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Commit f2839eaf authored by Florian Kaltenberger's avatar Florian Kaltenberger
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some fixes in dlschsim + nr_dlsch_decoding

parent d7b80ffb
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Showing with 331 additions and 349 deletions
openair1/PHY/NR_UE_TRANSPORT/nr_dlsch_decoding.c
View file @ f2839eaf
......@@ -292,7 +292,7 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
harq_process->G = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs, harq_process->Qm,harq_process->Nl);
G = harq_process->G;
printf("DLSCH Decoding, harq_pid %d TBS %d G %d mcs %d Nl %d nb_symb_sch %d \n",harq_pid,A,G, harq_process->mcs, harq_process->Nl, nb_symb_sch);
//printf("DLSCH Decoding, harq_pid %d TBS %d G %d mcs %d Nl %d nb_symb_sch %d \n",harq_pid,A,G, harq_process->mcs, harq_process->Nl, nb_symb_sch);
if (harq_process->round == 0) {
// This is a new packet, so compute quantities regarding segmentation
......@@ -325,7 +325,7 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
kc = 52;
}
p_decParams->numMaxIter = 2;
p_decParams->numMaxIter = dlsch->max_ldpc_iterations;
Kr = p_decParams->Z*kb;
p_decParams->outMode= 0;
......@@ -365,7 +365,7 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
for (r=0; r<harq_process->C; r++) {
printf("start rx segment %d\n",r);
//printf("start rx segment %d\n",r);
#if UE_TIMING_TRACE
start_meas(dlsch_rate_unmatching_stats);
......@@ -519,13 +519,12 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
*/
nb_total_decod++;
if (no_iteration_ldpc > 10){
if (no_iteration_ldpc > dlsch->max_ldpc_iterations){
nb_error_decod++;
ret = 1+dlsch->max_ldpc_iterations;
}
else {
ret=2;
}
ret=no_iteration_ldpc;
//if (!nb_total_decod%10000){
printf("Error number of iteration LPDC %d %ld/%ld \n", no_iteration_ldpc, nb_error_decod,nb_total_decod);fflush(stdout);
//}
......@@ -538,13 +537,13 @@ uint32_t nr_dlsch_decoding(PHY_VARS_NR_UE *phy_vars_ue,
harq_process->c[r][m]= (uint8_t) llrProcBuf[m];
}
//#ifdef DEBUG_DLSCH_DECODING
#ifdef DEBUG_DLSCH_DECODING
//printf("output decoder %d %d %d %d %d \n", harq_process->c[r][0], harq_process->c[r][1], harq_process->c[r][2],harq_process->c[r][3], harq_process->c[r][4]);
for (int k=0;k<32;k++)
printf("output decoder [%d] = 0x%02x \n", k, harq_process->c[r][k]);
printf("no_iterations_ldpc %d (ret %d)\n",no_iteration_ldpc,ret);
//write_output("dec_output.m","dec0",harq_process->c[0],Kr_bytes,1,4);
//#endif
#endif
#if UE_TIMING_TRACE
......@@ -1233,8 +1232,8 @@ if (harq_process->C>1) { // wakeup worker if more than 1 segment
llrProcBuf,
p_procTime);
if (no_iteration_ldpc > 2)
printf("Error number of iteration LPDC %d\n", no_iteration_ldpc);
//if (no_iteration_ldpc > 2)
//printf("Error number of iteration LPDC %d\n", no_iteration_ldpc);
//else
//printf("OK number of iteration LPDC %d\n", no_iteration_ldpc);
......
openair1/SIMULATION/NR_PHY/dlschsim.c
View file @ f2839eaf
......@@ -61,36 +61,50 @@ double cpuf;
// dummy functions
int nfapi_mode=0;
int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req) { return(0);}
int oai_nfapi_tx_req(nfapi_tx_request_t *tx_req) { return(0); }
int oai_nfapi_hi_dci0_req(nfapi_hi_dci0_request_t *hi_dci0_req) {
return(0);
}
int oai_nfapi_tx_req(nfapi_tx_request_t *tx_req) {
return(0);
}
int oai_nfapi_dl_config_req(nfapi_dl_config_request_t *dl_config_req) { return(0); }
int oai_nfapi_dl_config_req(nfapi_dl_config_request_t *dl_config_req) {
return(0);
}
int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req) { return(0); }
int oai_nfapi_ul_config_req(nfapi_ul_config_request_t *ul_config_req) {
return(0);
}
int oai_nfapi_nr_dl_config_req(nfapi_nr_dl_config_request_t *dl_config_req) {return(0);}
int oai_nfapi_nr_dl_config_req(nfapi_nr_dl_config_request_t *dl_config_req) {
return(0);
}
uint32_t from_earfcn(int eutra_bandP,uint32_t dl_earfcn) {return(0);}
int32_t get_uldl_offset(int eutra_bandP) {return(0);}
uint32_t from_earfcn(int eutra_bandP,uint32_t dl_earfcn) {
return(0);
}
int32_t get_uldl_offset(int eutra_bandP) {
return(0);
}
NR_IF_Module_t *NR_IF_Module_init(int Mod_id){return(NULL);}
NR_IF_Module_t *NR_IF_Module_init(int Mod_id) {
return(NULL);
}
void exit_function(const char* file, const char* function, const int line,const char *s) {
const char * msg= s==NULL ? "no comment": s;
void exit_function(const char *file, const char *function, const int line,const char *s) {
const char *msg= s==NULL ? "no comment": s;
printf("Exiting at: %s:%d %s(), %s\n", file, line, function, msg);
exit(-1);
}
// needed for some functions
PHY_VARS_NR_UE * PHY_vars_UE_g[1][1]={{NULL}};
PHY_VARS_NR_UE *PHY_vars_UE_g[1][1]= {{NULL}};
uint16_t n_rnti=0x1234;
char quantize(double D,double x,unsigned char B)
{
char quantize(double D,double x,unsigned char B) {
double qxd;
short maxlev;
qxd = floor(x/D);
maxlev = 1<<(B-1);//(char)(pow(2,B-1));
//printf("x=%f,qxd=%f,maxlev=%d\n",x,qxd, maxlev);
......@@ -103,11 +117,8 @@ char quantize(double D,double x,unsigned char B)
return((char)qxd);
}
int main(int argc, char **argv)
{
int main(int argc, char **argv) {
char c;
int i; //,j,l,aa;
double SNR,SNR_lin,snr0=-2.0,snr1=2.0;
double snr_step = 0.1;
......@@ -120,42 +131,37 @@ int main(int argc, char **argv)
uint8_t write_output_file=0;
// int subframe_offset;
// char fname[40], vname[40];
int trial,n_trials=1,n_errors;
int trial,n_trials=1,n_errors=0,n_false_positive=0;
uint8_t transmission_mode = 1,n_tx=1,n_rx=1;
uint16_t Nid_cell=0;
channel_desc_t *gNB2UE;
uint8_t extended_prefix_flag=0;
int8_t interf1=-21,interf2=-21;
FILE *input_fd=NULL,*pbch_file_fd=NULL;
char input_val_str[50],input_val_str2[50];
//uint16_t NB_RB=25;
SCM_t channel_model=AWGN;//Rayleigh1_anticorr;
uint8_t N_RB_DL=106,mu=1;
unsigned char frame_type = 0;
unsigned char pbch_phase = 0;
int frame=0,subframe=0;
int frame_length_complex_samples;
//int frame_length_complex_samples_no_prefix;
NR_DL_FRAME_PARMS *frame_parms;
//nfapi_nr_config_request_t *gNB_config;
uint8_t Kmimo;
uint32_t Nsoft;
double sigma;
unsigned char qbits=8;
int ret;
int run_initial_sync=0;
int loglvl=OAILOG_WARNING;
float target_error_rate = 0.01;
uint16_t nb_symb_sch =12;
uint16_t nb_rb = 50;
uint8_t Imcs=9;
cpuf = get_cpu_freq_GHz();
if ( load_configmodule(argc,argv) == 0) {
......@@ -165,7 +171,7 @@ int main(int argc, char **argv)
//logInit();
randominit(0);
while ((c = getopt (argc, argv, "f:hA:pf:g:i:j:n:s:S:t:x:y:z:N:F:GR:dP:")) != -1) {
while ((c = getopt (argc, argv, "df:hpg:i:j:n:l:m:r:s:S:y:z:N:F:R:P:")) != -1) {
switch (c) {
case 'f':
write_output_file=1;
......@@ -242,11 +248,6 @@ int main(int argc, char **argv)
msg("Setting SNR1 to %f\n",snr1);
break;
/*
case 't':
Td= atof(optarg);
break;
*/
case 'p':
extended_prefix_flag=1;
break;
......@@ -260,17 +261,6 @@ int main(int argc, char **argv)
}
break;
*/
case 'x':
transmission_mode=atoi(optarg);
if ((transmission_mode!=1) &&
(transmission_mode!=2) &&
(transmission_mode!=6)) {
msg("Unsupported transmission mode %d\n",transmission_mode);
exit(-1);
}
break;
case 'y':
n_tx=atoi(optarg);
......@@ -318,6 +308,18 @@ int main(int argc, char **argv)
break;
case 'm':
Imcs = atoi(optarg);
break;
case 'l':
nb_symb_sch = atoi(optarg);
break;
case 'r':
nb_rb = atoi(optarg);
break;
default:
case 'h':
printf("%s -h(elp) -p(extended_prefix) -N cell_id -f output_filename -F input_filename -g channel_model -n n_frames -t Delayspread -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant -i Intefrence0 -j Interference1 -A interpolation_file -C(alibration offset dB) -N CellId\n",
......@@ -368,8 +370,8 @@ int main(int argc, char **argv)
exit(-1);
}
RC.gNB = (PHY_VARS_gNB***) malloc(sizeof(PHY_VARS_gNB **));
RC.gNB[0] = (PHY_VARS_gNB**) malloc(sizeof(PHY_VARS_gNB *));
RC.gNB = (PHY_VARS_gNB ** *) malloc(sizeof(PHY_VARS_gNB **));
RC.gNB[0] = (PHY_VARS_gNB **) malloc(sizeof(PHY_VARS_gNB *));
RC.gNB[0][0] = malloc(sizeof(PHY_VARS_gNB));
gNB = RC.gNB[0][0];
//gNB_config = &gNB->gNB_config;
......@@ -377,43 +379,36 @@ int main(int argc, char **argv)
frame_parms->nb_antennas_tx = n_tx;
frame_parms->nb_antennas_rx = n_rx;
frame_parms->N_RB_DL = N_RB_DL;
crcTableInit();
nr_phy_config_request_sim(gNB,N_RB_DL,N_RB_DL,mu);
phy_init_nr_gNB(gNB,0,0);
//init_eNB_afterRU();
frame_length_complex_samples = frame_parms->samples_per_subframe;
//frame_length_complex_samples_no_prefix = frame_parms->samples_per_subframe_wCP;
s_re = malloc(2*sizeof(double*));
s_im = malloc(2*sizeof(double*));
r_re = malloc(2*sizeof(double*));
r_im = malloc(2*sizeof(double*));
txdata = malloc(2*sizeof(int*));
s_re = malloc(2*sizeof(double *));
s_im = malloc(2*sizeof(double *));
r_re = malloc(2*sizeof(double *));
r_im = malloc(2*sizeof(double *));
txdata = malloc(2*sizeof(int *));
for (i=0; i<2; i++) {
s_re[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(s_re[i],frame_length_complex_samples*sizeof(double));
s_im[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(s_im[i],frame_length_complex_samples*sizeof(double));
r_re[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(r_re[i],frame_length_complex_samples*sizeof(double));
r_im[i] = malloc(frame_length_complex_samples*sizeof(double));
bzero(r_im[i],frame_length_complex_samples*sizeof(double));
txdata[i] = malloc(frame_length_complex_samples*sizeof(int));
bzero(r_re[i],frame_length_complex_samples*sizeof(int));
}
if (pbch_file_fd!=NULL) {
load_pbch_desc(pbch_file_fd);
}
/* for (int k=0; k<2; k++) {
/* for (int k=0; k<2; k++) {
// Create transport channel structures for 2 transport blocks (MIMO)
for (i=0; i<2; i++) {
gNB->dlsch[k][i] = new_gNB_dlsch(Kmimo,8,Nsoft,0,frame_parms,gNB_config);
......@@ -422,21 +417,20 @@ int main(int argc, char **argv)
printf("Can't get eNB dlsch structures\n");
exit(-1);
}
gNB->dlsch[k][i]->Nsoft = 10;
gNB->dlsch[k][i]->Nsoft = 10;
gNB->dlsch[k][i]->rnti = n_rnti+k;
}
}*/
//configure UE
UE = malloc(sizeof(PHY_VARS_NR_UE));
memcpy(&UE->frame_parms,frame_parms,sizeof(NR_DL_FRAME_PARMS));
//phy_init_nr_top(frame_parms);
if (init_nr_ue_signal(UE, 1, 0) != 0)
{
if (init_nr_ue_signal(UE, 1, 0) != 0) {
printf("Error at UE NR initialisation\n");
exit(-1);
}
//nr_init_frame_parms_ue(&UE->frame_parms);
//init_nr_ue_transport(UE, 0);
for (int sf = 0; sf < 2; sf++) {
......@@ -454,49 +448,37 @@ gNB->dlsch[k][i]->Nsoft = 10;
UE->dlsch_SI[0] = new_nr_ue_dlsch(1,1,Nsoft,5,N_RB_DL,0);
UE->dlsch_ra[0] = new_nr_ue_dlsch(1,1,Nsoft,5,N_RB_DL,0);
unsigned char harq_pid = 0; //dlsch->harq_ids[subframe];
NR_gNB_DLSCH_t *dlsch = gNB->dlsch[0][0];
nfapi_nr_dl_config_dlsch_pdu_rel15_t rel15 = dlsch->harq_processes[harq_pid]->dlsch_pdu.dlsch_pdu_rel15;
// dlsch->harq_processes[0]->b = (unsigned char*)malloc16(800);
// dlsch->harq_processes[i]->pdu = (uint8_t*)malloc16(MAX_NR_DLSCH_PAYLOAD_BYTES/bw_scaling);
nfapi_nr_dl_config_dlsch_pdu_rel15_t *rel15 = &dlsch->harq_processes[harq_pid]->dlsch_pdu.dlsch_pdu_rel15;
time_stats_t *rm_stats;
time_stats_t *te_stats;
time_stats_t *i_stats;
uint8_t is_crnti;
uint8_t llr8_flag;
unsigned int TBS = 8424;
unsigned int available_bits;
uint16_t nb_symb_sch =8;
uint8_t nb_re_dmrs = 6;
uint16_t length_dmrs = 1;
unsigned char mod_order;
uint16_t nb_rb = 50;
uint8_t Imcs=9;
uint8_t Nl=1;
uint8_t rvidx = 0;
dlsch->rnti =1;
/*dlsch->harq_processes[0]->mcs = Imcs;
dlsch->harq_processes[0]->rvidx = rvidx;*/
//printf("dlschsim harqid %d nb_rb %d, mscs %d\n",dlsch->harq_ids[subframe],
// dlsch->harq_processes[0]->nb_rb,dlsch->harq_processes[0]->mcs,dlsch->harq_processes[0]->Nl);
mod_order = nr_get_Qm(Imcs,1);
available_bits = nr_get_G(nb_rb, nb_symb_sch, nb_re_dmrs, length_dmrs,mod_order,1);
TBS= nr_compute_tbs(Imcs,nb_rb,nb_symb_sch,nb_re_dmrs,length_dmrs,Nl);
printf("available bits %d TBS %d mod_order %d\n",available_bits, TBS, mod_order);
//dlsch->harq_ids[subframe]= 0;
rel15.n_prb = nb_rb;
rel15.nb_symbols = nb_symb_sch;
rel15.modulation_order = mod_order;
rel15.nb_layers = Nl;
rel15.nb_re_dmrs = nb_re_dmrs;
rel15->n_prb = nb_rb;
rel15->nb_symbols = nb_symb_sch;
rel15->modulation_order = mod_order;
rel15->nb_layers = Nl;
rel15->nb_re_dmrs = nb_re_dmrs;
rel15->transport_block_size = TBS;
double *modulated_input = malloc16(sizeof(double) * 16*68*384);
short *channel_output_fixed = malloc16(sizeof( short) *16* 68*384);
short *channel_output_uncoded = malloc16(sizeof(unsigned short) *16* 68*384);
......@@ -505,11 +487,9 @@ gNB->dlsch[k][i]->Nsoft = 10;
unsigned char *estimated_output_bit;
unsigned char *test_input_bit;
unsigned int errors_bit =0;
test_input_bit = (unsigned char*) malloc16(sizeof(unsigned char) * 16*68*384);
estimated_output = (unsigned char*) malloc16(sizeof(unsigned char) * 16*68*384);
estimated_output_bit = (unsigned char*) malloc16(sizeof(unsigned char) * 16*68*384);
test_input_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16*68*384);
estimated_output = (unsigned char *) malloc16(sizeof(unsigned char) * 16*68*384);
estimated_output_bit = (unsigned char *) malloc16(sizeof(unsigned char) * 16*68*384);
NR_UE_DLSCH_t *dlsch0_ue = UE->dlsch[UE->current_thread_id[subframe]][0][0];
NR_DL_UE_HARQ_t *harq_process = dlsch0_ue->harq_processes[harq_pid];
harq_process->mcs = Imcs;
......@@ -518,11 +498,11 @@ gNB->dlsch[k][i]->Nsoft = 10;
harq_process->Qm = mod_order;
harq_process->rvidx = rvidx;
printf("harq process ue mcs = %d Qm = %d\n", harq_process->mcs, harq_process->Qm);
unsigned char *test_input;
test_input=(unsigned char *)malloc16(sizeof(unsigned char) * TBS/8);
for (i=0; i<TBS/8; i++) {
test_input[i]=(unsigned char) rand();}
for (i=0; i<TBS/8; i++)
test_input[i]=(unsigned char) rand();
estimated_output = harq_process->b;
......@@ -537,20 +517,20 @@ gNB->dlsch[k][i]->Nsoft = 10;
subframe,
dlsch,
frame_parms);
}
for (SNR=snr0;SNR<snr1;SNR+=snr_step)
{
for (trial=0; trial < n_trials; trial++)
{
for (SNR=snr0; SNR<snr1; SNR+=snr_step) {
n_errors = 0;
n_false_positive = 0;
for (trial=0; trial < n_trials; trial++) {
for (i = 0; i < available_bits; i++) {
#ifdef DEBUG_CODER
#ifdef DEBUG_CODER
if ((i&0xf)==0)
printf("\ne %d..%d: ",i,i+15);
#endif
#endif
//if (i<16)
// printf("encoder output f[%d] = %d\n",i,dlsch->harq_processes[0]->f[i]);
......@@ -560,7 +540,6 @@ gNB->dlsch[k][i]->Nsoft = 10;
modulated_input[i]=-1.0;///sqrt(2);
//if (i<16) printf("modulated_input[%d] = %d\n",i,modulated_input[i]);
//SNR =10;
SNR_lin = pow(10,SNR/10.0);
sigma = 1.0/sqrt(2*SNR_lin);
......@@ -569,7 +548,6 @@ gNB->dlsch[k][i]->Nsoft = 10;
//printf("llr[%d]=%d\n",i,channel_output_fixed[i]);
//printf("channel_output_fixed[%d]: %d\n",i,channel_output_fixed[i]);
//channel_output_fixed[i] = (char)quantize(1,channel_output_fixed[i],qbits);
//if (i<16) printf("channel_output_fixed[%d] = %d\n",i,channel_output_fixed[i]);
......@@ -582,19 +560,15 @@ gNB->dlsch[k][i]->Nsoft = 10;
if (channel_output_uncoded[i] != dlsch->harq_processes[harq_pid]->f[i])
errors_bit_uncoded = errors_bit_uncoded + 1;
}
//if (errors_bit_uncoded>10)
printf("errors bits uncoded %f\n", errors_bit_uncoded);
#ifdef DEBUG_CODER
#ifdef DEBUG_CODER
printf("\n");
exit(-1);
#endif
nr_dlsch_decoding(UE,
#endif
ret = nr_dlsch_decoding(UE,
channel_output_fixed,
&UE->frame_parms,
dlsch0_ue,
......@@ -606,24 +580,35 @@ gNB->dlsch[k][i]->Nsoft = 10;
is_crnti,
llr8_flag);
if (ret>dlsch0_ue->max_ldpc_iterations)
n_errors++;
//count errors
for (i=0; i<TBS; i++)
{
errors_bit = 0;
for (i=0; i<TBS; i++) {
estimated_output_bit[i] = (estimated_output[i/8]&(1<<(i&7)))>>(i&7);
test_input_bit[i] = (test_input[i/8]&(1<<(i&7)))>>(i&7); // Further correct for multiple segments
if (estimated_output_bit[i] != test_input_bit[i])
{
errors_bit = (errors_bit) + 1;
if (estimated_output_bit[i] != test_input_bit[i]) {
errors_bit++;
//printf("estimated bits error occurs @%d ",i);
}
}
//if (errors_bit>10)
if (errors_bit>0) {
n_false_positive++;
if (n_trials == 1)
printf("\n errors_bit %d (trial %d)\n", errors_bit,trial);
}
}
printf("SNR %f, BER %f \n",SNR,(float)errors_bit/(float)n_trials/(float)TBS);
printf("SNR %f, BLER %f (false positive %f)\n",SNR,(float)n_errors/(float)n_trials,(float)n_false_positive/(float)n_trials);
if ((float)n_errors/(float)n_trials < target_error_rate)
break;
}
/*LOG_M("txsigF0.m","txsF0", gNB->common_vars.txdataF[0],frame_length_complex_samples_no_prefix,1,1);
if (gNB->frame_parms.nb_antennas_tx>1)
LOG_M("txsigF1.m","txsF1", gNB->common_vars.txdataF[1],frame_length_complex_samples_no_prefix,1,1);*/
......@@ -657,7 +642,6 @@ gNB->dlsch[k][i]->Nsoft = 10;
}
}*/
for (i=0; i<2; i++) {
printf("gNB %d\n",i);
free_gNB_dlsch(gNB->dlsch[0][i]);
......@@ -686,7 +670,6 @@ gNB->dlsch[k][i]->Nsoft = 10;
fclose(input_fd);
return(n_errors);
}
......
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