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Support added for 2 RX Antenna case in ulsim and fixed indexing issue in gNB RX chain

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This commit is contained in:
Rohan Patil
2021-03-03 17:10:02 +05:30
parent fdc818bc06
commit 429a5d4187
2 changed files with 43 additions and 42 deletions
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openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
+1
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@@ -345,6 +345,7 @@ void nr_ulsch_extract_rbs_single(int32_t **rxdataF,
n = 0; n = 0;
k_prime = 0; k_prime = 0;
rxF_ext_index = ul_ch0_ext_index = ul_ch0_index = 0; /* In RX Antenna(aarx) loop, Reset the index */
if (is_dmrs_symbol == 0) { if (is_dmrs_symbol == 0) {
// //
openair1/SIMULATION/NR_PHY/ulsim.c
+42 -42
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@@ -1,4 +1,4 @@
/* g*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with * contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. * this work for additional information regarding copyright ownership.
@@ -607,8 +607,8 @@ int main(int argc, char **argv)
frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH) frame_parms = &gNB->frame_parms; //to be initialized I suppose (maybe not necessary for PBCH)
frame_parms->nb_antennas_tx = n_tx; //frame_parms->nb_antennas_tx = n_tx;
frame_parms->nb_antennas_rx = n_rx; //frame_parms->nb_antennas_rx = n_rx;
frame_parms->N_RB_DL = N_RB_DL; frame_parms->N_RB_DL = N_RB_DL;
frame_parms->N_RB_UL = N_RB_UL; frame_parms->N_RB_UL = N_RB_UL;
frame_parms->Ncp = extended_prefix_flag ? EXTENDED : NORMAL; frame_parms->Ncp = extended_prefix_flag ? EXTENDED : NORMAL;
@@ -646,7 +646,7 @@ int main(int argc, char **argv)
gNB->if_inst->NR_PHY_config_req = nr_phy_config_request; gNB->if_inst->NR_PHY_config_req = nr_phy_config_request;
// common configuration // common configuration
rrc_mac_config_req_gNB(0,0,1,pusch_tgt_snrx10,pucch_tgt_snrx10,scc,0,0,NULL); rrc_mac_config_req_gNB(0,0,n_rx,pusch_tgt_snrx10,pucch_tgt_snrx10,scc,0,0,NULL);
// UE dedicated configuration // UE dedicated configuration
rrc_mac_config_req_gNB(0,0,1,pusch_tgt_snrx10,pucch_tgt_snrx10,NULL,1,secondaryCellGroup->spCellConfig->reconfigurationWithSync->newUE_Identity,secondaryCellGroup); rrc_mac_config_req_gNB(0,0,1,pusch_tgt_snrx10,pucch_tgt_snrx10,NULL,1,secondaryCellGroup->spCellConfig->reconfigurationWithSync->newUE_Identity,secondaryCellGroup);
phy_init_nr_gNB(gNB,0,0); phy_init_nr_gNB(gNB,0,0);
@@ -1053,70 +1053,70 @@ int main(int argc, char **argv)
} }
nr_fill_ulsch(gNB,frame,slot,pusch_pdu); //nr_fill_ulsch(gNB,frame,slot,pusch_pdu); // Not needed as its its already filled as apart of "nr_schedule_response(Sched_INFO);"
for (int i=0;i<(TBS/8);i++) ulsch_ue[0]->harq_processes[harq_pid]->a[i]=i&0xff; for (int i=0;i<(TBS/8);i++) ulsch_ue[0]->harq_processes[harq_pid]->a[i]=i&0xff;
if (input_fd == NULL) { if (input_fd == NULL) {
// set FAPI parameters for UE, put them in the scheduled response and call // set FAPI parameters for UE, put them in the scheduled response and call
nr_ue_scheduled_response(&scheduled_response); nr_ue_scheduled_response(&scheduled_response);
/////////////////////////phy_procedures_nr_ue_TX/////////////////////// /////////////////////////phy_procedures_nr_ue_TX///////////////////////
/////////// ///////////
phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id); phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id);
if (n_trials==1) { if (n_trials==1) {
LOG_M("txsig0.m","txs0", UE->common_vars.txdata[0],frame_parms->samples_per_subframe*10,1,1); LOG_M("txsig0.m","txs0", UE->common_vars.txdata[0],frame_parms->samples_per_subframe*10,1,1);
LOG_M("txsig0F.m","txs0F", UE->common_vars.txdataF[0],frame_parms->ofdm_symbol_size*14,1,1); LOG_M("txsig0F.m","txs0F", UE->common_vars.txdataF[0],frame_parms->ofdm_symbol_size*14,1,1);
} }
/////////// ///////////
//////////////////////////////////////////////////// ////////////////////////////////////////////////////
tx_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0); tx_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);
txlev = signal_energy(&UE->common_vars.txdata[0][tx_offset + 5*frame_parms->ofdm_symbol_size + 4*frame_parms->nb_prefix_samples + frame_parms->nb_prefix_samples0], txlev = signal_energy(&UE->common_vars.txdata[0][tx_offset + 5*frame_parms->ofdm_symbol_size + 4*frame_parms->nb_prefix_samples + frame_parms->nb_prefix_samples0],
frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples); frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples);
} }
else n_trials = 1; else n_trials = 1;
if (input_fd == NULL ) { if (input_fd == NULL ) {
sigma_dB = 10 * log10((double)txlev * ((double)frame_parms->ofdm_symbol_size/(12*nb_rb))) - SNR;; sigma_dB = 10 * log10((double)txlev * ((double)frame_parms->ofdm_symbol_size/(12*nb_rb))) - SNR;;
sigma = pow(10,sigma_dB/10); sigma = pow(10,sigma_dB/10);
if(n_trials==1) printf("sigma %f (%f dB), txlev %f (factor %f)\n",sigma,sigma_dB,10*log10((double)txlev),(double)(double)frame_parms->ofdm_symbol_size/(12*nb_rb)); if(n_trials==1) printf("sigma %f (%f dB), txlev %f (factor %f)\n",sigma,sigma_dB,10*log10((double)txlev),(double)(double)frame_parms->ofdm_symbol_size/(12*nb_rb));
for (i=0; i<slot_length; i++) { for (i=0; i<slot_length; i++) {
for (int aa=0; aa<1; aa++) { for (int aa=0; aa<frame_parms->nb_antennas_rx; aa++) {
s_re[aa][i] = ((double)(((short *)&UE->common_vars.txdata[aa][slot_offset]))[(i<<1)]); s_re[aa][i] = ((double)(((short *)&UE->common_vars.txdata[aa][slot_offset]))[(i<<1)]);
s_im[aa][i] = ((double)(((short *)&UE->common_vars.txdata[aa][slot_offset]))[(i<<1)+1]); s_im[aa][i] = ((double)(((short *)&UE->common_vars.txdata[aa][slot_offset]))[(i<<1)+1]);
} }
} }
if (UE2gNB->max_Doppler == 0) {
multipath_channel(UE2gNB,s_re,s_im,r_re,r_im, if (UE2gNB->max_Doppler == 0) {
slot_length,0,(n_trials==1)?1:0); multipath_channel(UE2gNB,s_re,s_im,r_re,r_im,
} else { slot_length,0,(n_trials==1)?1:0);
multipath_tv_channel(UE2gNB,s_re,s_im,r_re,r_im, } else {
2*slot_length,0); multipath_tv_channel(UE2gNB,s_re,s_im,r_re,r_im,
} 2*slot_length,0);
for (i=0; i<slot_length; i++) { }
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) { for (i=0; i<slot_length; i++) {
((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i) + (delay*2)] = (int16_t)((r_re[ap][i]) + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); // convert to fixed point for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1 + (delay*2)] = (int16_t)((r_im[ap][i]) + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); ((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i) + (delay*2)] = (int16_t)((r_re[ap][i]) + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); // convert to fixed point
((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1 + (delay*2)] = (int16_t)((r_im[ap][i]) + (sqrt(sigma/2)*gaussdouble(0.0,1.0)));
/* Add phase noise if enabled */ /* Add phase noise if enabled */
if (pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) { if (pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {
phase_noise(ts, &((int16_t*)&gNB->common_vars.rxdata[ap][slot_offset])[(2*i)], phase_noise(ts, &((int16_t*)&gNB->common_vars.rxdata[ap][slot_offset])[(2*i)],
&((int16_t*)&gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1]); &((int16_t*)&gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1]);
} }
} }
} }
} } /*End input_fd */
if(pusch_pdu->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) { if(pusch_pdu->pdu_bit_map & PUSCH_PDU_BITMAP_PUSCH_PTRS) {