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updated ldpctest

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This commit is contained in:
Sakthivel Velumani
2022-01-21 17:34:34 +05:30
parent a8a5897a98
commit aa4db6057b
2 changed files with 50 additions and 25 deletions
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openair1/PHY/CODING/TESTBENCH/ldpctest.c
+43 -22
View File
@@ -30,6 +30,7 @@
#include "openair1/PHY/CODING/nrLDPC_decoder_LYC/nrLDPC_decoder_LYC.h"
#include "openair1/PHY/defs_nr_common.h"
#include "coding_unitary_defs.h"
#include "common/utils/LOG/log.h"
#define MAX_BLOCK_LENGTH 8448
@@ -78,9 +79,12 @@ char quantize8bit(double D,double x)
}
typedef struct {
double n_iter_mean;
double n_iter_std;
int n_iter_max;
double n_iter_mean[100];
double n_iter_std[100];
int n_iter_max[100];
double snr[100];
double ber[100];
double bler[100];
} n_iter_stats_t;
nrLDPC_encoderfunc_t encoder_orig;
@@ -101,8 +105,8 @@ int test_ldpc(short No_iteration,
unsigned int *crc_misses,
time_stats_t *time_optim,
time_stats_t *time_decoder,
n_iter_stats_t *dec_iter
)
n_iter_stats_t *dec_iter,
int nsnr)
{
//clock initiate
//time_stats_t time,time_optim,tinput,tprep,tparity,toutput, time_decoder;
@@ -280,6 +284,15 @@ int test_ldpc(short No_iteration,
// printf("puncture:%d\n",no_punctured_columns);
removed_bit=(nrows-no_punctured_columns-2) * Zc+block_length-(int)(block_length/((float)nom_rate/(float)denom_rate));
encoder_implemparams_t impp=INIT0_LDPCIMPLEMPARAMS;
// CRC attachement
for (j=0; j<n_segments; j++) {
int crc = 0;
crc = crc24b(test_input[j],block_length-24)>>8;
test_input[j][(block_length-24)>>3] = ((uint8_t*)&crc)[2];
test_input[j][1+((block_length-24)>>3)] = ((uint8_t*)&crc)[1];
test_input[j][2+((block_length-24)>>3)] = ((uint8_t*)&crc)[0];
}
impp.gen_code=1;
if (ntrials==0)
@@ -402,7 +415,7 @@ int test_ldpc(short No_iteration,
//count errors
for(j=0;j<n_segments;j++) {
for (i=0; i<block_length>>3; i++)
for (i=0; i<(block_length-24)>>3; i++)
{
//printf("block_length>>3: %d \n",block_length>>3);
/// printf("i: %d \n",i);
@@ -416,7 +429,7 @@ int test_ldpc(short No_iteration,
}
}
for (i=0; i<block_length; i++)
for (i=0; i<block_length-24; i++)
{
estimated_output_bit[j][i] = (estimated_output[j][i/8]&(1<<(i&7)))>>(i&7);
test_input_bit[i] = (test_input[j][i/8]&(1<<(i&7)))>>(i&7); // Further correct for multiple segments
@@ -446,9 +459,9 @@ int test_ldpc(short No_iteration,
}
dec_iter->n_iter_mean = n_iter_mean/(double)ntrials/(double)n_segments - 1;
dec_iter->n_iter_std = sqrt(n_iter_std/(double)ntrials/(double)n_segments - pow(n_iter_mean/(double)ntrials/(double)n_segments - 1,2));
dec_iter->n_iter_max = n_iter_max -1;
dec_iter->n_iter_mean[nsnr] = n_iter_mean/(double)ntrials/(double)n_segments - 1;
dec_iter->n_iter_std[nsnr] = sqrt(n_iter_std/(double)ntrials/(double)n_segments - pow(n_iter_mean/(double)ntrials/(double)n_segments - 1,2));
dec_iter->n_iter_max[nsnr] = n_iter_max -1;
*errors_bit_uncoded = *errors_bit_uncoded / (double)((Kb+nrows-no_punctured_columns-2) * Zc-removed_bit);
@@ -515,7 +528,7 @@ int main(int argc, char *argv[])
int test_uncoded= 0;
time_stats_t time_optim[10], time_decoder[10];
n_iter_stats_t dec_iter[3];
n_iter_stats_t dec_iter;
short BG=0,Zc,Kb=0;
if ( load_configmodule(argc,argv,CONFIG_ENABLECMDLINEONLY) == 0) {
@@ -682,14 +695,18 @@ int main(int argc, char *argv[])
&crc_misses,
time_optim,
time_decoder,
dec_iter);
&dec_iter,
i);
printf("SNR %f, BLER %f (%u/%d)\n", SNR, (float)decoded_errors[i]/(float)n_trials, decoded_errors[i], n_trials);
printf("SNR %f, BER %f (%u/%d)\n", SNR, (float)errors_bit/(float)n_trials/(float)block_length/(double)n_segments, decoded_errors[i], n_trials);
dec_iter.snr[i] = SNR;
dec_iter.ber[i] = (float)errors_bit/(float)n_trials/(float)block_length/(double)n_segments;
dec_iter.bler[i] = (float)decoded_errors[i]/(float)n_trials;
printf("SNR %f, BLER %f (%u/%d)\n", SNR, dec_iter.bler[i], decoded_errors[i], n_trials);
printf("SNR %f, BER %f (%u/%d)\n", SNR, dec_iter.ber[i], decoded_errors[i], n_trials);
printf("SNR %f, Uncoded BER %f (%u/%d)\n",SNR, errors_bit_uncoded/(float)n_trials/(double)n_segments, decoded_errors[i], n_trials);
printf("SNR %f, Mean iterations: %f\n",SNR, dec_iter->n_iter_mean);
printf("SNR %f, Std iterations: %f\n",SNR, dec_iter->n_iter_std);
printf("SNR %f, Max iterations: %d\n",SNR, dec_iter->n_iter_max);
printf("SNR %f, Mean iterations: %f\n",SNR, dec_iter.n_iter_mean[i]);
printf("SNR %f, Std iterations: %f\n",SNR, dec_iter.n_iter_std[i]);
printf("SNR %f, Max iterations: %d\n",SNR, dec_iter.n_iter_max[i]);
printf("\n");
printf("Encoding time mean: %15.3f us\n",(double)time_optim->diff/time_optim->trials/1000.0/get_cpu_freq_GHz());
printf("Encoding time std: %15.3f us\n",sqrt((double)time_optim->diff_square/time_optim->trials/pow(1000,2)/pow(get_cpu_freq_GHz(),2)-pow((double)time_optim->diff/time_optim->trials/1000.0/get_cpu_freq_GHz(),2)));
@@ -710,16 +727,20 @@ int main(int argc, char *argv[])
(double)time_decoder->diff/time_decoder->trials/1000.0/get_cpu_freq_GHz(),
sqrt((double)time_decoder->diff_square/time_decoder->trials/pow(1000,2)/pow(get_cpu_freq_GHz(),2)-pow((double)time_decoder->diff/time_decoder->trials/1000.0/get_cpu_freq_GHz(),2)),
(double)time_decoder->max/1000.0/get_cpu_freq_GHz(),
dec_iter->n_iter_mean,
dec_iter->n_iter_std,
dec_iter->n_iter_max
dec_iter.n_iter_mean[i],
dec_iter.n_iter_std[i],
dec_iter.n_iter_max[i]
);
if (decoded_errors[i] == 0) break;
i=i+1;
if (decoded_errors[i-1] == 0) break;
}
fclose(fd);
LOG_M("ldpctestStats.m","SNR",&dec_iter.snr[0],i,1,7);
LOG_MM("ldpctestStats.m","BLER",&dec_iter.bler[0],i,1,7);
LOG_MM("ldpctestStats.m","BER",&dec_iter.ber[0],i,1,7);
LOG_MM("ldpctestStats.m","meanIter",&dec_iter.n_iter_mean[0],i,1,7);
return(0);
}
openair1/PHY/NR_TRANSPORT/nr_ulsch_decoding.c
+7 -3
View File
@@ -105,7 +105,7 @@ NR_gNB_ULSCH_t *new_gNB_ulsch(uint8_t max_ldpc_iterations,uint16_t N_RB_UL, uint
{
NR_gNB_ULSCH_t *ulsch;
uint8_t i,r;
uint8_t exit_flag = 0,i,r;
uint16_t a_segments = MAX_NUM_NR_ULSCH_SEGMENTS; //number of segments to be allocated
if (N_RB_UL != 273) {
@@ -167,9 +167,13 @@ NR_gNB_ULSCH_t *new_gNB_ulsch(uint8_t max_ldpc_iterations,uint16_t N_RB_UL, uint
exit_flag=1;
}
}
if (exit_flag==0)
return(ulsch);
}
return(ulsch);
printf("new_gNB_ulsch with size %zu: exit_flag = %hhu\n",sizeof(NR_UL_gNB_HARQ_t), exit_flag);
free_gNB_ulsch(&ulsch,N_RB_UL);
return(NULL);
}
void clean_gNB_ulsch(NR_gNB_ULSCH_t *ulsch)