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Commit 2660f4ea authored by Ahmed Hussein's avatar Ahmed Hussein Committed by Thomas Schlichter
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Added frame loop to ulsim

parent 0e78faa7
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Showing with 141 additions and 142 deletions
openair1/SIMULATION/NR_PHY/ulsim.c
View file @ 2660f4ea
......@@ -95,7 +95,7 @@ int main(int argc, char **argv)
SCM_t channel_model = AWGN; //Rayleigh1_anticorr;
uint16_t N_RB_DL = 106, N_RB_UL = 106, mu = 1;
//unsigned char frame_type = 0;
int frame = 0;
int number_of_frames = 1;
int frame_length_complex_samples;
NR_DL_FRAME_PARMS *frame_parms;
int loglvl = OAILOG_WARNING;
......@@ -190,7 +190,7 @@ int main(int argc, char **argv)
break;*/
case 'n':
n_trials = atoi(optarg);
number_of_frames = atoi(optarg);
break;
case 's':
......@@ -329,9 +329,6 @@ int main(int argc, char **argv)
gNB = RC.gNB[0][0];
//gNB_config = &gNB->gNB_config;
UE_proc.nr_tti_tx = slot;
UE_proc.frame_tx = frame;
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_rx = n_rx;
......@@ -378,9 +375,8 @@ int main(int argc, char **argv)
}
}
unsigned char harq_pid = 0;
unsigned int TBS = 8424;
unsigned int TBS;
unsigned int available_bits;
uint8_t nb_re_dmrs = UE->dmrs_UplinkConfig.pusch_maxLength*(UE->dmrs_UplinkConfig.pusch_dmrs_type == pusch_dmrs_type1)?6:4;
uint8_t length_dmrs = 1;
......@@ -394,170 +390,173 @@ int main(int argc, char **argv)
nfapi_nr_ul_config_ulsch_pdu *rel15_ul = &ulsch_gNB->harq_processes[harq_pid]->ulsch_pdu;
NR_UE_ULSCH_t **ulsch_ue = UE->ulsch[0][0];
// --------- setting rel15_ul parameters for gNB --------
rel15_ul->rnti = n_rnti;
rel15_ul->ulsch_pdu_rel15.start_rb = start_rb;
rel15_ul->ulsch_pdu_rel15.number_rbs = nb_rb;
rel15_ul->ulsch_pdu_rel15.start_symbol = start_symbol;
rel15_ul->ulsch_pdu_rel15.number_symbols = nb_symb_sch;
rel15_ul->ulsch_pdu_rel15.nb_re_dmrs = nb_re_dmrs;
rel15_ul->ulsch_pdu_rel15.length_dmrs = length_dmrs;
rel15_ul->ulsch_pdu_rel15.Qm = mod_order;
rel15_ul->ulsch_pdu_rel15.mcs = Imcs;
rel15_ul->ulsch_pdu_rel15.rv = 0;
rel15_ul->ulsch_pdu_rel15.ndi = 0;
rel15_ul->ulsch_pdu_rel15.n_layers = precod_nbr_layers;
///////////////////////////////////////////////////
nr_scheduled_response_t scheduled_response;
fapi_nr_ul_config_request_t ul_config;
//fapi_nr_tx_request_t tx_request;
scheduled_response.module_id = 0;
scheduled_response.CC_id = 0;
scheduled_response.frame = frame;
scheduled_response.slot = slot;
scheduled_response.dl_config = NULL;
scheduled_response.ul_config = &ul_config;
scheduled_response.dl_config = NULL;
ul_config.sfn_slot = slot;
ul_config.number_pdus = 1;
ul_config.ul_config_list[0].pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH;
ul_config.ul_config_list[0].ulsch_config_pdu.rnti = n_rnti;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.number_rbs = nb_rb;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.start_rb = start_rb;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.number_symbols = nb_symb_sch;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.start_symbol = start_symbol;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.mcs = Imcs;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.ndi = 0;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.rv = 0;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.n_layers = precod_nbr_layers;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.harq_process_nbr = harq_pid;
//there are plenty of other parameters that we don't seem to be using for now. e.g.
//ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.absolute_delta_PUSCH = 0;
// set FAPI parameters for UE, put them in the scheduled response and call
nr_ue_scheduled_response(&scheduled_response);
unsigned char *estimated_output_bit;
unsigned char *test_input_bit;
unsigned int errors_bit = 0;
uint32_t errors_bit = 0;
uint32_t errors_scrambling = 0;
uint32_t frames_in_error = 0;
test_input_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
estimated_output_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16 * 68 * 384);
/////////////////////////phy_procedures_nr_ue_TX///////////////////////
///////////
phy_procedures_nrUE_TX(UE, &UE_proc, gNB_id, 0);
///////////
////////////////////////////////////////////////////
tx_offset = slot*frame_parms->samples_per_slot;
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
nr_scheduled_response_t scheduled_response;
fapi_nr_ul_config_request_t ul_config;
for (int frame = 0; frame < number_of_frames; frame++) {
// printf("***********\n");
// printf("frame = %d\n", frame);
// printf("***********\n");
UE_proc.nr_tti_tx = slot;
UE_proc.frame_tx = frame;
// --------- setting rel15_ul parameters for gNB --------
rel15_ul->rnti = n_rnti;
rel15_ul->ulsch_pdu_rel15.start_rb = start_rb;
rel15_ul->ulsch_pdu_rel15.number_rbs = nb_rb;
rel15_ul->ulsch_pdu_rel15.start_symbol = start_symbol;
rel15_ul->ulsch_pdu_rel15.number_symbols = nb_symb_sch;
rel15_ul->ulsch_pdu_rel15.nb_re_dmrs = nb_re_dmrs;
rel15_ul->ulsch_pdu_rel15.length_dmrs = length_dmrs;
rel15_ul->ulsch_pdu_rel15.Qm = mod_order;
rel15_ul->ulsch_pdu_rel15.mcs = Imcs;
rel15_ul->ulsch_pdu_rel15.rv = 0;
rel15_ul->ulsch_pdu_rel15.ndi = 0;
rel15_ul->ulsch_pdu_rel15.n_layers = precod_nbr_layers;
///////////////////////////////////////////////////
//fapi_nr_tx_request_t tx_request;
printf("\n");
for (SNR = snr0; SNR < snr1; SNR += snr_step) {
scheduled_response.module_id = 0;
scheduled_response.CC_id = 0;
scheduled_response.frame = frame;
scheduled_response.slot = slot;
scheduled_response.dl_config = NULL;
scheduled_response.ul_config = &ul_config;
scheduled_response.dl_config = NULL;
ul_config.sfn_slot = slot;
ul_config.number_pdus = 1;
ul_config.ul_config_list[0].pdu_type = FAPI_NR_UL_CONFIG_TYPE_PUSCH;
ul_config.ul_config_list[0].ulsch_config_pdu.rnti = n_rnti;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.number_rbs = nb_rb;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.start_rb = start_rb;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.number_symbols = nb_symb_sch;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.start_symbol = start_symbol;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.mcs = Imcs;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.ndi = 0;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.rv = 0;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.n_layers = precod_nbr_layers;
ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.harq_process_nbr = harq_pid;
//there are plenty of other parameters that we don't seem to be using for now. e.g.
//ul_config.ul_config_list[0].ulsch_config_pdu.ulsch_pdu_rel15.absolute_delta_PUSCH = 0;
// 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);
///////////
////////////////////////////////////////////////////
tx_offset = slot*frame_parms->samples_per_slot;
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
for (SNR = snr0; SNR < snr1; SNR += snr_step) {
n_errors = 0;
n_false_positive = 0;
//AWGN
sigma_dB = 10*log10(txlev_float)-SNR;
sigma = pow(10,sigma_dB/10);
for (trial = 0; trial < n_trials; trial++) {
errors_scrambling = 0;
errors_bit = 0;
for (i=0; i<frame_length_complex_samples; i++) {
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
((short*) gNB->common_vars.rxdata[ap])[2*i] = (((int16_t *)UE->common_vars.txdata[ap])[(i<<1)]) + (int16_t)(sqrt(sigma/2)*gaussdouble(0.0,1.0)*(double)AMP); // convert to fixed point
((short*) gNB->common_vars.rxdata[ap])[2*i+1] = (((int16_t *)UE->common_vars.txdata[ap])[(i<<1)+1]) + (int16_t)(sqrt(sigma/2)*gaussdouble(0.0,1.0)*(double)AMP);
}
}
n_errors = 0;
n_false_positive = 0;
phy_procedures_gNB_common_RX(gNB, frame, slot);
//AWGN
sigma_dB = 10*log10(txlev_float)-SNR;
sigma = pow(10,sigma_dB/10);
phy_procedures_gNB_uespec_RX(gNB, frame, slot, rel15_ul->ulsch_pdu_rel15.start_symbol, rel15_ul->ulsch_pdu_rel15.start_symbol + rel15_ul->ulsch_pdu_rel15.number_symbols);
for (trial = 0; trial < n_trials; trial++) {
//----------------------------------------------------------
//---------------------- count errors ----------------------
//----------------------------------------------------------
errors_scrambling = 0;
errors_bit = 0;
for (i = 0; i < available_bits; i++) {
for (i=0; i<frame_length_complex_samples; i++) {
for (ap=0; ap<frame_parms->nb_antennas_rx; ap++) {
((short*) gNB->common_vars.rxdata[ap])[2*i] = (((int16_t *)UE->common_vars.txdata[ap])[(i<<1)])+ (int16_t)(sqrt(sigma/2)*gaussdouble(0.0,1.0)*(double)AMP); // convert to fixed point
((short*) gNB->common_vars.rxdata[ap])[2*i+1] = (((int16_t *)UE->common_vars.txdata[ap])[(i<<1)+1])+ (int16_t)(sqrt(sigma/2)*gaussdouble(0.0,1.0)*(double)AMP);
if(((ulsch_ue[0]->g[i] == 0) && (gNB->pusch_vars[UE_id]->llr[i] <= 0)) ||
((ulsch_ue[0]->g[i] == 1) && (gNB->pusch_vars[UE_id]->llr[i] >= 0)))
{
if(errors_scrambling == 0) {
printf("\n");
printf("First bit in error in unscrambling in frame %d = %d\n", frame, i);
}
errors_scrambling++;
}
}
}
phy_procedures_gNB_common_RX(gNB, frame, slot);
for (i = 0; i < TBS; i++) {
phy_procedures_gNB_uespec_RX(gNB, frame, slot, rel15_ul->ulsch_pdu_rel15.start_symbol, rel15_ul->ulsch_pdu_rel15.start_symbol + rel15_ul->ulsch_pdu_rel15.number_symbols);
estimated_output_bit[i] = (ulsch_gNB->harq_processes[harq_pid]->b[i/8] & (1 << (i & 7))) >> (i & 7);
test_input_bit[i] = (ulsch_ue[0]->harq_processes[harq_pid]->b[i / 8] & (1 << (i & 7))) >> (i & 7); // Further correct for multiple segments
//----------------------------------------------------------
//---------------------- count errors ----------------------
//----------------------------------------------------------
printf("available_bits = %d\n",available_bits);
for (i = 0; i < available_bits; i++) {
if(((ulsch_ue[0]->g[i] == 0) && (gNB->pusch_vars[UE_id]->llr[i] <= 0)) ||
((ulsch_ue[0]->g[i] == 1) && (gNB->pusch_vars[UE_id]->llr[i] >= 0)))
{
if(errors_scrambling == 0) {
printf("\n");
printf("First bit in error in unscrambling = %d\n",i);
if (estimated_output_bit[i] != test_input_bit[i]) {
if(errors_bit == 0)
printf("First bit in error in decoding in frame %d = %d\n", frame, i);
errors_bit++;
}
errors_scrambling++;
}
}
////////////////////////////////////////////////////////////
if (errors_scrambling > 0) {
if (n_trials == 1)
printf("frame %d, errors_scrambling = %d (trial %d)\n", frame, errors_scrambling, trial);
}
for (i = 0; i < TBS; i++) {
if (errors_bit > 0) {
frames_in_error++;
n_false_positive++;
estimated_output_bit[i] = (ulsch_gNB->harq_processes[harq_pid]->b[i/8] & (1 << (i & 7))) >> (i & 7);
test_input_bit[i] = (ulsch_ue[0]->harq_processes[harq_pid]->b[i / 8] & (1 << (i & 7))) >> (i & 7); // Further correct for multiple segments
if (n_trials == 1)
printf("frame %d, errors_bit = %d (trial %d)\n", frame, errors_bit, trial);
if (estimated_output_bit[i] != test_input_bit[i]) {
if(errors_bit == 0)
printf("First bit in error in decoding = %d\n",i);
errors_bit++;
printf("*****************************************\n");
printf("SNR %f, (false positive %f)\n", SNR,
(float) n_false_positive / (float) n_trials);
printf("*****************************************\n");
printf("\n");
}
}
////////////////////////////////////////////////////////////
if (errors_scrambling > 0) {
if (n_trials == 1)
printf("errors_scrambling = %d (trial %d)\n", errors_scrambling, trial);
}
if (errors_bit > 0) {
n_false_positive++;
if (n_trials == 1)
printf("errors_bit = %d (trial %d)\n", errors_bit, trial);
}
printf("\n");
} // [hna] for (trial = 0; trial < n_trials; trial++)
printf("*****************************************\n");
printf("SNR %f, (false positive %f)\n", SNR,
(float) n_false_positive / (float) n_trials);
printf("*****************************************\n");
printf("\n");
} // [hna] for (trial = 0; trial < n_trials; trial++)
if (errors_bit == 0) {
printf("PUSCH test OK\n");
printf("\n");
break;
}
printf("\n");
} // [hna] for (SNR = snr0; SNR < snr1; SNR += snr_step)
if (errors_bit == 0)
break;
} // [hna] for (SNR = snr0; SNR < snr1; SNR += snr_step)
} // frame loop
if(frames_in_error == 0) {
printf("*************\n");
printf("PUSCH test OK\n");
printf("*************\n");
}
printf("\n");
for (i = 0; i < 2; i++) {
......
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