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Commit b880e449 authored by Raymond Knopp's avatar Raymond Knopp
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Merge branch 'nr_prs' of https://gitlab.eurecom.fr/oai/openairinterface5g into nr_prs

parents 27c16382 2f46d68a
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Showing with 39 additions and 26 deletions
openair1/PHY/INIT/nr_init_ue.c
View file @ b880e449
......@@ -335,8 +335,8 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
AssertFatal(((prs_vars[idx]->prs_ch_estimates!=NULL) || (prs_vars[idx]->prs_ch_estimates_time!=NULL)), "NR UE init: PRS channel estimates malloc failed\n");
for (i=0; i<fp->nb_antennas_rx; i++) {
prs_vars[idx]->prs_ch_estimates[i] = (int32_t *)malloc16_clear(2*fp->ofdm_symbol_size*NR_MAX_NUM_PRS_SYMB);
prs_vars[idx]->prs_ch_estimates_time[i] = (int32_t *)malloc16_clear(2*fp->ofdm_symbol_size*NR_MAX_NUM_PRS_SYMB);
prs_vars[idx]->prs_ch_estimates[i] = (int32_t *)malloc16_clear(fp->ofdm_symbol_size*NR_MAX_NUM_PRS_SYMB*sizeof(int32_t));
prs_vars[idx]->prs_ch_estimates_time[i] = (int32_t *)malloc16_clear(fp->ofdm_symbol_size*NR_MAX_NUM_PRS_SYMB*sizeof(int32_t));
AssertFatal(((prs_vars[idx]->prs_ch_estimates[i]!=NULL) || (prs_vars[idx]->prs_ch_estimates_time[i]!=NULL)), "NR UE init: PRS channel estimates malloc failed %d\n", i);
}
}
......
openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
View file @ b880e449
......@@ -36,7 +36,7 @@
//#define DEBUG_PDCCH
//#define DEBUG_CH
//#define DEBUG_PRS_CHEST
//#define DEBUG_PRS_PRINTS
#define DEBUG_PRS_PRINTS
extern short nr_qpsk_mod_table[8];
int nr_prs_channel_estimation(uint8_t gNB_id,
......@@ -60,13 +60,16 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
uint8_t rxAnt = 0, idx = prs_cfg->NPRSID;
int16_t ch[2] = {0}, *rxF, *pil, *fl,*fm, *fmm, *fml, *fmr, *fr, mod_prs[NR_MAX_PRS_LENGTH<<1];
int16_t k_prime = 0, k = 0, re_offset = 0, second_half = 0;
int16_t *ch_freq = (int16_t *)malloc16(frame_params->ofdm_symbol_size*sizeof(int32_t));
int32_t *ch_time = (int32_t *)malloc16(frame_params->ofdm_symbol_size*sizeof(int32_t));
int16_t *ch_freq = (int16_t *)malloc16_clear(frame_params->ofdm_symbol_size*sizeof(int32_t));
int32_t *ch_time = (int32_t *)malloc16_clear(frame_params->ofdm_symbol_size*sizeof(int32_t));
AssertFatal(((ch_freq != NULL) || (ch_time != NULL)), "nr_prs_channel_estimation: channel estimate buffer initialization failed!!");
int16_t *ch_init = ch_freq;
int32_t tdoa[NR_MAX_NUM_PRS_SYMB] = {0};
int32_t ch_pwr[NR_MAX_NUM_PRS_SYMB] = {0};
#ifdef DEBUG_PRS_CHEST
char filename[128] = {0}, varname[128] = {0};
#endif
for(int l = prs_cfg->SymbolStart; l < prs_cfg->SymbolStart+prs_cfg->NumPRSSymbols; l++)
{
......@@ -84,11 +87,8 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
k_prime = k_prime_table[3][symInd];
}
//re_offset
k = re_offset = (prs_cfg->REOffset+k_prime) % prs_cfg->CombSize + prs_cfg->RBOffset*12 + frame_params->first_carrier_offset;
#ifdef DEBUG_PRS_PRINTS
printf("[gNB %d] PRS config l %d k_prime %d, k %d :\nprs_cfg->SymbolStart %d\nprs_cfg->NumPRSSymbols %d\nprs_cfg->NumRB %d\nprs_cfg->CombSize %d\n", gNB_id, l, k_prime, k, prs_cfg->SymbolStart, prs_cfg->NumPRSSymbols, prs_cfg->NumRB, prs_cfg->CombSize);
printf("[gNB %d] PRS config l %d k_prime %d:\nprs_cfg->SymbolStart %d\nprs_cfg->NumPRSSymbols %d\nprs_cfg->NumRB %d\nprs_cfg->CombSize %d\n", gNB_id, l, k_prime, prs_cfg->SymbolStart, prs_cfg->NumPRSSymbols, prs_cfg->NumRB, prs_cfg->CombSize);
#endif
// Pilots generation and modulation
for (int m = 0; m < (12/prs_cfg->CombSize)*prs_cfg->NumRB; m++)
......@@ -100,6 +100,9 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
for (rxAnt=0; rxAnt < frame_params->nb_antennas_rx; rxAnt++)
{
// calculate RE offset
k = re_offset = (prs_cfg->REOffset+k_prime) % prs_cfg->CombSize + prs_cfg->RBOffset*12 + frame_params->first_carrier_offset;
// Channel estimation and interpolation
pil = (int16_t *)&mod_prs[0];
rxF = (int16_t *)&rxdataF[rxAnt][l*frame_params->ofdm_symbol_size + k];
......@@ -128,7 +131,7 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
break;
default:
LOG_I(PHY, "nr=prs channel_estimation: k_prime=%d -> ERROR\n",k_prime);
LOG_I(PHY, "%s: ERROR!! Invalid k_prime=%d for PRS comb_size %d, symbol %d\n",__FUNCTION__, k_prime, prs_cfg->CombSize, l);
return(-1);
break;
}
......@@ -252,7 +255,7 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
break;
default:
LOG_I(PHY, "nr=prs channel_estimation: k_prime=%d -> ERROR\n",k_prime);
LOG_I(PHY, "%s: ERROR!! Invalid k_prime=%d for PRS comb_size %d, symbol %d\n",__FUNCTION__, k_prime, prs_cfg->CombSize, l);
return(-1);
break;
}
......@@ -331,8 +334,7 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
}
else
{
LOG_I(PHY, "NR_PRS UE Channel EStimation: CombSize other than 2 and 4 are NOT supported currently! Returning");
return(0);
AssertFatal((prs_cfg->CombSize == 2)||(prs_cfg->CombSize == 4), "[NR_PRS Channel EStimation] CombSize other than 2 and 4 are NOT supported currently. Exiting!!!");
}
//reset channel pointer
......@@ -341,7 +343,7 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
for (int rb = 0; rb < prs_cfg->NumRB; rb++)
{
printf("================================================================\n");
printf("\t\t Resource Block %d\n", rb);
printf("\t\t[gNB %d][Rx %d][PRS symb %d, RB %d]\n", gNB_id, rxAnt, l, rb);
printf("================================================================\n");
idx = (12*rb)<<1;
printf("%4d %4d %4d %4d %4d %4d %4d %4d %4d %4d %4d %4d\n", ch_freq[idx], ch_freq[idx+1], ch_freq[idx+2], ch_freq[idx+3], ch_freq[idx+4], ch_freq[idx+5], ch_freq[idx+6], ch_freq[idx+7], ch_freq[idx+8], ch_freq[idx+9], ch_freq[idx+10], ch_freq[idx+11]);
......@@ -396,7 +398,7 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
break;
default:
LOG_I(PHY, "unsupported ofdm symbol size \n");
LOG_I(PHY, "%s: unsupported ofdm symbol size \n", __FUNCTION__);
assert(0);
}
......@@ -417,21 +419,32 @@ int nr_prs_channel_estimation(uint8_t gNB_id,
} // for rxAnt
} //for l
for (rxAnt=0; rxAnt < frame_params->nb_antennas_rx; rxAnt++)
{
#ifdef DEBUG_PRS_CHEST
LOG_M("PRSpilot.m", "prs_loc", &mod_prs[0], prs_cfg->NumRB*(12/prs_cfg->CombSize),1,1);
LOG_M("rxSigF.m","rxF",&rxdataF[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size,1,1);
LOG_M("prsEstF.m","prs_chestF",&prs_chestF[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size,1,1);
LOG_M("prsEstT.m","prs_chestT",&prs_chestT[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size,1,1);
sprintf(filename, "%s%i%s", "PRSpilot_", rxAnt, ".m");
LOG_M(filename, "prs_loc", &mod_prs[0], prs_cfg->NumRB*(12/prs_cfg->CombSize),1,1);
sprintf(filename, "%s%i%s", "rxSigF_", rxAnt, ".m");
sprintf(varname, "%s%i", "rxF_", rxAnt);
LOG_M(filename, varname, &rxdataF[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size,1,1);
sprintf(filename, "%s%i%s", "prsChestF_", rxAnt, ".m");
sprintf(varname, "%s%i", "prsChF_", rxAnt);
LOG_M(filename, varname, &prs_chestF[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size,1,1);
sprintf(filename, "%s%i%s", "prsChestT_", rxAnt, ".m");
sprintf(varname, "%s%i", "prsChT_", rxAnt);
LOG_M(filename, varname, &prs_chestT[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size,1,1);
#endif
// T tracer dump
T(T_UE_PHY_DL_CHANNEL_ESTIMATE_FREQ, T_INT(0),
T_INT(proc->frame_rx), T_INT(proc->nr_slot_rx),
T_INT(0), T_BUFFER(&prs_chestF[0][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size*sizeof(int32_t)));
// T tracer dump
T(T_UE_PHY_DL_CHANNEL_ESTIMATE_FREQ, T_INT(0),
T_INT(proc->frame_rx), T_INT(proc->nr_slot_rx),
T_INT(rxAnt), T_BUFFER(&prs_chestF[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size*sizeof(int32_t)));
T(T_UE_PHY_DL_CHANNEL_ESTIMATE, T_INT(0),
T_INT(proc->frame_rx), T_INT(proc->nr_slot_rx),
T_INT(rxAnt), T_BUFFER(&prs_chestT[rxAnt][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size*sizeof(int32_t)));
T(T_UE_PHY_DL_CHANNEL_ESTIMATE, T_INT(0),
T_INT(proc->frame_rx), T_INT(proc->nr_slot_rx),
T_INT(0), T_BUFFER(&prs_chestT[0][prs_cfg->SymbolStart*frame_params->ofdm_symbol_size], prs_cfg->NumPRSSymbols*frame_params->ofdm_symbol_size*sizeof(int32_t)));
}
free(ch_freq);
free(ch_time);
......
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