=(__m128i *)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];

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      for (rb = 0; rb < len/12; rb++) {
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        avg128U = _mm_add_epi32(avg128U, _mm_srai_epi32(_mm_madd_epi16(ul_ch128[0], ul_ch128[0]), x));
        avg128U = _mm_add_epi32(avg128U, _mm_srai_epi32(_mm_madd_epi16(ul_ch128[1], ul_ch128[1]), x));
        avg128U = _mm_add_epi32(avg128U, _mm_srai_epi32(_mm_madd_epi16(ul_ch128[2], ul_ch128[2]), x));
        ul_ch128+=3;
      }

      avg[(aatx<<1)+aarx] = (((int32_t*)&avg128U)[0] +
                             ((int32_t*)&avg128U)[1] +
                             ((int32_t*)&avg128U)[2] +
                             ((int32_t*)&avg128U)[3]   ) / y;

    }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

  short rb;
  unsigned char aatx, aarx, nre = 12, symbol_mod;
  int32x4_t avg128U;
  int16x4_t *ul_ch128;

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

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  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++)
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    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128U = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

      ul_ch128 = (int16x4_t *)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12];

      for (rb = 0; rb < nb_rb; rb++) {
        //  printf("rb %d : ",rb);
        //  print_shorts("ch",&ul_ch128[0]);
        avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[0], ul_ch128[0]));
        avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[1], ul_ch128[1]));
        avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[2], ul_ch128[2]));
        avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[3], ul_ch128[3]));

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        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_gNB!=1)) {
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          ul_ch128+=4;
        } else {
          avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[4], ul_ch128[4]));
          avg128U = vqaddq_s32(avg128U, vmull_s16(ul_ch128[5], ul_ch128[5]));
          ul_ch128+=6;
        }

        /*
          if (rb==0) {
          print_shorts("ul_ch128",&ul_ch128[0]);
          print_shorts("ul_ch128",&ul_ch128[1]);
          print_shorts("ul_ch128",&ul_ch128[2]);
          }
        */
      }

      if (symbol==2) //assume start symbol 2
          nre=6;
      else
          nre=12;

      avg[(aatx<<1)+aarx] = (((int32_t*)&avg128U)[0] +
                             ((int32_t*)&avg128U)[1] +
                             ((int32_t*)&avg128U)[2] +
                             ((int32_t*)&avg128U)[3]   ) / (nb_rb*nre);
    }


#endif
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}

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void nr_ulsch_channel_compensation(int **rxdataF_ext,
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                                   int **ul_ch_estimates_ext,
                                   int **ul_ch_mag,
                                   int **ul_ch_magb,
                                   int **rxdataF_comp,
                                   int **rho,
                                   NR_DL_FRAME_PARMS *frame_parms,
                                   unsigned char symbol,
                                   uint8_t is_dmrs_symbol,
                                   unsigned char mod_order,
                                   unsigned short nb_rb,
                                   unsigned char output_shift) {
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#ifdef DEBUG_CH_COMP
  int16_t *rxF, *ul_ch;
  int prnt_idx;

512

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  rxF   = (int16_t *)&rxdataF_ext[0][(symbol*nb_rb*12)];
  ul_ch = (int16_t *)&ul_ch_estimates_ext[0][symbol*nb_rb*12];

  printf("--------------------symbol = %d, mod_order = %d, output_shift = %d-----------------------\n", symbol, mod_order, output_shift);
  printf("----------------Before compansation------------------\n");

  for (prnt_idx=0;prnt_idx<12*nb_rb*2;prnt_idx++){

    printf("rxF[%d] = %d\n", prnt_idx, rxF[prnt_idx]);
    printf("ul_ch[%d] = %d\n", prnt_idx, ul_ch[prnt_idx]);

  }

#endif

#ifdef DEBUG_CH_MAG
  int16_t *ch_mag;
  int print_idx;


  ch_mag   = (int16_t *)&ul_ch_mag[0][(symbol*nb_rb*12)];

  printf("--------------------symbol = %d, mod_order = %d-----------------------\n", symbol, mod_order);
  printf("----------------Before computation------------------\n");

  for (print_idx=0;print_idx<50;print_idx++){

    printf("ch_mag[%d] = %d\n", print_idx, ch_mag[print_idx]);

  }

#endif

#if defined(__i386) || defined(__x86_64)

  unsigned short rb;
  unsigned char aatx,aarx;
  __m128i *ul_ch128,*ul_ch128_2,*ul_ch_mag128,*ul_ch_mag128b,*rxdataF128,*rxdataF_comp128,*rho128;
  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
  QAM_amp128b = _mm_setzero_si128();

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

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

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

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

      ul_ch128          = (__m128i *)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];
      ul_ch_mag128      = (__m128i *)&ul_ch_mag[(aatx<<1)+aarx][symbol*nb_rb*12];
      ul_ch_mag128b     = (__m128i *)&ul_ch_magb[(aatx<<1)+aarx][symbol*nb_rb*12];
      rxdataF128        = (__m128i *)&rxdataF_ext[aarx][symbol*nb_rb*12];
      rxdataF_comp128   = (__m128i *)&rxdataF_comp[(aatx<<1)+aarx][symbol*nb_rb*12];


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

          //print_shorts("ch:",(int16_t*)&ul_ch128[0]);

          mmtmpD0 = _mm_madd_epi16(ul_ch128[0],ul_ch128[0]);
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);

          mmtmpD1 = _mm_madd_epi16(ul_ch128[1],ul_ch128[1]);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);

          mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

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

          ul_ch_mag128[0] = _mm_unpacklo_epi16(mmtmpD0,mmtmpD0);
          ul_ch_mag128b[0] = ul_ch_mag128[0];
          ul_ch_mag128[0] = _mm_mulhi_epi16(ul_ch_mag128[0],QAM_amp128);
          ul_ch_mag128[0] = _mm_slli_epi16(ul_ch_mag128[0],1);

          // print_ints("ch: = ",(int32_t*)&mmtmpD0);
          // print_shorts("QAM_amp:",(int16_t*)&QAM_amp128);
          // print_shorts("mag:",(int16_t*)&ul_ch_mag128[0]);

          ul_ch_mag128[1] = _mm_unpackhi_epi16(mmtmpD0,mmtmpD0);
          ul_ch_mag128b[1] = ul_ch_mag128[1];
          ul_ch_mag128[1] = _mm_mulhi_epi16(ul_ch_mag128[1],QAM_amp128);
          ul_ch_mag128[1] = _mm_slli_epi16(ul_ch_mag128[1],1);

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          if (is_dmrs_symbol==0) {
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            mmtmpD0 = _mm_madd_epi16(ul_ch128[2],ul_ch128[2]);
            mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
            mmtmpD1 = _mm_packs_epi32(mmtmpD0,mmtmpD0);

            ul_ch_mag128[2] = _mm_unpacklo_epi16(mmtmpD1,mmtmpD1);
            ul_ch_mag128b[2] = ul_ch_mag128[2];

            ul_ch_mag128[2] = _mm_mulhi_epi16(ul_ch_mag128[2],QAM_amp128);
            ul_ch_mag128[2] = _mm_slli_epi16(ul_ch_mag128[2],1);
          }

          ul_ch_mag128b[0] = _mm_mulhi_epi16(ul_ch_mag128b[0],QAM_amp128b);
          ul_ch_mag128b[0] = _mm_slli_epi16(ul_ch_mag128b[0],1);


          ul_ch_mag128b[1] = _mm_mulhi_epi16(ul_ch_mag128b[1],QAM_amp128b);
          ul_ch_mag128b[1] = _mm_slli_epi16(ul_ch_mag128b[1],1);

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          if (is_dmrs_symbol==0) {
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            ul_ch_mag128b[2] = _mm_mulhi_epi16(ul_ch_mag128b[2],QAM_amp128b);
            ul_ch_mag128b[2] = _mm_slli_epi16(ul_ch_mag128b[2],1);
          }
        }

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(ul_ch128[0],rxdataF128[0]);
        //  print_ints("re",&mmtmpD0);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(ul_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:",ul_ch128);
        //  print_shorts("pack:",rxdataF_comp128);

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(ul_ch128[1],rxdataF128[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[1],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rxdataF_comp128[1] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //  print_shorts("rx:",rxdataF128+1);
        //  print_shorts("ch:",ul_ch128+1);
        //  print_shorts("pack:",rxdataF_comp128+1);

672
        if (is_dmrs_symbol==0) {
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          // multiply by conjugated channel
          mmtmpD0 = _mm_madd_epi16(ul_ch128[2],rxdataF128[2]);
          // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
          mmtmpD1 = _mm_shufflelo_epi16(ul_ch128[2],_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
          mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)conjugate);
          mmtmpD1 = _mm_madd_epi16(mmtmpD1,rxdataF128[2]);
          // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
          mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
          mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

          rxdataF_comp128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
          //  print_shorts("rx:",rxdataF128+2);
          //  print_shorts("ch:",ul_ch128+2);
          //        print_shorts("pack:",rxdataF_comp128+2);

          ul_ch128+=3;
          ul_ch_mag128+=3;
          ul_ch_mag128b+=3;
          rxdataF128+=3;
          rxdataF_comp128+=3;
        } else { // we have a smaller PUSCH in symbols with pilots so skip last group of 4 REs and increment less
          ul_ch128+=2;
          ul_ch_mag128+=2;
          ul_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }

      }
    }
  }

  if (rho) {


    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      rho128        = (__m128i *)&rho[aarx][symbol*frame_parms->N_RB_UL*12];
      ul_ch128      = (__m128i *)&ul_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_UL*12];
      ul_ch128_2    = (__m128i *)&ul_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_UL*12];

      for (rb=0; rb<nb_rb; rb++) {
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(ul_ch128[0],ul_ch128_2[0]);
        //  print_ints("re",&mmtmpD0);

        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(ul_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,ul_ch128_2[0]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //  print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //  print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //        print_ints("c0",&mmtmpD2);
        //  print_ints("c1",&mmtmpD3);
        rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);

        //print_shorts("rx:",ul_ch128_2);
        //print_shorts("ch:",ul_ch128);
        //print_shorts("pack:",rho128);

        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(ul_ch128[1],ul_ch128_2[1]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(ul_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,ul_ch128_2[1]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);


        rho128[1] =_mm_packs_epi32(mmtmpD2,mmtmpD3);
        //print_shorts("rx:",ul_ch128_2+1);
        //print_shorts("ch:",ul_ch128+1);
        //print_shorts("pack:",rho128+1);
        // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(ul_ch128[2],ul_ch128_2[2]);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(ul_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,ul_ch128_2[2]);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);

        rho128[2] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
        //print_shorts("rx:",ul_ch128_2+2);
        //print_shorts("ch:",ul_ch128+2);
        //print_shorts("pack:",rho128+2);

        ul_ch128+=3;
        ul_ch128_2+=3;
        rho128+=3;

      }

    }
  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)


  unsigned short rb;
794
  unsigned char aatx,aarx,symbol_mod,is_dmrs_symbol=0;
795 796 797 798 799 800 801 802 803 804 805 806 807

  int16x4_t *ul_ch128,*ul_ch128_2,*rxdataF128;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *ul_ch_mag128,*ul_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4;
  int16x8_t QAM_amp128,QAM_amp128b;
  int16x4x2_t *rxdataF_comp128,*rho128;

  int16_t conj[4]__attribute__((aligned(16))) = {1,-1,1,-1};
  int32x4_t output_shift128 = vmovq_n_s32(-(int32_t)output_shift);

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

  if ((symbol_mod == 0) || (symbol_mod == (4-frame_parms->Ncp))) {
808
    if (frame_parms->nb_antenna_ports_gNB==1) { // 10 out of 12 so don't reduce size
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      nb_rb=1+(5*nb_rb/6);
    }
    else {
812
      is_dmrs_symbol=1;
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    }
  }

816
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
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    if (mod_order == 4) {
      QAM_amp128  = vmovq_n_s16(QAM16_n1);  // 2/sqrt(10)
      QAM_amp128b = vmovq_n_s16(0);
    } else if (mod_order == 6) {
      QAM_amp128  = vmovq_n_s16(QAM64_n1); //
      QAM_amp128b = vmovq_n_s16(QAM64_n2);
    }
    //    printf("comp: rxdataF_comp %p, symbol %d\n",rxdataF_comp[0],symbol);

    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      ul_ch128          = (int16x4_t*)&ul_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12];
      ul_ch_mag128      = (int16x8_t*)&ul_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12];
      ul_ch_mag128b     = (int16x8_t*)&ul_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12];
      rxdataF128        = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_UL*12];
      rxdataF_comp128   = (int16x4x2_t*)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_UL*12];

      for (rb=0; rb<nb_rb; rb++) {
  if (mod_order>2) {
    // get channel amplitude if not QPSK
    mmtmpD0 = vmull_s16(ul_ch128[0], ul_ch128[0]);
    // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
    mmtmpD1 = vmull_s16(ul_ch128[1], ul_ch128[1]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
    mmtmpD0 = vmull_s16(ul_ch128[2], ul_ch128[2]);
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    mmtmpD1 = vmull_s16(ul_ch128[3], ul_ch128[3]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
849
    if (is_dmrs_symbol==0) {
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      mmtmpD0 = vmull_s16(ul_ch128[4], ul_ch128[4]);
      mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
      mmtmpD1 = vmull_s16(ul_ch128[5], ul_ch128[5]);
      mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
      mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    }

    ul_ch_mag128b[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128b);
    ul_ch_mag128b[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128b);
    ul_ch_mag128[0] = vqdmulhq_s16(mmtmpD2,QAM_amp128);
    ul_ch_mag128[1] = vqdmulhq_s16(mmtmpD3,QAM_amp128);

862
    if (is_dmrs_symbol==0) {
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      ul_ch_mag128b[2] = vqdmulhq_s16(mmtmpD4,QAM_amp128b);
      ul_ch_mag128[2]  = vqdmulhq_s16(mmtmpD4,QAM_amp128);
    }
  }

  mmtmpD0 = vmull_s16(ul_ch128[0], rxdataF128[0]);
  //mmtmpD0 = [Re(ch[0])Re(rx[0]) Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1]) Im(ch[1])Im(ch[1])]
  mmtmpD1 = vmull_s16(ul_ch128[1], rxdataF128[1]);
  //mmtmpD1 = [Re(ch[2])Re(rx[2]) Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3]) Im(ch[3])Im(ch[3])]
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  //mmtmpD0 = [Re(ch[0])Re(rx[0])+Im(ch[0])Im(ch[0]) Re(ch[1])Re(rx[1])+Im(ch[1])Im(ch[1]) Re(ch[2])Re(rx[2])+Im(ch[2])Im(ch[2]) Re(ch[3])Re(rx[3])+Im(ch[3])Im(ch[3])]

  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[0],*(int16x4_t*)conj)), rxdataF128[0]);
  //mmtmpD0 = [-Im(ch[0])Re(rx[0]) Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1]) Re(ch[1])Im(rx[1])]
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[1],*(int16x4_t*)conj)), rxdataF128[1]);
  //mmtmpD0 = [-Im(ch[2])Re(rx[2]) Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3]) Re(ch[3])Im(rx[3])]
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
  //mmtmpD1 = [-Im(ch[0])Re(rx[0])+Re(ch[0])Im(rx[0]) -Im(ch[1])Re(rx[1])+Re(ch[1])Im(rx[1]) -Im(ch[2])Re(rx[2])+Re(ch[2])Im(rx[2]) -Im(ch[3])Re(rx[3])+Re(ch[3])Im(rx[3])]

  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rxdataF_comp128[0] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
  mmtmpD0 = vmull_s16(ul_ch128[2], rxdataF128[2]);
  mmtmpD1 = vmull_s16(ul_ch128[3], rxdataF128[3]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[2],*(int16x4_t*)conj)), rxdataF128[2]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[3],*(int16x4_t*)conj)), rxdataF128[3]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));
  mmtmpD0 = vqshlq_s32(mmtmpD0,output_shift128);
  mmtmpD1 = vqshlq_s32(mmtmpD1,output_shift128);
  rxdataF_comp128[1] = vzip_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));

899
  if (is_dmrs_symbol==0) {
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017
    mmtmpD0 = vmull_s16(ul_ch128[4], rxdataF128[4]);
    mmtmpD1 = vmull_s16(ul_ch128[5], rxdataF128[5]);
    mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
         vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));

    mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[4],*(int16x4_t*)conj)), rxdataF128[4]);
    mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[5],*(int16x4_t*)conj)), rxdataF128[5]);
    mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
         vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));


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


    ul_ch128+=6;
    ul_ch_mag128+=3;
    ul_ch_mag128b+=3;
    rxdataF128+=6;
    rxdataF_comp128+=3;

  } else { // we have a smaller PUSCH in symbols with pilots so skip last group of 4 REs and increment less
    ul_ch128+=4;
    ul_ch_mag128+=2;
    ul_ch_mag128b+=2;
    rxdataF128+=4;
    rxdataF_comp128+=2;
  }
      }
    }
  }

  if (rho) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      rho128        = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_UL*12];
      ul_ch128      = (int16x4_t*)&ul_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_UL*12];
      ul_ch128_2    = (int16x4_t*)&ul_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_UL*12];
      for (rb=0; rb<nb_rb; rb++) {
  mmtmpD0 = vmull_s16(ul_ch128[0], ul_ch128_2[0]);
  mmtmpD1 = vmull_s16(ul_ch128[1], ul_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[0],*(int16x4_t*)conj)), ul_ch128_2[0]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[1],*(int16x4_t*)conj)), ul_ch128_2[1]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

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

  mmtmpD0 = vmull_s16(ul_ch128[2], ul_ch128_2[2]);
  mmtmpD1 = vmull_s16(ul_ch128[3], ul_ch128_2[3]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[2],*(int16x4_t*)conj)), ul_ch128_2[2]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[3],*(int16x4_t*)conj)), ul_ch128_2[3]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

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

  mmtmpD0 = vmull_s16(ul_ch128[0], ul_ch128_2[0]);
  mmtmpD1 = vmull_s16(ul_ch128[1], ul_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[4],*(int16x4_t*)conj)), ul_ch128_2[4]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(ul_ch128[5],*(int16x4_t*)conj)), ul_ch128_2[5]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

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


  ul_ch128+=6;
  ul_ch128_2+=6;
  rho128+=3;
      }
    }
  }
#endif


#ifdef DEBUG_CH_COMP

  rxF   = (int16_t *)&rxdataF_comp[0][(symbol*nb_rb*12)];

  printf("----------------After compansation------------------\n");

  for (prnt_idx=0;prnt_idx<12*nb_rb*2;prnt_idx++){

    printf("rxF[%d] = %d\n", prnt_idx, rxF[prnt_idx]);

  }

#endif

#ifdef DEBUG_CH_MAG


  ch_mag   = (int16_t *)&ul_ch_mag[0][(symbol*nb_rb*12)];

  printf("----------------After computation------------------\n");

  for (print_idx=0;print_idx<12*nb_rb*2;print_idx++){

    printf("ch_mag[%d] = %d\n", print_idx, ch_mag[print_idx]);

  }

#endif

}
1018 1019 1020 1021 1022 1023 1024 1025

void nr_rx_pusch(PHY_VARS_gNB *gNB,
                 uint8_t UE_id,
                 uint32_t frame,
                 uint8_t nr_tti_rx,
                 unsigned char symbol,
                 unsigned char harq_pid)
{
1026

1027
  uint8_t first_symbol_flag, aarx, aatx, dmrs_symbol_flag; // dmrs_symbol_flag, a flag to indicate DMRS REs in current symbol
1028
  uint32_t nb_re_pusch, bwp_start_subcarrier;
1029
  uint8_t L_ptrs = 0; // PTRS parameter
1030 1031
  int avgs;
  int avg[4];
1032
  NR_DL_FRAME_PARMS *frame_parms = &gNB->frame_parms;
1033
  nfapi_nr_pusch_pdu_t *rel15_ul = &gNB->ulsch[UE_id][0]->harq_processes[harq_pid]->ulsch_pdu;
1034

1035
  dmrs_symbol_flag = 0;
1036
  first_symbol_flag = 0;
1037
  gNB->pusch_vars[UE_id]->ptrs_sc_per_ofdm_symbol = 0;
1038

1039 1040 1041 1042 1043 1044
  if(symbol == rel15_ul->start_symbol_index){
    gNB->pusch_vars[UE_id]->rxdataF_ext_offset = 0;
    gNB->pusch_vars[UE_id]->dmrs_symbol = 0;
    gNB->pusch_vars[UE_id]->cl_done = 0;
    gNB->pusch_vars[UE_id]->ptrs_symbols = 0;
    first_symbol_flag = 1;
1045

1046
    if (rel15_ul->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {  // if there is ptrs pdu
1047
      L_ptrs = 1<<(rel15_ul->pusch_ptrs.ptrs_time_density);
1048 1049

      set_ptrs_symb_idx(&gNB->pusch_vars[UE_id]->ptrs_symbols,
1050 1051
                        rel15_ul->nr_of_symbols,
                        rel15_ul->start_symbol_index,
1052
                        L_ptrs,
1053
                        rel15_ul->ul_dmrs_symb_pos);
1054
    }
1055
  }
1056

1057 1058
  bwp_start_subcarrier = (rel15_ul->rb_start*NR_NB_SC_PER_RB + frame_parms->first_carrier_offset) % frame_parms->ofdm_symbol_size;

1059
  dmrs_symbol_flag = ((rel15_ul->ul_dmrs_symb_pos)>>symbol)&0x01;
1060 1061 1062 1063 1064 1065 1066

  if (dmrs_symbol_flag == 1){
    nb_re_pusch = rel15_ul->rb_size * ((rel15_ul->dmrs_config_type==pusch_dmrs_type1)?6:8);
    gNB->pusch_vars[UE_id]->dmrs_symbol = symbol;
  } else {
    nb_re_pusch = rel15_ul->rb_size * NR_NB_SC_PER_RB;
  }
1067

1068
  if (rel15_ul->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {  // if there is ptrs pdu
1069 1070
    if(is_ptrs_symbol(symbol, gNB->pusch_vars[UE_id]->ptrs_symbols))
      gNB->pusch_vars[UE_id]->ptrs_symbol_index = symbol;
1071
  }
1072

1073

1074 1075 1076
  //----------------------------------------------------------
  //--------------------- Channel estimation ---------------------
  //----------------------------------------------------------
1077
  start_meas(&gNB->ulsch_channel_estimation_stats);
1078 1079 1080 1081 1082 1083 1084
  if (dmrs_symbol_flag == 1)
    nr_pusch_channel_estimation(gNB,
                                nr_tti_rx,
                                0, // p
                                symbol,
                                bwp_start_subcarrier,
                                rel15_ul);
1085
  stop_meas(&gNB->ulsch_channel_estimation_stats);
1086 1087 1088 1089
  //----------------------------------------------------------
  //--------------------- RBs extraction ---------------------
  //----------------------------------------------------------

1090
  start_meas(&gNB->ulsch_rbs_extraction_stats);
1091 1092 1093
  nr_ulsch_extract_rbs_single(gNB->common_vars.rxdataF,
                              gNB->pusch_vars[UE_id],
                              symbol,
1094
                              dmrs_symbol_flag,
1095 1096
                              rel15_ul,
                              frame_parms);
1097
  stop_meas(&gNB->ulsch_rbs_extraction_stats);
1098 1099 1100 1101 1102 1103 1104 1105

  nr_ulsch_scale_channel(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
                         frame_parms,
                         gNB->ulsch[UE_id],
                         symbol,
                         dmrs_symbol_flag,
                         rel15_ul->rb_size,
                         rel15_ul->dmrs_config_type);
1106 1107


1108
  if (first_symbol_flag==1) {
1109

1110
    nr_ulsch_channel_level(gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
1111
                           frame_parms,
1112
                           avg,
1113
                           symbol,
1114 1115 1116
                           nb_re_pusch,
                           rel15_ul->rb_size);
     avgs = 0;
1117

1118 1119 1120
     for (aatx=0;aatx<frame_parms->nb_antennas_tx;aatx++)
       for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
         avgs = cmax(avgs,avg[(aatx<<1)+aarx]);
1121

1122
     gNB->pusch_vars[UE_id]->log2_maxh = (log2_approx(avgs)/2)+1;
1123

1124
  }
1125

1126
  start_meas(&gNB->ulsch_channel_compensation_stats);
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
  nr_ulsch_channel_compensation(gNB->pusch_vars[UE_id]->rxdataF_ext,
                                gNB->pusch_vars[UE_id]->ul_ch_estimates_ext,
                                gNB->pusch_vars[UE_id]->ul_ch_mag0,
                                gNB->pusch_vars[UE_id]->ul_ch_magb0,
                                gNB->pusch_vars[UE_id]->rxdataF_comp,
                                (frame_parms->nb_antennas_tx>1) ? gNB->pusch_vars[UE_id]->rho : NULL,
                                frame_parms,
                                symbol,
                                dmrs_symbol_flag,
                                rel15_ul->qam_mod_order,
                                rel15_ul->rb_size,
                                gNB->pusch_vars[UE_id]->log2_maxh);
1139
  stop_meas(&gNB->ulsch_channel_compensation_stats);
1140

1141 1142 1143
#ifdef NR_SC_FDMA
  nr_idft(&((uint32_t*)gNB->pusch_vars[UE_id]->rxdataF_ext[0])[symbol * rel15_ul->rb_size * NR_NB_SC_PER_RB], nb_re_pusch);
#endif
1144

1145 1146 1147
  //----------------------------------------------------------
  //-------------------- LLRs computation --------------------
  //----------------------------------------------------------
1148
  start_meas(&gNB->ulsch_llr_stats);
1149 1150 1151 1152 1153 1154 1155 1156
  nr_ulsch_compute_llr(&gNB->pusch_vars[UE_id]->rxdataF_comp[0][symbol * rel15_ul->rb_size * NR_NB_SC_PER_RB],
                       gNB->pusch_vars[UE_id]->ul_ch_mag0,
                       gNB->pusch_vars[UE_id]->ul_ch_magb0,
                       &gNB->pusch_vars[UE_id]->llr[gNB->pusch_vars[UE_id]->rxdataF_ext_offset * rel15_ul->qam_mod_order],
                       rel15_ul->rb_size,
                       nb_re_pusch,
                       symbol,
                       rel15_ul->qam_mod_order);
1157
  stop_meas(&gNB->ulsch_llr_stats);
1158

1159
  gNB->pusch_vars[UE_id]->rxdataF_ext_offset = gNB->pusch_vars[UE_id]->rxdataF_ext_offset +  nb_re_pusch - gNB->pusch_vars[UE_id]->ptrs_sc_per_ofdm_symbol;
1160
  
1161
}