Commit bea3385f authored by Raymond Knopp's avatar Raymond Knopp

changes for ulsim to get functionality back. simulation behaviour for PUSCH is...

changes for ulsim to get functionality back. simulation behaviour for PUSCH is not good (BLER waterfall is way too steep even if SNR threshold is ok). Note develop does more or less the same thing but SNR threshold is lower.
parent afb95b10
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...@@ -324,6 +324,7 @@ int check_crc(uint8_t* decoded_bytes, uint32_t n, uint32_t F, uint8_t crc_type) ...@@ -324,6 +324,7 @@ int check_crc(uint8_t* decoded_bytes, uint32_t n, uint32_t F, uint8_t crc_type)
AssertFatal(1,"Invalid crc_type \n"); AssertFatal(1,"Invalid crc_type \n");
} }
if (crc == oldcrc) if (crc == oldcrc)
return(1); return(1);
else else
......
...@@ -34,6 +34,8 @@ void nr_modulation(uint32_t *in, ...@@ -34,6 +34,8 @@ void nr_modulation(uint32_t *in,
offset = (mod_order==2)? NR_MOD_TABLE_QPSK_OFFSET : (mod_order==4)? NR_MOD_TABLE_QAM16_OFFSET : \ offset = (mod_order==2)? NR_MOD_TABLE_QPSK_OFFSET : (mod_order==4)? NR_MOD_TABLE_QAM16_OFFSET : \
(mod_order==6)? NR_MOD_TABLE_QAM64_OFFSET: (mod_order==8)? NR_MOD_TABLE_QAM256_OFFSET : 0; (mod_order==6)? NR_MOD_TABLE_QAM64_OFFSET: (mod_order==8)? NR_MOD_TABLE_QAM256_OFFSET : 0;
LOG_D(PHY,"nr_modulation: length %d, mod_order %d\n",length,mod_order);
for (int i=0; i<length/mod_order; i++) for (int i=0; i<length/mod_order; i++)
{ {
idx = 0; idx = 0;
......
...@@ -527,7 +527,7 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB, ...@@ -527,7 +527,7 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB,
#ifdef DEBUG_ULSCH_DECODING #ifdef DEBUG_ULSCH_DECODING
if (r==0) { if (r==0) {
write_output("decoder_llr.m","decllr",ulsch_llr,G,1,0); write_output("decoder_llr.m","decllr",ulsch_llr,G,1,0);
write_output("decoder_in.m","dec",&harq_process->d[0][0],(3*8*Kr_bytes)+12,1,0); write_output("decoder_in.m","dec",&harq_process->d[0][0],E,1,0);
} }
printf("decoder input(segment %u) :", r); printf("decoder input(segment %u) :", r);
...@@ -608,7 +608,6 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB, ...@@ -608,7 +608,6 @@ uint32_t nr_ulsch_decoding(PHY_VARS_gNB *phy_vars_gNB,
#endif #endif
ret = ulsch->max_ldpc_iterations + 1; ret = ulsch->max_ldpc_iterations + 1;
} }
nb_total_decod++; nb_total_decod++;
if (no_iteration_ldpc > ulsch->max_ldpc_iterations){ if (no_iteration_ldpc > ulsch->max_ldpc_iterations){
......
...@@ -98,6 +98,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE, ...@@ -98,6 +98,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
uint8_t thread_id, uint8_t thread_id,
int gNB_id) { int gNB_id) {
LOG_D(PHY,"nr_ue_ulsch_procedures hard_id %d %d.%d\n",harq_pid,frame,slot);
uint32_t available_bits, TBS; uint32_t available_bits, TBS;
uint8_t mod_order, cwd_index, num_of_codewords, l; uint8_t mod_order, cwd_index, num_of_codewords, l;
uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5]; uint32_t scrambled_output[NR_MAX_NB_CODEWORDS][NR_MAX_PDSCH_ENCODED_LENGTH>>5];
......
...@@ -111,7 +111,7 @@ int main(int argc, char **argv) ...@@ -111,7 +111,7 @@ int main(int argc, char **argv)
int i; int i;
double SNR, snr0 = -2.0, snr1 = 2.0; double SNR, snr0 = -2.0, snr1 = 2.0;
double sigma, sigma_dB; double sigma, sigma_dB;
double snr_step = 1; double snr_step = .2;
uint8_t snr1set = 0; uint8_t snr1set = 0;
int slot = 8, frame = 0; int slot = 8, frame = 0;
FILE *output_fd = NULL; FILE *output_fd = NULL;
...@@ -127,7 +127,6 @@ int main(int argc, char **argv) ...@@ -127,7 +127,6 @@ int main(int argc, char **argv)
SCM_t channel_model = AWGN; //Rayleigh1_anticorr; SCM_t channel_model = AWGN; //Rayleigh1_anticorr;
uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1; uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1;
//unsigned char frame_type = 0; //unsigned char frame_type = 0;
int frame_length_complex_samples,frame_length_complex_samples_no_prefix;
NR_DL_FRAME_PARMS *frame_parms; NR_DL_FRAME_PARMS *frame_parms;
int loglvl = OAILOG_WARNING; int loglvl = OAILOG_WARNING;
//uint64_t SSB_positions=0x01; //uint64_t SSB_positions=0x01;
...@@ -466,8 +465,6 @@ int main(int argc, char **argv) ...@@ -466,8 +465,6 @@ int main(int argc, char **argv)
//nr_phy_config_request_sim(gNB, N_RB_DL, N_RB_UL, mu, Nid_cell, SSB_positions); //nr_phy_config_request_sim(gNB, N_RB_DL, N_RB_UL, mu, Nid_cell, SSB_positions);
frame_length_complex_samples = frame_parms->samples_per_subframe;
frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP;
//configure UE //configure UE
UE = malloc(sizeof(PHY_VARS_NR_UE)); UE = malloc(sizeof(PHY_VARS_NR_UE));
...@@ -575,6 +572,7 @@ int main(int argc, char **argv) ...@@ -575,6 +572,7 @@ int main(int argc, char **argv)
printf("\n"); printf("\n");
for (int i=0;i<16;i++) printf("%f\n",gaussdouble(0.0,1.0));
for (SNR = snr0; SNR < snr1; SNR += snr_step) { for (SNR = snr0; SNR < snr1; SNR += snr_step) {
varArray_t *table_rx=initVarArray(1000,sizeof(double)); varArray_t *table_rx=initVarArray(1000,sizeof(double));
...@@ -709,54 +707,68 @@ int main(int argc, char **argv) ...@@ -709,54 +707,68 @@ int main(int argc, char **argv)
available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, number_dmrs_symbols, mod_order, 1); available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, number_dmrs_symbols, mod_order, 1);
TBS = nr_compute_tbs(mod_order, code_rate, nb_rb, nb_symb_sch, nb_re_dmrs * number_dmrs_symbols, 0, 0, precod_nbr_layers); TBS = nr_compute_tbs(mod_order, code_rate, nb_rb, nb_symb_sch, nb_re_dmrs * number_dmrs_symbols, 0, 0, precod_nbr_layers);
pusch_pdu->pusch_data.tb_size = TBS>>3;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.tb_size = TBS;
nr_fill_ulsch(gNB,frame,slot,pusch_pdu);
int slot_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);// - (int)(800*factor);
int slot_length = slot_offset - frame_parms->get_samples_slot_timestamp(slot-1,frame_parms,0);
for (int i=0;i<(TBS>>3);i++) ulsch_ue[0]->harq_processes[harq_pid]->a[i]=i&0xff;
if (input_fd == NULL) { if (input_fd == NULL) {
pusch_pdu->pusch_data.tb_size = TBS>>3;
ul_config.ul_config_list[0].pusch_config_pdu.pusch_data.tb_size = TBS;
// set FAPI parameters for UE, put them in the scheduled response and call
nr_ue_scheduled_response(&scheduled_response);
if (SNR==snr0) {
// set FAPI parameters for UE, put them in the scheduled response and call
nr_ue_scheduled_response(&scheduled_response);
/////////////////////////phy_procedures_nr_ue_TX///////////////////////
///////////
phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id, 0);
if (n_trials==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);
}
///////////
////////////////////////////////////////////////////
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],
frame_parms->ofdm_symbol_size + frame_parms->nb_prefix_samples);
txlev_float = (double)txlev/256; // output of signal_energy is fixed point representation
//AWGN
}
}
else n_trials = 1;
/////////////////////////phy_procedures_nr_ue_TX/////////////////////// sigma_dB = 10*log10(txlev_float)-SNR;
/////////// sigma = pow(10,sigma_dB/10);
printf("txlev_float %f, sigma_dB %f\n",10*log10(txlev_float),sigma_dB);
phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id, 0);
if (n_trials==1)
LOG_M("txsig0.m","txs0", UE->common_vars.txdata[0],frame_length_complex_samples,1,1);
///////////
////////////////////////////////////////////////////
tx_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);
txlev = signal_energy_amp_shift(&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);
txlev_float = (double)txlev/(double)AMP; // output of signal_energy is fixed point representation
n_errors = 0; n_errors = 0;
n_false_positive = 0; n_false_positive = 0;
//AWGN errors_scrambling = 0;
sigma_dB = 10*log10(txlev_float)-SNR; errors_decoding = 0;
sigma = pow(10,sigma_dB/10);
}
else n_trials = 1;
int error_flag;
for (trial = 0; trial < n_trials; trial++) { for (trial = 0; trial < n_trials; trial++) {
errors_scrambling = 0; error_flag = 0;
errors_decoding = 0;
//---------------------------------------------------------- //----------------------------------------------------------
//------------------------ add noise ----------------------- //------------------------ add noise -----------------------
//---------------------------------------------------------- //----------------------------------------------------------
if (input_fd == NULL ) { if (input_fd == NULL ) {
for (i=0; i<frame_length_complex_samples; i++) { for (i=0; i<slot_length; i++) {
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) { for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
((short*) gNB->common_vars.rxdata[ap])[(2*i) + (delay*2)] = (((int16_t *)UE->common_vars.txdata[ap])[(i<<1)]) + (int16_t)(sqrt(sigma/2)*gaussdouble(0.0,1.0)); // convert to fixed point ((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i) + (delay*2)] = (int16_t)((double)(((int16_t *)&UE->common_vars.txdata[ap][slot_offset])[(i<<1)])/16.0 + (sqrt(sigma/2)*gaussdouble(0.0,1.0))); // convert to fixed point
((short*) gNB->common_vars.rxdata[ap])[2*i+1 + (delay*2)] = (((int16_t *)UE->common_vars.txdata[ap])[(i<<1)+1]) + (int16_t)(sqrt(sigma/2)*gaussdouble(0.0,1.0)); ((int16_t*) &gNB->common_vars.rxdata[ap][slot_offset])[(2*i)+1 + (delay*2)] = (int16_t)((double)(((int16_t *)&UE->common_vars.txdata[ap][slot_offset])[(i<<1)+1])/16.0 + (sqrt(sigma/2)*gaussdouble(0.0,1.0)));
} }
} }
} }
...@@ -770,8 +782,6 @@ int main(int argc, char **argv) ...@@ -770,8 +782,6 @@ int main(int argc, char **argv)
if (N_RB_DL <217) ta_offset=800; if (N_RB_DL <217) ta_offset=800;
else if (N_RB_DL < 106) ta_offset = 400; else if (N_RB_DL < 106) ta_offset = 400;
int slot_offset = frame_parms->get_samples_slot_timestamp(slot,frame_parms,0);// - (int)(800*factor);
int slot_length = slot_offset - frame_parms->get_samples_slot_timestamp(slot-1,frame_parms,0);
fread((void*)&gNB->common_vars.rxdata[0][slot_offset], fread((void*)&gNB->common_vars.rxdata[0][slot_offset],
sizeof(int16_t), sizeof(int16_t),
slot_length<<1, slot_length<<1,
...@@ -781,7 +791,6 @@ int main(int argc, char **argv) ...@@ -781,7 +791,6 @@ int main(int argc, char **argv)
((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[i], ((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[i],
((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[1+i]); ((int16_t*)&gNB->common_vars.rxdata[0][slot_offset])[1+i]);
fclose(input_fd); fclose(input_fd);
LOG_M("rxsig0.m","rx0",gNB->common_vars.rxdata[0][slot_offset],slot_length,1,1);
} }
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
...@@ -795,6 +804,8 @@ int main(int argc, char **argv) ...@@ -795,6 +804,8 @@ int main(int argc, char **argv)
phy_procedures_gNB_common_RX(gNB, frame, slot); phy_procedures_gNB_common_RX(gNB, frame, slot);
if (n_trials==1) { if (n_trials==1) {
LOG_M("rxsig0.m","rx0",&gNB->common_vars.rxdata[0][0],frame_parms->samples_per_subframe*10,1,1);
LOG_M("rxsigF0.m","rxsF0",gNB->common_vars.rxdataF[0]+start_symbol*frame_parms->ofdm_symbol_size,nb_symb_sch*frame_parms->ofdm_symbol_size,1,1); LOG_M("rxsigF0.m","rxsF0",gNB->common_vars.rxdataF[0]+start_symbol*frame_parms->ofdm_symbol_size,nb_symb_sch*frame_parms->ofdm_symbol_size,1,1);
} }
...@@ -813,9 +824,11 @@ int main(int argc, char **argv) ...@@ -813,9 +824,11 @@ int main(int argc, char **argv)
//////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////
if (gNB->ulsch[0][0]->last_iteration_cnt >= if (gNB->ulsch[0][0]->last_iteration_cnt >=
gNB->ulsch[0][0]->max_ldpc_iterations+1) gNB->ulsch[0][0]->max_ldpc_iterations+1) {
error_flag = 1;
n_errors++; n_errors++;
}
//---------------------------------------------------------- //----------------------------------------------------------
//----------------- count and print errors ----------------- //----------------- count and print errors -----------------
//---------------------------------------------------------- //----------------------------------------------------------
...@@ -847,8 +860,17 @@ int main(int argc, char **argv) ...@@ -847,8 +860,17 @@ int main(int argc, char **argv)
errors_decoding++; errors_decoding++;
} }
} }
if (n_trials == 1) {
if (errors_decoding > 0) { for (int r=0;r<ulsch_ue[0]->harq_processes[harq_pid]->C;r++)
for (int i=0;i<ulsch_ue[0]->harq_processes[harq_pid]->K>>3;i++) {
if ((ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]) != 0) printf("************");
printf("r %d: in[%d] %x, out[%d] %x (%x)\n",r,
i,ulsch_ue[0]->harq_processes[harq_pid]->c[r][i],
i,ulsch_gNB->harq_processes[harq_pid]->c[r][i],
ulsch_ue[0]->harq_processes[harq_pid]->c[r][i]^ulsch_gNB->harq_processes[harq_pid]->c[r][i]);
}
}
if (errors_decoding > 0 && error_flag == 0) {
n_false_positive++; n_false_positive++;
if (n_trials==1) if (n_trials==1)
printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in decoding = %u\n" "\x1B[0m", frame, trial, errors_decoding); printf("\x1B[31m""[frame %d][trial %d]\tnumber of errors in decoding = %u\n" "\x1B[0m", frame, trial, errors_decoding);
...@@ -857,12 +879,12 @@ int main(int argc, char **argv) ...@@ -857,12 +879,12 @@ int main(int argc, char **argv)
} // trial loop } // trial loop
printf("*****************************************\n"); printf("*****************************************\n");
printf("SNR %f: n_errors (negative CRC) = %d/%d, false_positive %d/%d, errors_scrambling %u/%d\n", SNR, n_errors, n_trials, n_false_positive, n_trials, errors_scrambling, n_trials); printf("SNR %f: n_errors (negative CRC) = %d/%d, false_positive %d/%d, errors_scrambling %u/%d\n", SNR, n_errors, n_trials, n_false_positive, n_trials, errors_scrambling, available_bits*n_trials);
printf("\n"); printf("\n");
printf("SNR %f: Channel BLER %e, Channel BER %e\n", SNR,(double)n_errors/n_trials,(double)errors_scrambling/available_bits/n_trials); printf("SNR %f: Channel BLER %e, Channel BER %e\n", SNR,(double)n_errors/n_trials,(double)errors_scrambling/available_bits/n_trials);
printf("*****************************************\n"); printf("*****************************************\n");
printf("\n"); printf("\n");
if (print_perf==1) { if (print_perf==1) {
printDistribution(&gNB->phy_proc_rx,table_rx,"Total PHY proc rx"); printDistribution(&gNB->phy_proc_rx,table_rx,"Total PHY proc rx");
printStatIndent(&gNB->ulsch_channel_estimation_stats,"ULSCH channel estimation time"); printStatIndent(&gNB->ulsch_channel_estimation_stats,"ULSCH channel estimation time");
......
...@@ -382,7 +382,7 @@ int configure_fapi_dl_pdu(int Mod_idP, ...@@ -382,7 +382,7 @@ int configure_fapi_dl_pdu(int Mod_idP,
// antenna ports // antenna ports
dci_pdu_rel15[0].antenna_ports.val = 0; // nb of cdm groups w/o data 1 and dmrs port 0 dci_pdu_rel15[0].antenna_ports.val = 0; // nb of cdm groups w/o data 1 and dmrs port 0
LOG_I(MAC, "[gNB scheduler phytest] DCI type 1 payload: freq_alloc %d (%d,%d,%d), time_alloc %d, vrb to prb %d, mcs %d tb_scaling %d ndi %d rv %d\n", LOG_D(MAC, "[gNB scheduler phytest] DCI type 1 payload: freq_alloc %d (%d,%d,%d), time_alloc %d, vrb to prb %d, mcs %d tb_scaling %d ndi %d rv %d\n",
dci_pdu_rel15[0].frequency_domain_assignment.val, dci_pdu_rel15[0].frequency_domain_assignment.val,
pdsch_pdu_rel15->rbStart, pdsch_pdu_rel15->rbStart,
pdsch_pdu_rel15->rbSize, pdsch_pdu_rel15->rbSize,
...@@ -452,7 +452,7 @@ int configure_fapi_dl_pdu(int Mod_idP, ...@@ -452,7 +452,7 @@ int configure_fapi_dl_pdu(int Mod_idP,
// Hardcode it for now // Hardcode it for now
TBS = dl_tti_pdsch_pdu->pdsch_pdu.pdsch_pdu_rel15.TBSize[0]; TBS = dl_tti_pdsch_pdu->pdsch_pdu.pdsch_pdu_rel15.TBSize[0];
LOG_I(MAC, "DLSCH PDU: start PRB %d n_PRB %d startSymbolAndLength %d start symbol %d nb_symbols %d nb_layers %d nb_codewords %d mcs %d TBS: %d\n", LOG_D(MAC, "DLSCH PDU: start PRB %d n_PRB %d startSymbolAndLength %d start symbol %d nb_symbols %d nb_layers %d nb_codewords %d mcs %d TBS: %d\n",
pdsch_pdu_rel15->rbStart, pdsch_pdu_rel15->rbStart,
pdsch_pdu_rel15->rbSize, pdsch_pdu_rel15->rbSize,
startSymbolAndLength, startSymbolAndLength,
...@@ -543,7 +543,7 @@ void nr_schedule_uss_dlsch_phytest(module_id_t module_idP, ...@@ -543,7 +543,7 @@ void nr_schedule_uss_dlsch_phytest(module_id_t module_idP,
NR_sched_pucch *pucch_sched, NR_sched_pucch *pucch_sched,
nfapi_nr_dl_tti_pdsch_pdu_rel15_t *dlsch_config){ nfapi_nr_dl_tti_pdsch_pdu_rel15_t *dlsch_config){
LOG_I(MAC, "In nr_schedule_uss_dlsch_phytest frame %d slot %d\n",frameP,slotP); LOG_D(MAC, "In nr_schedule_uss_dlsch_phytest frame %d slot %d\n",frameP,slotP);
int post_padding = 0, ta_len = 0, header_length_total = 0, sdu_length_total = 0, num_sdus = 0; int post_padding = 0, ta_len = 0, header_length_total = 0, sdu_length_total = 0, num_sdus = 0;
int lcid, offset, i, header_length_last, TBS_bytes; int lcid, offset, i, header_length_last, TBS_bytes;
......
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