nr_dlsch_demodulation.c 108 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file PHY/LTE_TRANSPORT/dlsch_demodulation.c
 * \brief Top-level routines for demodulating the PDSCH physical channel from 38-211, V15.2 2018-06
 * \author H.Wang
 * \date 2018
 * \version 0.1
 * \company Eurecom
 * \note
 * \warning
 */
#include "PHY/defs_nr_UE.h"
#include "PHY/phy_extern_nr_ue.h"
#include "nr_transport_proto_ue.h"
//#include "SCHED/defs.h"
//#include "PHY/defs.h"
//#include "extern.h"
#include "PHY/sse_intrin.h"
#include "T.h"
Laurent's avatar
Laurent committed
39
#include "openair1/PHY/NR_TRANSPORT/nr_dlsch.h"
40 41 42 43 44 45 46 47 48 49 50

#ifndef USER_MODE
#define NOCYGWIN_STATIC static
#else
#define NOCYGWIN_STATIC
#endif

/* dynamic shift for LLR computation for TM3/4
 * set as command line argument, see lte-softmodem.c
 * default value: 0
 */
Hongzhi Wang's avatar
Hongzhi Wang committed
51
int16_t nr_dlsch_demod_shift = 0;
52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87
//int16_t interf_unaw_shift = 13;

//#define DEBUG_HARQ

//#define DEBUG_PHY 1
//#define DEBUG_DLSCH_DEMOD 1



// [MCS][i_mod (0,1,2) = (2,4,6)]
//unsigned char offset_mumimo_llr_drange_fix=0;
//inferference-free case
/*unsigned char interf_unaw_shift_tm4_mcs[29]={5, 3, 4, 3, 3, 2, 1, 1, 2, 0, 1, 1, 1, 1, 0, 0,
                                             1, 1, 1, 1, 0, 2, 1, 0, 1, 0, 1, 0, 0} ;*/

//unsigned char interf_unaw_shift_tm1_mcs[29]={5, 5, 4, 3, 3, 3, 2, 2, 4, 4, 2, 3, 3, 3, 1, 1,
//                                          0, 1, 1, 2, 5, 4, 4, 6, 5, 1, 0, 5, 6} ; // mcs 21, 26, 28 seem to be errorneous

/*
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
{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
*/
 /*
 //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
 */
//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}};


extern void print_shorts(char *s,int16_t *x);

laurent's avatar
laurent committed
88
static void nr_dlsch_dual_stream_correlation_core(int **dl_ch_estimates_ext,
89 90 91 92 93 94 95
						  int **dl_ch_estimates_ext_i,
						  int **dl_ch_rho_ext,
						  unsigned char n_tx,
						  unsigned char n_rx,
						  unsigned char output_shift,
						  int length,
						  int start_point);
laurent's avatar
laurent committed
96 97

static void nr_dlsch_layer_demapping(int16_t **llr_cw,
98 99 100 101
				     uint8_t Nl,
				     uint8_t mod_order,
				     uint16_t length,
				     int16_t **llr_layers);
102 103

int nr_rx_pdsch(PHY_VARS_NR_UE *ue,
104 105 106 107 108 109 110 111 112 113
		PDSCH_t type,
		unsigned char eNB_id,
		unsigned char eNB_id_i, //if this == ue->n_connected_eNB, we assume MU interference
		uint32_t frame,
		uint8_t nr_tti_rx,
		unsigned char symbol,
		unsigned char first_symbol_flag,
		RX_type_t rx_type,
		unsigned char i_mod,
		unsigned char harq_pid)
114 115 116 117 118 119 120 121 122
{

  NR_UE_COMMON *common_vars  = &ue->common_vars;
  NR_UE_PDSCH **pdsch_vars;
  NR_DL_FRAME_PARMS *frame_parms    = &ue->frame_parms;
  PHY_NR_MEASUREMENTS *measurements = &ue->measurements;
  NR_UE_DLSCH_t   **dlsch;

  int avg[4];
Hongzhi Wang's avatar
Hongzhi Wang committed
123 124
//  int avg_0[2];
//  int avg_1[2];
125 126 127 128 129

#if UE_TIMING_TRACE
  uint8_t slot = 0;
#endif

laurent's avatar
laurent committed
130
  unsigned char aatx=0,aarx=0;
131

132
  unsigned short nb_rb = 0, round;
Hongzhi Wang's avatar
Hongzhi Wang committed
133
  int avgs = 0;// rb;
134 135 136 137 138 139 140 141 142 143 144
  NR_DL_UE_HARQ_t *dlsch0_harq,*dlsch1_harq = 0;

  uint8_t beamforming_mode;

  int32_t **rxdataF_comp_ptr;
  int32_t **dl_ch_mag_ptr;
  int32_t codeword_TB0 = -1;
  int32_t codeword_TB1 = -1;

  //to be updated higher layer
  unsigned short start_rb = 0;
hongzhi wang's avatar
hongzhi wang committed
145
  unsigned short nb_rb_pdsch = 50;
hongzhi wang's avatar
hongzhi wang committed
146 147
  int16_t  *pllr_symbol_cw0;
  int16_t  *pllr_symbol_cw1;
148 149
  int16_t  *pllr_symbol_layer0;
  int16_t  *pllr_symbol_layer1;
yilmazt's avatar
yilmazt committed
150 151
  //int16_t  *pllr_symbol_cw0_deint;
  //int16_t  *pllr_symbol_cw1_deint;
hongzhi wang's avatar
hongzhi wang committed
152
  uint32_t llr_offset_symbol;
yilmazt's avatar
yilmazt committed
153
  //uint16_t bundle_L = 2;
154
  uint8_t pilots=0;
155 156
  uint16_t n_tx=1, n_rx=1;
  int32_t median[16];
157
  uint32_t len;
hongzhi wang's avatar
hongzhi wang committed
158
  
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176
  switch (type) {
  case SI_PDSCH:
    pdsch_vars = &ue->pdsch_vars_SI[eNB_id];
    dlsch = &ue->dlsch_SI[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
    beamforming_mode  = 0;
    break;

  case RA_PDSCH:
    pdsch_vars = &ue->pdsch_vars_ra[eNB_id];
    dlsch = &ue->dlsch_ra[eNB_id];
    dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
    beamforming_mode  = 0;
    break;

  case PDSCH:
    pdsch_vars = ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]];
    dlsch = ue->dlsch[ue->current_thread_id[nr_tti_rx]][eNB_id];
177 178


179 180
  dlsch[0]->harq_processes[harq_pid]->Qm = nr_get_Qm_dl(dlsch[0]->harq_processes[harq_pid]->mcs, dlsch[0]->harq_processes[harq_pid]->mcs_table);
  dlsch[0]->harq_processes[harq_pid]->R = nr_get_code_rate_dl(dlsch[0]->harq_processes[harq_pid]->mcs, dlsch[0]->harq_processes[harq_pid]->mcs_table);
hongzhi wang's avatar
hongzhi wang committed
181
  
182
  //printf("status TB0 = %d, status TB1 = %d \n", dlsch[0]->harq_processes[harq_pid]->status, dlsch[1]->harq_processes[harq_pid]->status);
183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218
    LOG_D(PHY,"AbsSubframe %d.%d / Sym %d harq_pid %d,  harq status %d.%d \n",
                   frame,nr_tti_rx,symbol,harq_pid,
                   dlsch[0]->harq_processes[harq_pid]->status,
                   dlsch[1]->harq_processes[harq_pid]->status);

    if ((dlsch[0]->harq_processes[harq_pid]->status == ACTIVE) &&
        (dlsch[1]->harq_processes[harq_pid]->status == ACTIVE)){
      codeword_TB0 = dlsch[0]->harq_processes[harq_pid]->codeword;
      codeword_TB1 = dlsch[1]->harq_processes[harq_pid]->codeword;
      dlsch0_harq = dlsch[codeword_TB0]->harq_processes[harq_pid];
      dlsch1_harq = dlsch[codeword_TB1]->harq_processes[harq_pid];
#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming both TBs are active\n");
#endif
    }
     else if ((dlsch[0]->harq_processes[harq_pid]->status == ACTIVE) &&
              (dlsch[1]->harq_processes[harq_pid]->status != ACTIVE) ) {
      codeword_TB0 = dlsch[0]->harq_processes[harq_pid]->codeword;
      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
      dlsch1_harq = NULL;
      codeword_TB1 = -1;
#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming only TB0 is active\n");
#endif
    }
     else if ((dlsch[0]->harq_processes[harq_pid]->status != ACTIVE) &&
              (dlsch[1]->harq_processes[harq_pid]->status == ACTIVE) ){
      codeword_TB1 = dlsch[1]->harq_processes[harq_pid]->codeword;
      dlsch0_harq  = dlsch[1]->harq_processes[harq_pid];
      dlsch1_harq  = NULL;
      codeword_TB0 = -1;
#ifdef DEBUG_HARQ
      printf("[DEMOD] I am assuming only TB1 is active, it is in cw %d\n", dlsch0_harq->codeword);
#endif
    }
    else {
laurent's avatar
laurent committed
219
      LOG_E(PHY,"[UE][FATAL] nr_tti_rx %d: no active DLSCH\n",nr_tti_rx);
220 221 222 223 224 225
      return(-1);
    }
    beamforming_mode  = ue->transmission_mode[eNB_id]<7?0:ue->transmission_mode[eNB_id];
    break;

  default:
laurent's avatar
laurent committed
226
    LOG_E(PHY,"[UE][FATAL] nr_tti_rx %d: Unknown PDSCH format %d\n",nr_tti_rx,type);
227 228 229 230 231 232 233 234
    return(-1);
    break;
  }
#ifdef DEBUG_HARQ
  printf("[DEMOD] MIMO mode = %d\n", dlsch0_harq->mimo_mode);
  printf("[DEMOD] cw for TB0 = %d, cw for TB1 = %d\n", codeword_TB0, codeword_TB1);
#endif

235 236 237
  start_rb = dlsch0_harq->start_rb;
  nb_rb_pdsch =  dlsch0_harq->nb_rb;

238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266
  DevAssert(dlsch0_harq);
  round = dlsch0_harq->round;
  //printf("round = %d\n", round);

  if (eNB_id > 2) {
    LOG_W(PHY,"dlsch_demodulation.c: Illegal eNB_id %d\n",eNB_id);
    return(-1);
  }

  if (!common_vars) {
    LOG_W(PHY,"dlsch_demodulation.c: Null common_vars\n");
    return(-1);
  }

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

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

  if (!frame_parms) {
    LOG_W(PHY,"dlsch_demodulation.c: Null frame_parms\n");
    return(-1);
  }

Hongzhi Wang's avatar
Hongzhi Wang committed
267
  if (dlsch0_harq->mimo_mode>NR_DUALSTREAM) {
268 269 270 271 272
    LOG_E(PHY,"This transmission mode is not yet supported!\n");
    return(-1);
  }


Hongzhi Wang's avatar
Hongzhi Wang committed
273
  if (dlsch0_harq->mimo_mode==NR_DUALSTREAM)  {
274 275 276 277
    DevAssert(dlsch1_harq);
  }

#if UE_TIMING_TRACE
278
  if(symbol > ue->frame_parms.symbols_per_slot>>1)
279 280 281 282 283 284 285 286
  {
      slot = 1;
  }
#endif

#ifdef DEBUG_HARQ
  printf("Demod  dlsch0_harq->pmi_alloc %d\n",  dlsch0_harq->pmi_alloc);
#endif
287

288
  pilots = ((1<<symbol)&dlsch0_harq->dlDmrsSymbPos)>0 ? 1 : 0;
289

290
  if (frame_parms->nb_antenna_ports_gNB>1 && beamforming_mode==0) {
291
#ifdef DEBUG_DLSCH_MOD
292
    LOG_I(PHY,"dlsch: using pmi %x (%p)\n",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc),dlsch[0]);
293 294 295 296 297
#endif

#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
298
    nb_rb = nr_dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
299 300 301 302 303 304 305 306 307 308 309 310 311
				      pdsch_vars[eNB_id]->dl_ch_estimates,
				      pdsch_vars[eNB_id]->rxdataF_ext,
				      pdsch_vars[eNB_id]->dl_ch_estimates_ext,
				      dlsch0_harq->pmi_alloc,
				      pdsch_vars[eNB_id]->pmi_ext,
				      symbol,
				      pilots,
				      start_rb,
				      nb_rb_pdsch,
				      nr_tti_rx,
				      ue->high_speed_flag,
				      frame_parms,
				      dlsch0_harq->mimo_mode);
312
#ifdef DEBUG_DLSCH_MOD
313
      printf("dlsch: using pmi %lx, pmi_ext ",pmi2hex_2Ar1(dlsch0_harq->pmi_alloc));
314 315 316 317 318 319 320
       for (rb=0;rb<nb_rb;rb++)
          printf("%d",pdsch_vars[eNB_id]->pmi_ext[rb]);
       printf("\n");
#endif

   if (rx_type >= rx_IC_single_stream) {
      if (eNB_id_i<ue->n_connected_eNB) // we are in TM5
321
      nb_rb = nr_dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
322
    		  	  	  	  	  	       pdsch_vars[eNB_id]->dl_ch_estimates,
323 324 325 326 327
                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                       dlsch0_harq->pmi_alloc,
                                       pdsch_vars[eNB_id_i]->pmi_ext,
                                       symbol,
328
									   pilots,
329 330
									   start_rb,
									   nb_rb_pdsch,
331 332 333 334 335
                                       nr_tti_rx,
                                       ue->high_speed_flag,
                                       frame_parms,
                                       dlsch0_harq->mimo_mode);
      else
336
        nb_rb = nr_dlsch_extract_rbs_dual(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
337
        							   pdsch_vars[eNB_id]->dl_ch_estimates,
338 339 340 341 342
                                       pdsch_vars[eNB_id_i]->rxdataF_ext,
                                       pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                       dlsch0_harq->pmi_alloc,
                                       pdsch_vars[eNB_id_i]->pmi_ext,
                                       symbol,
343
									   pilots,
344 345
									   start_rb,
									   nb_rb_pdsch,
346 347 348 349 350
                                       nr_tti_rx,
                                       ue->high_speed_flag,
                                       frame_parms,
                                       dlsch0_harq->mimo_mode);
    }
351
  } else if (beamforming_mode==0) { //else if nb_antennas_ports_gNB==1 && beamforming_mode == 0
hongzhi wang's avatar
hongzhi wang committed
352
		  //printf("start nr dlsch extract nr_tti_rx %d thread id %d \n", nr_tti_rx, ue->current_thread_id[nr_tti_rx]);
353
    nb_rb = nr_dlsch_extract_rbs_single(common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF,
354 355 356 357 358 359 360 361 362 363 364 365
					pdsch_vars[eNB_id]->dl_ch_estimates,
					pdsch_vars[eNB_id]->rxdataF_ext,
					pdsch_vars[eNB_id]->dl_ch_estimates_ext,
					dlsch0_harq->pmi_alloc,
					pdsch_vars[eNB_id]->pmi_ext,
					symbol,
					pilots,
					start_rb,
					nb_rb_pdsch,
					nr_tti_rx,
					ue->high_speed_flag,
					frame_parms);
366

Hongzhi Wang's avatar
Hongzhi Wang committed
367
  } /*else if(beamforming_mode>7) {
368 369 370 371 372 373 374 375 376
    LOG_W(PHY,"dlsch_demodulation: beamforming mode not supported yet.\n");
  }*/

  //printf("nb_rb = %d, eNB_id %d\n",nb_rb,eNB_id);
  if (nb_rb==0) {
    LOG_D(PHY,"dlsch_demodulation.c: nb_rb=0\n");
    return(-1);
  }

377
  len = (pilots==1)? (nb_rb*6):(nb_rb*12);
378
  
379
#if UE_TIMING_TRACE
380
  stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
381
#if DISABLE_LOG_X
382 383
  printf("[AbsSFN %u.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction %5.2f \n",
	 frame,nr_tti_rx,slot,symbol,ue->high_speed_flag,type,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
384
#else
385 386
  LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d Flag %d type %d: Pilot/Data extraction %5.2f \n",
	frame,nr_tti_rx,slot,symbol,ue->high_speed_flag,type,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
387 388
#endif
#endif
389
  
390
#if UE_TIMING_TRACE
391
  start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
392
#endif
393
  n_tx = frame_parms->nb_antenna_ports_gNB;
394
  n_rx = frame_parms->nb_antennas_rx;
395
  
396
  nr_dlsch_scale_channel(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
397 398 399 400 401
			 frame_parms,
			 dlsch,
			 symbol,
			 pilots,
			 nb_rb);
402 403 404 405

#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
406
    printf("[AbsSFN %u.%d] Slot%d Symbol %d: Channel Scale %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
407
#else
frtabu's avatar
frtabu committed
408
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d: Channel Scale  %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
409 410 411 412 413 414 415 416
#endif
#endif

#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
  if (first_symbol_flag==1) {
    if (beamforming_mode==0){
Hongzhi Wang's avatar
Hongzhi Wang committed
417
      if (dlsch0_harq->mimo_mode<NR_DUALSTREAM) {
418
        nr_dlsch_channel_level(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
419 420 421 422 423
			       frame_parms,
			       avg,
			       symbol,
			       len,
			       nb_rb);
424
        avgs = 0;
425
        for (aatx=0;aatx<frame_parms->nb_antenna_ports_gNB;aatx++)
426 427 428
          for (aarx=0;aarx<frame_parms->nb_antennas_rx;aarx++)
            avgs = cmax(avgs,avg[(aatx<<1)+aarx]);

429
        pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2)+3;
430
     }
Hongzhi Wang's avatar
Hongzhi Wang committed
431
     else if (dlsch0_harq->mimo_mode == NR_DUALSTREAM)
432
     {
433 434 435 436
    	 nr_dlsch_channel_level_median(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
    	                             median,
    	                             n_tx,
    	                             n_rx,
437
    	                             2*len,// subcarriers Re Im
438 439 440 441 442 443 444 445 446 447 448 449
    	                             0);

    	  for (aatx = 0; aatx < n_tx; ++aatx)
    	  {
    	    for (aarx = 0; aarx < n_rx; ++aarx)
    	    {
    	      avgs = cmax(avgs, median[aatx*n_rx + aarx]);
    	    }
    	  }

    	  pdsch_vars[eNB_id]->log2_maxh = (log2_approx(avgs)/2) + 1; // this might need to be tuned

Hongzhi Wang's avatar
Hongzhi Wang committed
450
     }
451
    }
452 453 454 455 456 457
    //#ifdef UE_DEBUG_TRACE
    LOG_D(PHY,"[DLSCH] AbsSubframe %d.%d log2_maxh = %d [log2_maxh0 %d log2_maxh1 %d] (%d,%d)\n",
	  frame%1024,nr_tti_rx, pdsch_vars[eNB_id]->log2_maxh,
	  pdsch_vars[eNB_id]->log2_maxh0,
	  pdsch_vars[eNB_id]->log2_maxh1,
	  avg[0],avgs);
458
    //LOG_D(PHY,"[DLSCH] mimo_mode = %d\n", dlsch0_harq->mimo_mode);
459
    //#endif
460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484

    //wait until pdcch is decoded
    //proc->channel_level = 1;
  }

  /*
  uint32_t wait = 0;
  while(proc->channel_level == 0)
  {
      usleep(1);
      wait++;
  }
  */

#if T_TRACER
    if (type == PDSCH)
    {
      T(T_UE_PHY_PDSCH_ENERGY, T_INT(eNB_id),  T_INT(0), T_INT(frame%1024), T_INT(nr_tti_rx),
                               T_INT(avg[0]), T_INT(avg[1]),    T_INT(avg[2]),             T_INT(avg[3]));
    }
#endif

#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
485
    printf("[AbsSFN %u.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level %5.2f \n",frame,nr_tti_rx,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
486
#else
frtabu's avatar
frtabu committed
487
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d first_symbol_flag %d: Channel Level  %5.2f \n",frame,nr_tti_rx,slot,symbol,first_symbol_flag,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
488 489 490 491 492 493 494 495
#endif
#endif


#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
// Now channel compensation
Hongzhi Wang's avatar
Hongzhi Wang committed
496
  if (dlsch0_harq->mimo_mode<NR_DUALSTREAM) {
497 498 499 500 501 502 503 504
    nr_dlsch_channel_compensation(pdsch_vars[eNB_id]->rxdataF_ext,
                               pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_magb0,
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               (aatx>1) ? pdsch_vars[eNB_id]->rho : NULL,
                               frame_parms,
                               symbol,
505
							   pilots,
506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546
                               first_symbol_flag,
                               dlsch0_harq->Qm,
                               nb_rb,
                               pdsch_vars[eNB_id]->log2_maxh,
                               measurements); // log2_maxh+I0_shift
 /*if (symbol == 5) {
     write_output("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
 } */

    /*if ((rx_type==rx_IC_single_stream) &&
        (eNB_id_i<ue->n_connected_eNB)) {
         nr_dlsch_channel_compensation(pdsch_vars[eNB_id_i]->rxdataF_ext,
                                 pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                 pdsch_vars[eNB_id_i]->dl_ch_mag0,
                                 pdsch_vars[eNB_id_i]->dl_ch_magb0,
                                 pdsch_vars[eNB_id_i]->rxdataF_comp0,
                                 (aatx>1) ? pdsch_vars[eNB_id_i]->rho : NULL,
                                 frame_parms,
                                 symbol,
                                 first_symbol_flag,
                                 i_mod,
                                 nb_rb,
                                 pdsch_vars[eNB_id]->log2_maxh,
                                 measurements); // log2_maxh+I0_shift
#ifdef DEBUG_PHY
      if (symbol == 5) {
        write_output("rxF_comp_d.m","rxF_c_d",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
        write_output("rxF_comp_i.m","rxF_c_i",&pdsch_vars[eNB_id_i]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);
      }
#endif

      dlsch_dual_stream_correlation(frame_parms,
                                    symbol,
                                    nb_rb,
                                    pdsch_vars[eNB_id]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id_i]->dl_ch_estimates_ext,
                                    pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                    pdsch_vars[eNB_id]->log2_maxh);
    }*/
  }

Hongzhi Wang's avatar
Hongzhi Wang committed
547
  else if (dlsch0_harq->mimo_mode == NR_DUALSTREAM){
548 549 550 551 552 553 554 555 556 557
	  nr_dlsch_channel_compensation_core(pdsch_vars[eNB_id]->rxdataF_ext,
			  	  	  	  	  	  	  	pdsch_vars[eNB_id]->dl_ch_estimates_ext,
										pdsch_vars[eNB_id]->dl_ch_mag0,
										pdsch_vars[eNB_id]->dl_ch_magb0,
										pdsch_vars[eNB_id]->rxdataF_comp0, //rxdataF_comp
	                                    NULL,
	                                    n_tx,
	                                    n_rx,
										dlsch0_harq->Qm,
										pdsch_vars[eNB_id]->log2_maxh,
558
	                                    2*len, // subcarriers Re Im
559
	                                    0); // we start from the beginning of the vector
560 561 562 563 564 565 566
  /*   if (symbol == 5) {
     write_output("rxF_comp_d00.m","rxF_c_d00",&pdsch_vars[eNB_id]->rxdataF_comp0[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
     write_output("rxF_comp_d01.m","rxF_c_d01",&pdsch_vars[eNB_id]->rxdataF_comp0[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rxF_comp_d10.m","rxF_c_d10",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rxF_comp_d11.m","rxF_c_d11",&pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
        } */
      // compute correlation between signal and interference channels (rho12 and rho21)
567 568 569 570 571 572
        nr_dlsch_dual_stream_correlation_core(pdsch_vars[eNB_id]->dl_ch_estimates_ext,
        									 &(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
											 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
                                             n_tx,
                                             n_rx,
											 pdsch_vars[eNB_id]->log2_maxh,
573
                                             2*len,
574
                                             0);
575
        //printf("rho stream1 =%d\n", &pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round] );
576 577 578 579 580 581
        nr_dlsch_dual_stream_correlation_core(&(pdsch_vars[eNB_id]->dl_ch_estimates_ext[2]),
        									pdsch_vars[eNB_id]->dl_ch_estimates_ext,
											pdsch_vars[eNB_id]->dl_ch_rho2_ext,
                                            n_tx,
                                            n_rx,
       										pdsch_vars[eNB_id]->log2_maxh,
582
                                            2*len,
583
                                            0);
584 585 586 587 588 589 590 591 592
    //  printf("rho stream2 =%d\n",&pdsch_vars[eNB_id]->dl_ch_rho2_ext );
      //printf("TM3 log2_maxh : %d\n",pdsch_vars[eNB_id]->log2_maxh);
  /*     if (symbol == 5) {
     write_output("rho0_0.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
     write_output("rho2_0.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rho0_1.m.m","rho0_1",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
     write_output("rho2_1.m","rho2_1",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[1][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be QAM
        } */

593
    }
594 595 596 597

#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
598
    printf("[AbsSFN %u.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp %5.2f \n",frame,nr_tti_rx,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
599
#else
frtabu's avatar
frtabu committed
600
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d log2_maxh %d channel_level %d: Channel Comp  %5.2f \n",frame,nr_tti_rx,slot,symbol,pdsch_vars[eNB_id]->log2_maxh,proc->channel_level,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
601 602 603 604 605 606 607 608
#endif
#endif
// MRC
#if UE_TIMING_TRACE
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif

    if (frame_parms->nb_antennas_rx > 1) {
Hongzhi Wang's avatar
Hongzhi Wang committed
609
    if (dlsch0_harq->mimo_mode == NR_DUALSTREAM){
610 611 612 613 614 615 616 617 618 619
        nr_dlsch_detection_mrc_core(pdsch_vars[eNB_id]->rxdataF_comp0,
                                   NULL,
								   pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
								   pdsch_vars[eNB_id]->dl_ch_rho2_ext,
								   pdsch_vars[eNB_id]->dl_ch_mag0,
								   pdsch_vars[eNB_id]->dl_ch_magb0,
                                   NULL,
                                   NULL,
                                   n_tx,
                                   n_rx,
620
                                   2*len,
621
                                   0);
622 623 624 625 626 627 628
    /*   if (symbol == 5) {
     write_output("rho0_mrc.m","rho0_0",&pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round][0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);// should be QAM
     write_output("rho2_mrc.m","rho2_0",&pdsch_vars[eNB_id]->dl_ch_rho2_ext[0][symbol*frame_parms->N_RB_DL*12],frame_parms->N_RB_DL*12,1,1);//should be almost 0
        } */
    }
  }

hongzhi wang's avatar
hongzhi wang committed
629
      //printf("start compute LLR\n");
Hongzhi Wang's avatar
Hongzhi Wang committed
630
  if (dlsch0_harq->mimo_mode == NR_DUALSTREAM)  {
631 632 633 634 635 636 637 638
    rxdataF_comp_ptr = pdsch_vars[eNB_id]->rxdataF_comp1[harq_pid][round];
    dl_ch_mag_ptr = pdsch_vars[eNB_id]->dl_ch_mag1[harq_pid][round];
  }
  else {
    rxdataF_comp_ptr = pdsch_vars[eNB_id_i]->rxdataF_comp0;
    dl_ch_mag_ptr = pdsch_vars[eNB_id_i]->dl_ch_mag0;
    //i_mod should have been passed as a parameter
  }
hongzhi wang's avatar
hongzhi wang committed
639
  
640 641 642
#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
643
    printf("[AbsSFN %u.%d] Slot%d Symbol %d: Channel Combine %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
644
#else
frtabu's avatar
frtabu committed
645
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d: Channel Combine  %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
646 647 648 649
#endif
#endif

#if UE_TIMING_TRACE
650

651 652 653 654 655
    start_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#endif
  //printf("LLR dlsch0_harq->Qm %d rx_type %d cw0 %d cw1 %d symbol %d \n",dlsch0_harq->Qm,rx_type,codeword_TB0,codeword_TB1,symbol);
  // compute LLRs
  // -> // compute @pointer where llrs should filled for this ofdm-symbol
hongzhi wang's avatar
hongzhi wang committed
656

657
    if (first_symbol_flag==1) pdsch_vars[eNB_id]->llr_offset[symbol-1] = 0;
hongzhi wang's avatar
hongzhi wang committed
658
  llr_offset_symbol = pdsch_vars[eNB_id]->llr_offset[symbol-1];
hongzhi wang's avatar
hongzhi wang committed
659 660
  //pllr_symbol_cw0_deint  = (int8_t*)pdsch_vars[eNB_id]->llr[0];
  //pllr_symbol_cw1_deint  = (int8_t*)pdsch_vars[eNB_id]->llr[1];
661 662 663 664
  pllr_symbol_layer0 = pdsch_vars[eNB_id]->layer_llr[0];
  pllr_symbol_layer1 = pdsch_vars[eNB_id]->layer_llr[1];
  pllr_symbol_layer0 += llr_offset_symbol;
  pllr_symbol_layer1 += llr_offset_symbol;
hongzhi wang's avatar
hongzhi wang committed
665 666
  pllr_symbol_cw0 = pdsch_vars[eNB_id]->llr[0];
  pllr_symbol_cw1 = pdsch_vars[eNB_id]->llr[1];
667 668
  pllr_symbol_cw0 += llr_offset_symbol;
  pllr_symbol_cw1 += llr_offset_symbol;
hongzhi wang's avatar
hongzhi wang committed
669
  
670
  pdsch_vars[eNB_id]->llr_offset[symbol] = len*dlsch0_harq->Qm + llr_offset_symbol;
hongzhi wang's avatar
hongzhi wang committed
671
 
hongzhi wang's avatar
hongzhi wang committed
672 673
  /*LOG_I(PHY,"compute LLRs [symbol %d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d @LLR Buff %x @LLR Buff(symb) %x\n",
             symbol,
674 675 676 677
             nb_rb,dlsch0_harq->Qm,
             pdsch_vars[eNB_id]->llr_length[symbol],
             pdsch_vars[eNB_id]->llr_offset[symbol],
             (int16_t*)pdsch_vars[eNB_id]->llr[0],
hongzhi wang's avatar
hongzhi wang committed
678 679
             pllr_symbol_cw0);*/
             
hongzhi wang's avatar
hongzhi wang committed
680
             /*printf("compute LLRs [symbol %d] NbRB %d Qm %d LLRs-Length %d LLR-Offset %d @LLR Buff %p @LLR Buff(symb) %p\n",
hongzhi wang's avatar
hongzhi wang committed
681 682 683 684
             symbol,
             nb_rb,dlsch0_harq->Qm,
             pdsch_vars[eNB_id]->llr_length[symbol],
             pdsch_vars[eNB_id]->llr_offset[symbol],
hongzhi wang's avatar
hongzhi wang committed
685 686
             pdsch_vars[eNB_id]->llr[0],
             pllr_symbol_cw0);*/
687 688 689 690

  switch (dlsch0_harq->Qm) {
  case 2 :
    if ((rx_type==rx_standard) || (codeword_TB1 == -1)) {
Hongzhi Wang's avatar
Hongzhi Wang committed
691
        nr_dlsch_qpsk_llr(frame_parms,
692
                       pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
693
                       pllr_symbol_cw0,
694
                       symbol,
695
					   len,
696 697 698 699 700 701
                       first_symbol_flag,
                       nb_rb,
                       beamforming_mode);

    } else if (codeword_TB0 == -1){

Hongzhi Wang's avatar
Hongzhi Wang committed
702
        nr_dlsch_qpsk_llr(frame_parms,
703
                       pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
704
                       pllr_symbol_cw1,
705
                       symbol,
706
					   len,
707 708 709 710 711 712
                       first_symbol_flag,
                       nb_rb,
                       beamforming_mode);
    }
      else if (rx_type >= rx_IC_single_stream) {
        if (dlsch1_harq->Qm == 2) {
Hongzhi Wang's avatar
Hongzhi Wang committed
713
          nr_dlsch_qpsk_qpsk_llr(frame_parms,
714 715 716
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
717
                              pdsch_vars[eNB_id]->layer_llr[0],
718
                              symbol,len,first_symbol_flag,nb_rb,
719 720 721
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
722
            nr_dlsch_qpsk_qpsk_llr(frame_parms,
723 724 725
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
726
                                pdsch_vars[eNB_id]->layer_llr[1],
727
                                symbol,len,first_symbol_flag,nb_rb,
728 729 730 731 732
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
        else if (dlsch1_harq->Qm == 4) {
Hongzhi Wang's avatar
Hongzhi Wang committed
733
          nr_dlsch_qpsk_16qam_llr(frame_parms,
734 735 736 737
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
738
                               pdsch_vars[eNB_id]->layer_llr[0],
739 740 741 742
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
743
            nr_dlsch_16qam_qpsk_llr(frame_parms,
744 745 746 747
                                 rxdataF_comp_ptr,
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                 dl_ch_mag_ptr,
                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
748
                                 pdsch_vars[eNB_id]->layer_llr[1],
749 750 751 752 753 754
                                 symbol,first_symbol_flag,nb_rb,
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
        else {
Hongzhi Wang's avatar
Hongzhi Wang committed
755
          nr_dlsch_qpsk_64qam_llr(frame_parms,
756 757 758 759
                               pdsch_vars[eNB_id]->rxdataF_comp0,
                               rxdataF_comp_ptr,//i
                               dl_ch_mag_ptr,//i
                               pdsch_vars[eNB_id]->dl_ch_rho2_ext,
760
                               pdsch_vars[eNB_id]->layer_llr[0],
761 762 763 764
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128);
          if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
765
            nr_dlsch_64qam_qpsk_llr(frame_parms,
766 767 768 769
                                 rxdataF_comp_ptr,
                                 pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                 dl_ch_mag_ptr,
                                 pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
770
                                 pdsch_vars[eNB_id]->layer_llr[1],
771 772 773 774 775 776 777 778 779
                                 symbol,first_symbol_flag,nb_rb,
                                 adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                                 pdsch_vars[eNB_id]->llr128_2ndstream);
          }
        }
      }
    break;
  case 4 :
    if ((rx_type==rx_standard ) || (codeword_TB1 == -1)) {
Hongzhi Wang's avatar
Hongzhi Wang committed
780
      nr_dlsch_16qam_llr(frame_parms,
781 782 783
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
784
                      symbol,len,first_symbol_flag,nb_rb,
785 786 787
                      pdsch_vars[eNB_id]->llr128,
                      beamforming_mode);
    } else if (codeword_TB0 == -1){
Hongzhi Wang's avatar
Hongzhi Wang committed
788
      nr_dlsch_16qam_llr(frame_parms,
789 790 791
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[1],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
792
                      symbol,len,first_symbol_flag,nb_rb,
793 794 795 796 797
                      pdsch_vars[eNB_id]->llr128_2ndstream,
                      beamforming_mode);
    }
    else if (rx_type >= rx_IC_single_stream) {
      if (dlsch1_harq->Qm == 2) {
Hongzhi Wang's avatar
Hongzhi Wang committed
798
        nr_dlsch_16qam_qpsk_llr(frame_parms,
799 800 801 802
                             pdsch_vars[eNB_id]->rxdataF_comp0,
                             rxdataF_comp_ptr,//i
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
803
                             pdsch_vars[eNB_id]->layer_llr[0],
804 805 806 807
                             symbol,first_symbol_flag,nb_rb,
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                             pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
808
          nr_dlsch_qpsk_16qam_llr(frame_parms,
809 810 811 812
                               rxdataF_comp_ptr,
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,//i
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
813
                               pdsch_vars[eNB_id]->layer_llr[1],
814 815 816 817 818 819
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else if (dlsch1_harq->Qm == 4) {
Hongzhi Wang's avatar
Hongzhi Wang committed
820
        nr_dlsch_16qam_16qam_llr(frame_parms,
821 822 823 824 825
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
826
                              pdsch_vars[eNB_id]->layer_llr[0],
827
                              symbol,len,first_symbol_flag,nb_rb,
828 829 830
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
831
          nr_dlsch_16qam_16qam_llr(frame_parms,
832 833 834 835 836
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
837
                                pdsch_vars[eNB_id]->layer_llr[1],
838
                                symbol,len,first_symbol_flag,nb_rb,
839 840 841 842 843
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else {
Hongzhi Wang's avatar
Hongzhi Wang committed
844
        nr_dlsch_16qam_64qam_llr(frame_parms,
845 846 847 848 849
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
850
                              pdsch_vars[eNB_id]->layer_llr[0],
851 852 853 854
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
855
          nr_dlsch_64qam_16qam_llr(frame_parms,
856 857 858 859 860
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
861
                                pdsch_vars[eNB_id]->layer_llr[1],
862 863 864 865 866 867 868 869 870
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
    }
    break;
  case 6 :
    if ((rx_type==rx_standard) || (codeword_TB1 == -1))  {
Hongzhi Wang's avatar
Hongzhi Wang committed
871
      nr_dlsch_64qam_llr(frame_parms,
872 873 874 875
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      (int16_t*)pllr_symbol_cw0,
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
876
                      symbol,len,first_symbol_flag,nb_rb,
877 878 879
                      pdsch_vars[eNB_id]->llr_offset[symbol],
                      beamforming_mode);
    } else if (codeword_TB0 == -1){
Hongzhi Wang's avatar
Hongzhi Wang committed
880
      nr_dlsch_64qam_llr(frame_parms,
881
                      pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
882
                      pllr_symbol_cw1,
883 884
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
885
                      symbol,len,first_symbol_flag,nb_rb,
886 887 888 889 890
                      pdsch_vars[eNB_id]->llr_offset[symbol],
                      beamforming_mode);
    }
    else if (rx_type >= rx_IC_single_stream) {
      if (dlsch1_harq->Qm == 2) {
Hongzhi Wang's avatar
Hongzhi Wang committed
891
        nr_dlsch_64qam_qpsk_llr(frame_parms,
892 893 894 895
                             pdsch_vars[eNB_id]->rxdataF_comp0,
                             rxdataF_comp_ptr,//i
                             pdsch_vars[eNB_id]->dl_ch_mag0,
                             pdsch_vars[eNB_id]->dl_ch_rho2_ext,
896
                             pdsch_vars[eNB_id]->layer_llr[0],
897 898 899 900
                             symbol,first_symbol_flag,nb_rb,
                             adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                             pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
901
          nr_dlsch_qpsk_64qam_llr(frame_parms,
902 903 904 905
                               rxdataF_comp_ptr,
                               pdsch_vars[eNB_id]->rxdataF_comp0,//i
                               pdsch_vars[eNB_id]->dl_ch_mag0,
                               pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
906
                               pdsch_vars[eNB_id]->layer_llr[1],
907 908 909 910 911 912
                               symbol,first_symbol_flag,nb_rb,
                               adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,2,nr_tti_rx,symbol),
                               pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else if (dlsch1_harq->Qm == 4) {
Hongzhi Wang's avatar
Hongzhi Wang committed
913
        nr_dlsch_64qam_16qam_llr(frame_parms,
914 915 916 917 918
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
919
                              pdsch_vars[eNB_id]->layer_llr[0],
920 921 922 923
                              symbol,first_symbol_flag,nb_rb,
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr128);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
924
          nr_dlsch_16qam_64qam_llr(frame_parms,
925 926 927 928 929
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
930
                                pdsch_vars[eNB_id]->layer_llr[1],
931 932 933 934 935 936
                                symbol,first_symbol_flag,nb_rb,
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,4,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr128_2ndstream);
        }
      }
      else {
Hongzhi Wang's avatar
Hongzhi Wang committed
937
        nr_dlsch_64qam_64qam_llr(frame_parms,
938 939 940 941 942
                              pdsch_vars[eNB_id]->rxdataF_comp0,
                              rxdataF_comp_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_mag0,
                              dl_ch_mag_ptr,//i
                              pdsch_vars[eNB_id]->dl_ch_rho2_ext,
943
                              (int16_t*)pllr_symbol_layer0,
944
                              symbol,len,first_symbol_flag,nb_rb,
945 946 947
                              adjust_G2(frame_parms,dlsch0_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                              pdsch_vars[eNB_id]->llr_offset[symbol]);
        if (rx_type==rx_IC_dual_stream) {
Hongzhi Wang's avatar
Hongzhi Wang committed
948
          nr_dlsch_64qam_64qam_llr(frame_parms,
949 950 951 952 953
                                rxdataF_comp_ptr,
                                pdsch_vars[eNB_id]->rxdataF_comp0,//i
                                dl_ch_mag_ptr,
                                pdsch_vars[eNB_id]->dl_ch_mag0,//i
                                pdsch_vars[eNB_id]->dl_ch_rho_ext[harq_pid][round],
954
                                pllr_symbol_layer1,
955
                                symbol,len,first_symbol_flag,nb_rb,
956 957 958 959 960 961 962 963 964 965 966 967
                                adjust_G2(frame_parms,dlsch1_harq->rb_alloc_even,6,nr_tti_rx,symbol),
                                pdsch_vars[eNB_id]->llr_offset[symbol]);
        }
      }
    }
    break;
  default:
    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
    return(-1);
    break;
  }
  if (dlsch1_harq) {
968
  switch (nr_get_Qm_dl(dlsch1_harq->mcs,dlsch1_harq->mcs_table)) {
969 970
  case 2 :
    if (rx_type==rx_standard) {
Hongzhi Wang's avatar
Hongzhi Wang committed
971
        nr_dlsch_qpsk_llr(frame_parms,
972
                       pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
973
                       pllr_symbol_cw0,
974
                       symbol,len,first_symbol_flag,nb_rb,
975 976 977 978 979
                       beamforming_mode);
    }
    break;
  case 4:
    if (rx_type==rx_standard) {
Hongzhi Wang's avatar
Hongzhi Wang committed
980
      nr_dlsch_16qam_llr(frame_parms,
981 982 983
                      pdsch_vars[eNB_id]->rxdataF_comp0,
                      pdsch_vars[eNB_id]->llr[0],
                      pdsch_vars[eNB_id]->dl_ch_mag0,
984
                      symbol,len,first_symbol_flag,nb_rb,
985 986 987 988 989 990
                      pdsch_vars[eNB_id]->llr128,
                      beamforming_mode);
    }
    break;
  case 6 :
    if (rx_type==rx_standard) {
Hongzhi Wang's avatar
Hongzhi Wang committed
991
      nr_dlsch_64qam_llr(frame_parms,
992
                      pdsch_vars[eNB_id]->rxdataF_comp0,
hongzhi wang's avatar
hongzhi wang committed
993
                      pllr_symbol_cw0,
994 995
                      pdsch_vars[eNB_id]->dl_ch_mag0,
                      pdsch_vars[eNB_id]->dl_ch_magb0,
996
                      symbol,len,first_symbol_flag,nb_rb,
997 998 999 1000 1001 1002 1003 1004 1005 1006 1007
                      pdsch_vars[eNB_id]->llr_offset[symbol],
                      beamforming_mode);
  }
    break;
  default:
    LOG_W(PHY,"rx_dlsch.c : Unknown mod_order!!!!\n");
    return(-1);
    break;
  }
  }

hongzhi wang's avatar
hongzhi wang committed
1008
  //nr_dlsch_deinterleaving(symbol,bundle_L,(int16_t*)pllr_symbol_cw0,(int16_t*)pllr_symbol_cw0_deint, nb_rb_pdsch);
hongzhi wang's avatar
hongzhi wang committed
1009
  
1010 1011
 if (rx_type==rx_IC_dual_stream) {  
	nr_dlsch_layer_demapping(pdsch_vars[eNB_id]->llr,
1012 1013 1014 1015
				 dlsch[0]->harq_processes[harq_pid]->Nl,
				 dlsch[0]->harq_processes[harq_pid]->Qm,
				 dlsch[0]->harq_processes[harq_pid]->G,
				 pdsch_vars[eNB_id]->layer_llr);
1016 1017
 }

1018 1019 1020
#if UE_TIMING_TRACE
    stop_meas(&ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot]);
#if DISABLE_LOG_X
frtabu's avatar
frtabu committed
1021
    printf("[AbsSFN %u.%d] Slot%d Symbol %d: LLR Computation %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
1022
#else
frtabu's avatar
frtabu committed
1023
    LOG_I(PHY, "[AbsSFN %u.%d] Slot%d Symbol %d: LLR Computation  %5.2f \n",frame,nr_tti_rx,slot,symbol,ue->generic_stat_bis[ue->current_thread_id[nr_tti_rx]][slot].p_time/(cpuf*1000.0));
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
#endif
#endif
// Please keep it: useful for debugging
#if 0
  if( (symbol == 13) && (nr_tti_rx==0) && (dlsch0_harq->Qm == 6) /*&& (nb_rb==25)*/)
  {
      LOG_E(PHY,"Dump Phy Chan Est \n");
      if(1)
      {
#if 1
      write_output("rxdataF0.m"    , "rxdataF0",             &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF[0][0],14*frame_parms->ofdm_symbol_size,1,1);
      //write_output("rxdataF1.m"    , "rxdataF1",             &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].rxdataF[0][0],14*frame_parms->ofdm_symbol_size,1,1);
      write_output("dl_ch_estimates00.m", "dl_ch_estimates00",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].dl_ch_estimates[eNB_id][0][0],14*frame_parms->ofdm_symbol_size,1,1);
      //write_output("dl_ch_estimates01.m", "dl_ch_estimates01",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].dl_ch_estimates[eNB_id][1][0],14*frame_parms->ofdm_symbol_size,1,1);
      //write_output("dl_ch_estimates10.m", "dl_ch_estimates10",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].dl_ch_estimates[eNB_id][2][0],14*frame_parms->ofdm_symbol_size,1,1);
      //write_output("dl_ch_estimates11.m", "dl_ch_estimates11",   &common_vars->common_vars_rx_data_per_thread[ue->current_thread_id[nr_tti_rx]].dl_ch_estimates[eNB_id][3][0],14*frame_parms->ofdm_symbol_size,1,1);


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


      AssertFatal(0," ");
      }

  }
#endif

#if T_TRACER
  T(T_UE_PHY_PDSCH_IQ, T_INT(eNB_id), T_INT(ue->Mod_id), T_INT(frame%1024),
    T_INT(nr_tti_rx), T_INT(nb_rb),
1068
    T_INT(frame_parms->N_RB_UL), T_INT(frame_parms->symbols_per_slot),
1069
    T_BUFFER(&pdsch_vars[eNB_id]->rxdataF_comp0[eNB_id][0],
1070
             2 * /* ulsch[UE_id]->harq_processes[harq_pid]->nb_rb */ frame_parms->N_RB_UL *12*frame_parms->symbols_per_slot*2));
1071 1072 1073 1074 1075
#endif
  return(0);

}

1076
void nr_dlsch_deinterleaving(uint8_t symbol,
1077
							uint8_t start_symbol,
1078 1079 1080
							uint16_t L,
							uint16_t *llr,
							uint16_t *llr_deint,
hongzhi wang's avatar
hongzhi wang committed
1081
							uint16_t nb_rb_pdsch)
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093
{

  uint32_t bundle_idx, N_bundle, R, C, r,c;
  int32_t m,k;
  uint8_t nb_re;

  R=2;
  N_bundle = nb_rb_pdsch/L;
  C=N_bundle/R;

  uint32_t *bundle_deint = malloc(N_bundle*sizeof(uint32_t));

frtabu's avatar
frtabu committed
1094
  printf("N_bundle %u L %d nb_rb_pdsch %d\n",N_bundle, L,nb_rb_pdsch);
1095

1096
  if (symbol==start_symbol)
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119
	  nb_re = 6;
  else
	  nb_re = 12;


  AssertFatal(llr!=NULL,"nr_dlsch_deinterleaving: FATAL llr is Null\n");


  for (c =0; c< C; c++){
	  for (r=0; r<R;r++){
		  bundle_idx = r*C+c;
		  bundle_deint[bundle_idx] = c*R+r;
		  //printf("c %u r %u bundle_idx %u bundle_deinter %u\n", c, r, bundle_idx, bundle_deint[bundle_idx]);
	  }
  }

  for (k=0; k<N_bundle;k++)
  {
	  for (m=0; m<nb_re*L;m++){
		  llr_deint[bundle_deint[k]*nb_re*L+m]= llr[k*nb_re*L+m];
		  //printf("k %d m %d bundle_deint %d llr_deint %d\n", k, m, bundle_deint[k], llr_deint[bundle_deint[k]*nb_re*L+m]);
	  }
  }
frtabu's avatar
frtabu committed
1120
  free(bundle_deint);
1121 1122
}

1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
//==============================================================================================
// Pre-processing for LLR computation
//==============================================================================================

void nr_dlsch_channel_compensation(int **rxdataF_ext,
                                int **dl_ch_estimates_ext,
                                int **dl_ch_mag,
                                int **dl_ch_magb,
                                int **rxdataF_comp,
                                int **rho,
                                NR_DL_FRAME_PARMS *frame_parms,
                                unsigned char symbol,
1135
								uint8_t pilots,
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145
                                uint8_t first_symbol_flag,
                                unsigned char mod_order,
                                unsigned short nb_rb,
                                unsigned char output_shift,
                                PHY_NR_MEASUREMENTS *measurements)
{

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

  unsigned short rb;
1146
  unsigned char aatx,aarx;
1147 1148
  __m128i *dl_ch128,*dl_ch128_2,*dl_ch_mag128,*dl_ch_mag128b,*rxdataF128,*rxdataF_comp128,*rho128;
  __m128i mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3,QAM_amp128,QAM_amp128b;
laurent's avatar
laurent committed
1149
  QAM_amp128b = _mm_setzero_si128();
1150

1151
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163
    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++) {

1164 1165 1166 1167 1168
      dl_ch128          = (__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];
      dl_ch_mag128      = (__m128i *)&dl_ch_mag[(aatx<<1)+aarx][symbol*nb_rb*12];
      dl_ch_mag128b     = (__m128i *)&dl_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];
1169 1170 1171 1172 1173 1174 1175


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

          mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128[0]);
1176
          mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
1177 1178

          mmtmpD1 = _mm_madd_epi16(dl_ch128[1],dl_ch128[1]);
1179
          mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376

          mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

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

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

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

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

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

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


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

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

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

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

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

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

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

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

          dl_ch128+=3;
          dl_ch_mag128+=3;
          dl_ch_mag128b+=3;
          rxdataF128+=3;
          rxdataF_comp128+=3;
        } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
          dl_ch128+=2;
          dl_ch_mag128+=2;
          dl_ch_mag128b+=2;
          rxdataF128+=2;
          rxdataF_comp128+=2;
        }

      }
    }
  }

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

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

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

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


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

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

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

      }

      if (first_symbol_flag==1) {
1377
        measurements->rx_correlation[0][aarx] = signal_energy(&rho[aarx][symbol*nb_rb*12],rb*12);
1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402
      }
    }
  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)


  unsigned short rb;
  unsigned char aatx,aarx,symbol_mod,pilots=0;

  int16x4_t *dl_ch128,*dl_ch128_2,*rxdataF128;
  int32x4_t mmtmpD0,mmtmpD1,mmtmpD0b,mmtmpD1b;
  int16x8_t *dl_ch_mag128,*dl_ch_mag128b,mmtmpD2,mmtmpD3,mmtmpD4;
  int16x8_t QAM_amp128,QAM_amp128b;
  int16x4x2_t *rxdataF_comp128,*rho128;

  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))) {
1403
    if (frame_parms->nb_antenna_ports_gNB==1) { // 10 out of 12 so don't reduce size
1404 1405 1406 1407 1408 1409 1410
      nb_rb=1+(5*nb_rb/6);
    }
    else {
      pilots=1;
    }
  }

1411
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586
    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++) {
      dl_ch128          = (int16x4_t*)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128      = (int16x8_t*)&dl_ch_mag[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch_mag128b     = (int16x8_t*)&dl_ch_magb[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF128        = (int16x4_t*)&rxdataF_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      rxdataF_comp128   = (int16x4x2_t*)&rxdataF_comp[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

      for (rb=0; rb<nb_rb; rb++) {
  if (mod_order>2) {
    // get channel amplitude if not QPSK
    mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128[0]);
    // mmtmpD0 = [ch0*ch0,ch1*ch1,ch2*ch2,ch3*ch3];
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    // mmtmpD0 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3]>>output_shift128 on 32-bits
    mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128[1]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD2 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    // mmtmpD2 = [ch0*ch0 + ch1*ch1,ch0*ch0 + ch1*ch1,ch2*ch2 + ch3*ch3,ch2*ch2 + ch3*ch3,ch4*ch4 + ch5*ch5,ch4*ch4 + ch5*ch5,ch6*ch6 + ch7*ch7,ch6*ch6 + ch7*ch7]>>output_shift128 on 16-bits
    mmtmpD0 = vmull_s16(dl_ch128[2], dl_ch128[2]);
    mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
    mmtmpD1 = vmull_s16(dl_ch128[3], dl_ch128[3]);
    mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
    mmtmpD3 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    if (pilots==0) {
      mmtmpD0 = vmull_s16(dl_ch128[4], dl_ch128[4]);
      mmtmpD0 = vqshlq_s32(vqaddq_s32(mmtmpD0,vrev64q_s32(mmtmpD0)),output_shift128);
      mmtmpD1 = vmull_s16(dl_ch128[5], dl_ch128[5]);
      mmtmpD1 = vqshlq_s32(vqaddq_s32(mmtmpD1,vrev64q_s32(mmtmpD1)),output_shift128);
      mmtmpD4 = vcombine_s16(vmovn_s32(mmtmpD0),vmovn_s32(mmtmpD1));
    }

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

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

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

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

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

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

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


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


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

  } else { // we have a smaller PDSCH in symbols with pilots so skip last group of 4 REs and increment less
    dl_ch128+=4;
    dl_ch_mag128+=2;
    dl_ch_mag128b+=2;
    rxdataF128+=4;
    rxdataF_comp128+=2;
  }
      }
    }
  }

  if (rho) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      rho128        = (int16x4x2_t*)&rho[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128      = (int16x4_t*)&dl_ch_estimates_ext[aarx][symbol*frame_parms->N_RB_DL*12];
      dl_ch128_2    = (int16x4_t*)&dl_ch_estimates_ext[2+aarx][symbol*frame_parms->N_RB_DL*12];
      for (rb=0; rb<nb_rb; rb++) {
  mmtmpD0 = vmull_s16(dl_ch128[0], dl_ch128_2[0]);
  mmtmpD1 = vmull_s16(dl_ch128[1], dl_ch128_2[1]);
  mmtmpD0 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0),vget_high_s32(mmtmpD0)),
             vpadd_s32(vget_low_s32(mmtmpD1),vget_high_s32(mmtmpD1)));
  mmtmpD0b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[0],*(int16x4_t*)conj)), dl_ch128_2[0]);
  mmtmpD1b = vmull_s16(vrev32_s16(vmul_s16(dl_ch128[1],*(int16x4_t*)conj)), dl_ch128_2[1]);
  mmtmpD1 = vcombine_s32(vpadd_s32(vget_low_s32(mmtmpD0b),vget_high_s32(mmtmpD0b)),
             vpadd_s32(vget_low_s32(mmtmpD1b),vget_high_s32(mmtmpD1b)));

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

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

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

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

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


  dl_ch128+=6;
  dl_ch128_2+=6;
  rho128+=3;
      }

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

1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789
void nr_dlsch_channel_compensation_core(int **rxdataF_ext,
                                     int **dl_ch_estimates_ext,
                                     int **dl_ch_mag,
                                     int **dl_ch_magb,
                                     int **rxdataF_comp,
                                     int **rho,
                                     unsigned char n_tx,
                                     unsigned char n_rx,
                                     unsigned char mod_order,
                                     unsigned char output_shift,
                                     int length,
                                     int start_point)

{

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

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

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

    for (aarx=0; aarx<n_rx; aarx++) {
      /* TODO: hack to be removed. There is crash for 1 antenna case, so
       * for 1 antenna case, I put back the value 2 as it was before
       * Elena's commit.
       */
      int x = n_rx > 1 ? n_rx : 2;

    dl_ch128          = (__m128i *)&dl_ch_estimates_ext[aatx*x + aarx][start_point];
    dl_ch_mag128      = (__m128i *)&dl_ch_mag[aatx*x + aarx][start_point];
    dl_ch_mag128b     = (__m128i *)&dl_ch_magb[aatx*x + aarx][start_point];
    rxdataF128        = (__m128i *)&rxdataF_ext[aarx][start_point];
    rxdataF_comp128   = (__m128i *)&rxdataF_comp[aatx*x + aarx][start_point];

      length_mod8 = length&7;
      if (length_mod8 == 0){
        length2 = length>>3;

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

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

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

            mmtmpD0 = _mm_packs_epi32(mmtmpD0,mmtmpD1);

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

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

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

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

          }

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

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

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

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

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

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


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

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

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

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

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

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

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

1790 1791

void nr_dlsch_scale_channel(int **dl_ch_estimates_ext,
1792 1793 1794 1795 1796
			    NR_DL_FRAME_PARMS *frame_parms,
			    NR_UE_DLSCH_t **dlsch_ue,
			    uint8_t symbol,
			    uint8_t pilots,
			    unsigned short nb_rb)
1797 1798 1799 1800 1801
{

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

  short rb, ch_amp;
1802
  unsigned char aatx,aarx;
1803 1804
  __m128i *dl_ch128, ch_amp128;

Hongzhi Wang's avatar
Hongzhi Wang committed
1805
  
1806
  if (pilots==1){
Hongzhi Wang's avatar
Hongzhi Wang committed
1807
	  nb_rb = nb_rb>>1;
1808 1809 1810 1811
  }

  // Determine scaling amplitude based the symbol

1812
  ch_amp = 1024*8; //((pilots) ? (dlsch_ue[0]->sqrt_rho_b) : (dlsch_ue[0]->sqrt_rho_a));
1813

1814
    LOG_D(PHY,"Scaling PDSCH Chest in OFDM symbol %d by %d, pilots %d nb_rb %d NCP %d symbol %d\n",symbol,ch_amp,pilots,nb_rb,frame_parms->Ncp,symbol);
1815 1816 1817 1818
   // printf("Scaling PDSCH Chest in OFDM symbol %d by %d\n",symbol_mod,ch_amp);

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

1819
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++) {
1820 1821
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {

Hongzhi Wang's avatar
Hongzhi Wang committed
1822
      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];
1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851

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

        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;

        }
      }
    }
  }

#elif defined(__arm__)

#endif
}


//compute average channel_level on each (TX,RX) antenna pair
void nr_dlsch_channel_level(int **dl_ch_estimates_ext,
1852 1853 1854 1855 1856
			    NR_DL_FRAME_PARMS *frame_parms,
			    int32_t *avg,
			    uint8_t symbol,
			    uint32_t len,
			    unsigned short nb_rb)
1857 1858 1859 1860 1861
{

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

  short rb;
Hongzhi Wang's avatar
Hongzhi Wang committed
1862
  unsigned char aatx,aarx;
1863 1864 1865
  __m128i *dl_ch128, avg128D;

  //nb_rb*nre = y * 2^x
1866
  int16_t x = factor2(len);
1867
  //x = (x>4) ? 4 : x;
1868
  int16_t y = (len)>>x;
1869
  //printf("len = %d = %d * 2^(%d)\n",len,y,x);
1870

1871
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++)
1872 1873 1874 1875 1876 1877 1878 1879 1880 1881
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = _mm_setzero_si128();
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(__m128i *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*nb_rb*12];

      for (rb=0;rb<nb_rb;rb++) {
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[0],dl_ch128[0]),x));
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[1],dl_ch128[1]),x));
1882 1883
	avg128D = _mm_add_epi32(avg128D,_mm_srai_epi16(_mm_madd_epi16(dl_ch128[2],dl_ch128[2]),x));
	dl_ch128+=3;
1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904
      }

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

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

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

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

1905
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++)
1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      //clear average level
      avg128D = vdupq_n_s32(0);
      // 5 is always a symbol with no pilots for both normal and extended prefix

      dl_ch128=(int16x4_t *)&dl_ch_estimates_ext[(aatx<<1)+aarx][symbol*frame_parms->N_RB_DL*12];

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

1921
        if (((symbol_mod == 0) || (symbol_mod == (frame_parms->Ncp-1)))&&(frame_parms->nb_antenna_ports_gNB!=1)) {
1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954
          dl_ch128+=4;
        } else {
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[4],dl_ch128[4]));
          avg128D = vqaddq_s32(avg128D,vmull_s16(dl_ch128[5],dl_ch128[5]));
          dl_ch128+=6;
        }

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

      if (symbol==2) //assume start symbol 2
          nre=6;
      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]);
    }


#endif
}

1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014
void nr_dlsch_channel_level_median(int **dl_ch_estimates_ext,
                                int32_t *median,
                                int n_tx,
                                int n_rx,
                                int length,
                                int start_point)
{

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

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

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

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

      length2 = length>>2;

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

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

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

        dl_ch128+=1;
      }

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

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

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

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

2015
  for (aatx=0; aatx<frame_parms->nb_antenna_ports_gNB; aatx++){
2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      max = 0;
      min = 0;
      norm128D = vdupq_n_s32(0);

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

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

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

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

          dl_ch128+=1;
      }

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

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

}

laurent's avatar
laurent committed
2050
static void nr_dlsch_dual_stream_correlation_core(int **dl_ch_estimates_ext,
2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157
                                        int **dl_ch_estimates_ext_i,
                                        int **dl_ch_rho_ext,
                                        unsigned char n_tx,
                                        unsigned char n_rx,
                                        unsigned char output_shift,
                                        int length,
                                        int start_point)
{
#if defined(__x86_64__)||defined(__i386__)

  __m128i *dl_ch128,*dl_ch128i,*dl_ch_rho128,mmtmpD0,mmtmpD1,mmtmpD2,mmtmpD3;
  unsigned char aarx;
  int ii, length2, length_mod8;


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

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

    if (dl_ch_estimates_ext_i == NULL)
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext[aarx + n_rx][start_point];
    else
      dl_ch128i         = (__m128i *)&dl_ch_estimates_ext_i[aarx][start_point];

    dl_ch_rho128      = (__m128i *)&dl_ch_rho_ext[aarx][start_point];

    length_mod8 = length&7;

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

      for (ii=0; ii<length2; ++ii) {
      // multiply by conjugated channel
        mmtmpD0 = _mm_madd_epi16(dl_ch128[0],dl_ch128i[0]);
        //      print_ints("re",&mmtmpD0);
        // mmtmpD0 contains real part of 4 consecutive outputs (32-bit)
        mmtmpD1 = _mm_shufflelo_epi16(dl_ch128[0],_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_shufflehi_epi16(mmtmpD1,_MM_SHUFFLE(2,3,0,1));
        mmtmpD1 = _mm_sign_epi16(mmtmpD1,*(__m128i*)&conjugate[0]);
        mmtmpD1 = _mm_madd_epi16(mmtmpD1,dl_ch128i[0]);
        //      print_ints("im",&mmtmpD1);
        // mmtmpD1 contains imag part of 4 consecutive outputs (32-bit)
        mmtmpD0 = _mm_srai_epi32(mmtmpD0,output_shift);
        //      print_ints("re(shift)",&mmtmpD0);
        mmtmpD1 = _mm_srai_epi32(mmtmpD1,output_shift);
        //      print_ints("im(shift)",&mmtmpD1);
        mmtmpD2 = _mm_unpacklo_epi32(mmtmpD0,mmtmpD1);
        mmtmpD3 = _mm_unpackhi_epi32(mmtmpD0,mmtmpD1);
        //      print_ints("c0",&mmtmpD2);
        //      print_ints("c1",&mmtmpD3);
        dl_ch_rho128[0] = _mm_packs_epi32(mmtmpD2,mmtmpD3);
      // print_shorts("rho 0:",dl_ch_rho128);
        // 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);

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

    }else {
        printf ("Channel Correlarion: Received number of subcarriers is not multiple of 8, \n"
                 "need to adapt the code!\n");
      }

  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

#endif
}

void nr_dlsch_detection_mrc_core(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 n_tx,
                              unsigned char n_rx,
                              int length,
                              int start_point)
{

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

  unsigned char aatx;
  int i;
  __m128i *rxdataF_comp128_0, *rxdataF_comp128_1, *rxdataF_comp128_2, *rxdataF_comp128_3;
  __m128i *dl_ch_mag128_0, *dl_ch_mag128_1, *dl_ch_mag128_2, *dl_ch_mag128_3;
  __m128i *dl_ch_mag128_0b, *dl_ch_mag128_1b,  *dl_ch_mag128_2b,  *dl_ch_mag128_3b;
laurent's avatar
laurent committed
2158
  __m128i *rho128_0, *rho128_1, *rho128_2=NULL, *rho128_3=NULL;
2159
  __m128i *rho128_i0, *rho128_i1, *rho128_i2=NULL, *rho128_i3=NULL;
2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337
  int length_mod4 = 0;
  int length2;

  if (n_rx>1) {

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

      rxdataF_comp128_0   = (__m128i *)&rxdataF_comp[(aatx<<1)][start_point];
      rxdataF_comp128_1   = (__m128i *)&rxdataF_comp[(aatx<<1)+1][start_point];
      dl_ch_mag128_0      = (__m128i *)&dl_ch_mag[(aatx<<1)][start_point];
      dl_ch_mag128_1      = (__m128i *)&dl_ch_mag[(aatx<<1)+1][start_point];
      dl_ch_mag128_0b     = (__m128i *)&dl_ch_magb[(aatx<<1)][start_point];
      dl_ch_mag128_1b     = (__m128i *)&dl_ch_magb[(aatx<<1)+1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++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));
        }
      }
    }


    if (rho) {
      rho128_0 = (__m128i *) &rho[0][start_point];
      rho128_1 = (__m128i *) &rho[1][start_point];

      if (n_tx == 4){
        rho128_2 = (__m128i *) &rho[2][start_point];
        rho128_3 = (__m128i *) &rho[3][start_point];
      }
        if (length_mod4 == 0){
          length2 = length>>2;

          for (i=0; i<length2; ++i) {
            rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));
          if (n_tx == 4){
            rho128_2[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_2[i],1),_mm_srai_epi16(rho128_3[i],1));
          }
        }
      }
    }

    if (rho_i){
      rho128_i0 = (__m128i *) &rho_i[0][start_point];
      rho128_i1 = (__m128i *) &rho_i[1][start_point];
      if (n_tx == 4){
        rho128_i2 = (__m128i *) &rho_i[2][start_point];
        rho128_i3 = (__m128i *) &rho_i[3][start_point];
      }
      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i){
          rho128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
          if (n_tx == 4){
            rho128_i2[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i2[i],1),_mm_srai_epi16(rho128_i3[i],1));
          }
        }
      }
    }

      if (n_tx == 4){

      rxdataF_comp128_0 = (__m128i *)&rxdataF_comp[0][start_point];
      rxdataF_comp128_1 = (__m128i *)&rxdataF_comp[2][start_point];
      rxdataF_comp128_2 = (__m128i *)&rxdataF_comp[4][start_point];
      rxdataF_comp128_3 = (__m128i *)&rxdataF_comp[6][start_point];

      dl_ch_mag128_0 = (__m128i *)&dl_ch_mag[0][start_point];
      dl_ch_mag128_1 = (__m128i *)&dl_ch_mag[2][start_point];
      dl_ch_mag128_2 = (__m128i *)&dl_ch_mag[4][start_point];
      dl_ch_mag128_3 = (__m128i *)&dl_ch_mag[6][start_point];

      dl_ch_mag128_0b = (__m128i *)&dl_ch_magb[0][start_point];
      dl_ch_mag128_1b = (__m128i *)&dl_ch_magb[2][start_point];
      dl_ch_mag128_2b = (__m128i *)&dl_ch_magb[4][start_point];
      dl_ch_mag128_3b = (__m128i *)&dl_ch_magb[6][start_point];

      rho128_0 = (__m128i *)&rho[0][start_point];
      rho128_1 = (__m128i *)&rho[2][start_point];

      rho128_i0 = (__m128i *)&rho_i[0][start_point];
      rho128_i1 = (__m128i *)&rho_i[2][start_point];


      if (length_mod4 == 0){

        length2 = length>>2;

        for (i=0; i<length2; ++i) {
          rxdataF_comp128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_0[i],1),_mm_srai_epi16(rxdataF_comp128_1[i],1));
          rxdataF_comp128_2[i] = _mm_adds_epi16(_mm_srai_epi16(rxdataF_comp128_2[i],1),_mm_srai_epi16(rxdataF_comp128_3[i],1));

          dl_ch_mag128_0[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0[i],1),_mm_srai_epi16(dl_ch_mag128_1[i],1));
          dl_ch_mag128_2[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_2[i],1),_mm_srai_epi16(dl_ch_mag128_3[i],1));

          dl_ch_mag128_0b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_0b[i],1),_mm_srai_epi16(dl_ch_mag128_1b[i],1));
          dl_ch_mag128_2b[i] = _mm_adds_epi16(_mm_srai_epi16(dl_ch_mag128_2b[i],1),_mm_srai_epi16(dl_ch_mag128_3b[i],1));

          rho128_0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_0[i],1),_mm_srai_epi16(rho128_1[i],1));

          rho128_i0[i] = _mm_adds_epi16(_mm_srai_epi16(rho128_i0[i],1),_mm_srai_epi16(rho128_i1[i],1));
        }
    }
  }

  }

  _mm_empty();
  _m_empty();

#elif defined(__arm__)

  unsigned char aatx;
  int i;
  int16x8_t *rxdataF_comp128_0,*rxdataF_comp128_1,*dl_ch_mag128_0,*dl_ch_mag128_1,*dl_ch_mag128_0b,*dl_ch_mag128_1b,*rho128_0,*rho128_1,*rho128_i0,*rho128_i1;
  int length_mod4 = 0;
  int length2;
  int ii=0;

  if (n_rx>1) {

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

      rxdataF_comp128_0   = (int16x8_t *)&rxdataF_comp[(aatx<<1)][start_point];
      rxdataF_comp128_1   = (int16x8_t *)&rxdataF_comp[(aatx<<1)+1][start_point];
      dl_ch_mag128_0      = (int16x8_t *)&dl_ch_mag[(aatx<<1)][start_point];
      dl_ch_mag128_1      = (int16x8_t *)&dl_ch_mag[(aatx<<1)+1][start_point];
      dl_ch_mag128_0b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)][start_point];
      dl_ch_mag128_1b     = (int16x8_t *)&dl_ch_magb[(aatx<<1)+1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++ii) {
          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][start_point];
      rho128_1 = (int16x8_t *) &rho[1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i) {
          rho128_0[i] = vhaddq_s16(rho128_0[i],rho128_1[i]);
        }
      }
    }

    if (rho_i){

      rho128_i0 = (__m128i *) &rho_i[0][start_point];
      rho128_i1 = (__m128i *) &rho_i[1][start_point];

      if (length_mod4 == 0){
        length2 = length>>2;

        for (i=0; i<length2; ++i)
          rho128_i0[i] = vhaddq_s16(rho128_i0[i],rho128_i1[i]);

      }
    }
  }

  }

#endif
}

2338 2339 2340 2341 2342
//==============================================================================================
// Extraction functions
//==============================================================================================

unsigned short nr_dlsch_extract_rbs_single(int **rxdataF,
2343 2344 2345 2346 2347 2348
					   int **dl_ch_estimates,
					   int **rxdataF_ext,
					   int **dl_ch_estimates_ext,
					   unsigned short pmi,
					   unsigned char *pmi_ext,
					   unsigned char symbol,
2349
					   uint8_t pilots,
2350 2351 2352 2353 2354
					   unsigned short start_rb,
					   unsigned short nb_rb_pdsch,
					   unsigned char nr_tti_rx,
					   uint32_t high_speed_flag,
					   NR_DL_FRAME_PARMS *frame_parms) {
2355 2356 2357



hongzhi wang's avatar
hongzhi wang committed
2358
  unsigned short k,rb;
yilmazt's avatar
yilmazt committed
2359
  unsigned char i,aarx; //,nsymb,sss_symb,pss_symb=0,l;
2360 2361 2362 2363
  int *dl_ch0,*dl_ch0_ext,*rxF,*rxF_ext;



2364
  unsigned char j=0;
2365

2366 2367
  AssertFatal(frame_parms->nushift ==0 || frame_parms->nushift == 1,
	      "nushift %d is illegal\n",frame_parms->nushift);
2368 2369 2370

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

2371 2372
    k = frame_parms->first_carrier_offset + 12*start_rb; 

2373
    if (high_speed_flag == 1)
hongzhi wang's avatar
hongzhi wang committed
2374
      dl_ch0     = &dl_ch_estimates[aarx][(2*(frame_parms->ofdm_symbol_size))];
2375 2376 2377
    else
      dl_ch0     = &dl_ch_estimates[aarx][0];

hongzhi wang's avatar
hongzhi wang committed
2378
    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(nb_rb_pdsch*12)];
2379

hongzhi wang's avatar
hongzhi wang committed
2380 2381 2382
    rxF_ext   = &rxdataF_ext[aarx][symbol*(nb_rb_pdsch*12)];
    rxF       = &rxdataF[aarx][(k+(symbol*(frame_parms->ofdm_symbol_size)))];
    
2383
    for (rb = 0; rb < nb_rb_pdsch; rb++) {
2384 2385 2386 2387
      if (k>frame_parms->ofdm_symbol_size) {
        k = k-frame_parms->ofdm_symbol_size;
        rxF = &rxdataF[aarx][(k+(symbol*(frame_parms->ofdm_symbol_size)))];
        }
2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406
      if (pilots==0) {
	memcpy((void*)rxF_ext,(void*)rxF,12*sizeof(*rxF_ext));
	memcpy((void*)dl_ch0_ext,(void*)dl_ch0,12*sizeof(*dl_ch0_ext));
	dl_ch0_ext+=12;
	rxF_ext+=12;
      } else {
	j=0;
		
	for (i = (1-frame_parms->nushift);
	     i<12; 
	     i+=2) {
	  rxF_ext[j]=rxF[i];
	  dl_ch0_ext[j]=dl_ch0[i];
	  j++;
	}
	
	
	dl_ch0_ext+=6;
	rxF_ext+=6;
2407
      }
2408 2409 2410 2411 2412 2413 2414 2415 2416
      
      dl_ch0+=12;
      rxF+=12;
      k+=12;
      if (k>=frame_parms->ofdm_symbol_size) {
        k=k-(frame_parms->ofdm_symbol_size);
	rxF       = &rxdataF[aarx][k+(symbol*(frame_parms->ofdm_symbol_size))];
      }
    }
2417
  }
2418 2419
  
  
hongzhi wang's avatar
hongzhi wang committed
2420
  return(nb_rb_pdsch/frame_parms->nb_antennas_rx);
2421 2422
}

2423 2424 2425 2426 2427 2428 2429
unsigned short nr_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 char symbol,
2430
									  uint8_t pilots,
2431 2432 2433 2434 2435 2436 2437 2438 2439
									  unsigned short start_rb,
									  unsigned short nb_rb_pdsch,
                                      unsigned char nr_tti_rx,
                                      uint32_t high_speed_flag,
                                      NR_DL_FRAME_PARMS *frame_parms,
                                      MIMO_mode_t mimo_mode) {

  int prb,nb_rb=0;
  unsigned short k;
Florian Kaltenberger's avatar
Florian Kaltenberger committed
2440
  int i,j,aarx;
frtabu's avatar
frtabu committed
2441
  int32_t *dl_ch0=NULL,*dl_ch0_ext=NULL,*dl_ch1=NULL,*dl_ch1_ext=NULL,*rxF=NULL,*rxF_ext=NULL;
2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454

  k = frame_parms->first_carrier_offset + 516; //0

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

    if (high_speed_flag==1) {
      dl_ch0     = &dl_ch_estimates[aarx][symbol*(frame_parms->ofdm_symbol_size)];
      dl_ch1     = &dl_ch_estimates[2+aarx][symbol*(frame_parms->ofdm_symbol_size)];
    } else {
      dl_ch0     = &dl_ch_estimates[aarx][0];
      dl_ch1     = &dl_ch_estimates[2+aarx][0];
    }

2455
    //pmi_loc = pmi_ext;
2456 2457 2458 2459 2460 2461 2462

    // pointers to extracted RX signals and channel estimates
    rxF_ext    = &rxdataF_ext[aarx][symbol*(nb_rb_pdsch*12)];
    dl_ch0_ext = &dl_ch_estimates_ext[aarx][symbol*(nb_rb_pdsch*12)];
    dl_ch1_ext = &dl_ch_estimates_ext[2+aarx][symbol*(nb_rb_pdsch*12)];

    for (prb=0; prb<frame_parms->N_RB_DL; prb++) {
2463
      //skip_half=0;
2464 2465 2466 2467 2468

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

        // For second half of RBs skip DC carrier
        if (k>=frame_parms->ofdm_symbol_size) {
2469
          rxF = &rxdataF[aarx][(symbol*(frame_parms->ofdm_symbol_size))];
2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496
          k=k-(frame_parms->ofdm_symbol_size);
        }

         /*
         if (mimo_mode <= PUSCH_PRECODING1)
          *pmi_loc = (pmi>>((prb>>2)<<1))&3;
         else
          *pmi_loc=(pmi>>prb)&1;*/

        // *pmi_loc = get_pmi(frame_parms->N_RB_DL,mimo_mode,pmi,prb);
        //  pmi_loc++;


          if (pilots == 0) {

            memcpy(dl_ch0_ext,dl_ch0,12*sizeof(int));
            memcpy(dl_ch1_ext,dl_ch1,12*sizeof(int));
            memcpy(rxF_ext,rxF,12*sizeof(int));
            dl_ch0_ext +=12;
            dl_ch1_ext +=12;
            rxF_ext    +=12;
          } else { // pilots==1
            j=0;
            for (i=0; i<12; i++) {
              if ((i&1)!=frame_parms->nushift) {
                rxF_ext[j]=rxF[i];
                //        printf("extract rb %d, re %d => (%d,%d)\n",rb,i,*(short *)&rxF_ext[j],*(1+(short*)&rxF_ext[j]));
frtabu's avatar
frtabu committed
2497 2498
                dl_ch0_ext[j]=dl_ch0[i];
                dl_ch1_ext[j++]=dl_ch1[i];
2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515
              }
            }
            dl_ch0_ext+=6;
            dl_ch1_ext+=6;
            rxF_ext+=6;
          } // pilots==1

          dl_ch0+=12;
          dl_ch1+=12;
          rxF+=12;
          k+=12;
      }
    } // for prb
  } // for aarx
  return(nb_rb/frame_parms->nb_antennas_rx);
}

2516

laurent's avatar
laurent committed
2517
static void nr_dlsch_layer_demapping(int16_t **llr_cw,
2518 2519 2520 2521
				     uint8_t Nl,
				     uint8_t mod_order,
				     uint16_t length,
				     int16_t **llr_layers) {
2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544

  switch (Nl) {

    case 1:
      memcpy((void*)llr_layers[0], (void*)llr_cw[0], (length)*sizeof(int16_t));
    break;

    case 2:
    case 3:
    case 4:
      for (int i=0; i<(length/Nl/mod_order); i++){
        for (int l=0; l<Nl; l++) {
        	for (int m=0; m<mod_order; m++){
        		llr_cw[0][Nl*i+l*mod_order+m] = llr_layers[l][i*mod_order+m];
        	}
        }
  	  }
    break;

  default:
  AssertFatal(0, "Not supported number of layers %d\n", Nl);
  }
}
2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586
//==============================================================================================

#ifdef USER_MODE


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

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

  if (ue->frame_parms.nb_antennas_rx >1) {
    sprintf(fname,"dlsch%d_rxF_r%d_ext1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_ext1",eNB_id,round);
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_ext[1],12*N_RB_DL*nsymb,1,1);
  }

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

  if (ue->transmission_mode[eNB_id]==7){
    sprintf(fname,"dlsch%d_bf_ch_r%d.m",eNB_id,round);
    sprintf(vname,"dl%d_bf_ch_r%d",eNB_id,round);
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_bf_ch_estimates[0],512*nsymb,1,1);
    //write_output(fname,vname,phy_vars_ue->lte_ue_pdsch_vars[eNB_id]->dl_bf_ch_estimates[0],512,1,1);

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

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

2587
  if (ue->frame_parms.nb_antenna_ports_gNB == 2) {
2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620
    sprintf(fname,"dlsch%d_ch_r%d_ext10.m",eNB_id,round);
    sprintf(vname,"dl%d_ch_r%d_ext10",eNB_id,round);
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);

    if (ue->frame_parms.nb_antennas_rx == 2) {
      sprintf(fname,"dlsch%d_ch_r%d_ext11.m",eNB_id,round);
      sprintf(vname,"dl%d_ch_r%d_ext11",eNB_id,round);
      write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
    }
  }

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

  /*
    write_output("dlsch%d_ch_ext01.m","dl01_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[1],12*N_RB_DL*nsymb,1,1);
    write_output("dlsch%d_ch_ext10.m","dl10_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[2],12*N_RB_DL*nsymb,1,1);
    write_output("dlsch%d_ch_ext11.m","dl11_ch0_ext",pdsch_vars[eNB_id]->dl_ch_estimates_ext[3],12*N_RB_DL*nsymb,1,1);
  */
  sprintf(fname,"dlsch%d_r%d_rho.m",eNB_id,round);
  sprintf(vname,"dl_rho_r%d_%d",eNB_id,round);

  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_rho_ext[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);

  sprintf(fname,"dlsch%d_r%d_rho2.m",eNB_id,round);
  sprintf(vname,"dl_rho2_r%d_%d",eNB_id,round);

  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_rho2_ext[0],12*N_RB_DL*nsymb,1,1);

  sprintf(fname,"dlsch%d_rxF_r%d_comp0.m",eNB_id,round);
  sprintf(vname,"dl%d_rxF_r%d_comp0",eNB_id,round);
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_comp0[0],12*N_RB_DL*nsymb,1,1);
2621
  if (ue->frame_parms.nb_antenna_ports_gNB == 2) {
2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681
    sprintf(fname,"dlsch%d_rxF_r%d_comp1.m",eNB_id,round);
    sprintf(vname,"dl%d_rxF_r%d_comp1",eNB_id,round);
    write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->rxdataF_comp1[harq_pid][round][0],12*N_RB_DL*nsymb,1,1);
  }

  sprintf(fname,"dlsch%d_rxF_r%d_llr.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_llr",eNB_id,round);
  write_output(fname,vname, ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->llr[0],coded_bits_per_codeword[0],1,0);
  sprintf(fname,"dlsch%d_r%d_mag1.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag1",eNB_id,round);
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_mag0[0],12*N_RB_DL*nsymb,1,1);
  sprintf(fname,"dlsch%d_r%d_mag2.m",eNB_id,round);
  sprintf(vname,"dl%d_r%d_mag2",eNB_id,round);
  write_output(fname,vname,ue->pdsch_vars[ue->current_thread_id[nr_tti_rx]][eNB_id]->dl_ch_magb0[0],12*N_RB_DL*nsymb,1,1);

  //  printf("log2_maxh = %d\n",ue->pdsch_vars[eNB_id]->log2_maxh);
}
#endif

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

  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]
         );

}

void print_shorts(char *s,__m128i *x)
{

  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]);

}

void print_shorts2(char *s,__m64 *x)
{

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

}

void print_ints(char *s,__m128i *x)
{

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

}*/
#endif