maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ue add pbch demodulation

Browse Source
This commit is contained in:
hongzhi wang
2018-06-21 15:39:58 +02:00
parent 269e2182e4
commit 227216f023
2 changed files with 45 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/INIT/nr_init_ue.c
+4 -4
View File
@@ -842,17 +842,17 @@ int init_nr_ue_signal(PHY_VARS_NR_UE *ue,
pbch_vars[eNB_id]->rxdataF_ext = (int32_t**)malloc16( fp->nb_antennas_rx*sizeof(int32_t*) );
pbch_vars[eNB_id]->rxdataF_comp = (int32_t**)malloc16_clear( 8*sizeof(int32_t*) );
pbch_vars[eNB_id]->dl_ch_estimates_ext = (int32_t**)malloc16_clear( 8*sizeof(int32_t*) );
pbch_vars[eNB_id]->llr = (int8_t*)malloc16_clear( 1920 );
pbch_vars[eNB_id]->llr = (int8_t*)malloc16_clear( 1920 );//
prach_vars[eNB_id]->prachF = (int16_t*)malloc16_clear( sizeof(int)*(7*2*sizeof(int)*(fp->ofdm_symbol_size*12)) );
prach_vars[eNB_id]->prach = (int16_t*)malloc16_clear( sizeof(int)*(7*2*sizeof(int)*(fp->ofdm_symbol_size*12)) );
for (i=0; i<fp->nb_antennas_rx; i++) {
pbch_vars[eNB_id]->rxdataF_ext[i] = (int32_t*)malloc16_clear( sizeof(int32_t)*6*12*4 );
pbch_vars[eNB_id]->rxdataF_ext[i] = (int32_t*)malloc16_clear( sizeof(int32_t)*20*12*4 );
for (j=0; j<4; j++) {//fp->nb_antennas_tx;j++) {
int idx = (j<<1)+i;
pbch_vars[eNB_id]->rxdataF_comp[idx] = (int32_t*)malloc16_clear( sizeof(int32_t)*6*12*4 );
pbch_vars[eNB_id]->dl_ch_estimates_ext[idx] = (int32_t*)malloc16_clear( sizeof(int32_t)*6*12*4 );
pbch_vars[eNB_id]->rxdataF_comp[idx] = (int32_t*)malloc16_clear( sizeof(int32_t)*20*12*4 );
pbch_vars[eNB_id]->dl_ch_estimates_ext[idx] = (int32_t*)malloc16_clear( sizeof(int32_t)*20*12*4 );
}
}
}
openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c
+41 -14
View File
@@ -33,6 +33,7 @@
#include "PHY/CODING/coding_extern.h"
#include "PHY/phy_extern_nr_ue.h"
#include "PHY/sse_intrin.h"
#include "SIMULATION/TOOLS/sim.h"
//#define DEBUG_PBCH 1
//#define DEBUG_PBCH_ENCODING
@@ -246,7 +247,7 @@ void nr_pbch_channel_compensation(int **rxdataF_ext,
uint8_t output_shift)
{
uint16_t rb,nb_rb=15;
uint16_t rb,nb_rb=20;
uint8_t aatx,aarx;
#if defined(__x86_64__) || defined(__i386__)
__m128i *dl_ch128,*rxdataF128,*rxdataF_comp128;
@@ -466,6 +467,10 @@ void nr_pbch_quantize(int16_t *pbch_llr16,
}
}
unsigned short sign(short x) {
return (unsigned short)x >> 15;
}
uint16_t nr_rx_pbch( PHY_VARS_NR_UE *ue,
UE_nr_rxtx_proc_t *proc,
NR_UE_PBCH *nr_ue_pbch_vars,
@@ -482,14 +487,24 @@ uint16_t nr_rx_pbch( PHY_VARS_NR_UE *ue,
int max_h=0;
int symbol,i;
uint8_t pbch_a[8];
uint8_t pbch_a[64];
int16_t *pbch_e_rx;
uint8_t *decoded_output = nr_ue_pbch_vars->decoded_output;
uint16_t crc;
//short nr_demod_table[8] = {0,0,0,1,1,0,1,1};
double nr_demod_table[8] = {0.707,0.707,0.707,-0.707,-0.707,0.707,-0.707,-0.707};
double *demod_pbch_e = malloc (sizeof(double) * 864);
unsigned short idx_demod =0;
int8_t decoderState=0;
uint8_t decoderListSize = 8, pathMetricAppr = 0;
double aPrioriArray[frame_parms->pbch_polar_params.payloadBits]; // assume no a priori knowledge available about the payload.
double *channelOutput = malloc (sizeof(double) * 864); //add noise
uint8_t *estimatedOutput = malloc(sizeof(uint8_t) * 32); //decoder output
memset(&channelOutput[0], 0, sizeof(double) * 864);
memset(&estimatedOutput[0], 0, sizeof(uint8_t) * 32);
for (int i=0; i<frame_parms->pbch_polar_params.payloadBits; i++) aPrioriArray[i] = NAN;
int subframe_rx = proc->subframe_rx;
@@ -573,25 +588,37 @@ uint16_t nr_rx_pbch( PHY_VARS_NR_UE *ue,
printf("pbch rx llr %d rxdata_comp %d addr %p\n",*(pbch_e_rx+cnt), p[cnt], &p[0]);
//#endif
//polar decoding de-rate matching
decoderState = polar_decoder((double *)pbch_e_rx, pbch_a, &frame_parms->pbch_polar_params, decoderListSize, aPrioriArray, pathMetricAppr);
for (int i=0; i<NR_POLAR_PBCH_E/2; i++){
idx_demod = (sign(pbch_e_rx[i<<1])&1) ^ ((sign(pbch_e_rx[(i<<1)+1])&1)<<1);
demod_pbch_e[i<<1] = nr_demod_table[(idx_demod)<<1];
demod_pbch_e[(i<<1)+1] = nr_demod_table[((idx_demod)<<1)+1];
if (i<16){
printf("idx[%d]= %d\n", i , idx_demod);
printf("sign[%d]= %d sign[%d]= %d\n", i<<1 , sign(pbch_e_rx[i<<1]), (i<<1)+1 , sign(pbch_e_rx[(i<<1)+1]));
printf("demod_pbch_e2[%d] r = %2.3f i = %2.3f\n", i<<1 , demod_pbch_e[i<<1], demod_pbch_e[(i<<1)+1]);}
}
memset(pbch_a,0,((16+NR_POLAR_PBCH_PAYLOAD_BITS)>>3));
//polar decoding de-rate matching
decoderState = polar_decoder(demod_pbch_e, estimatedOutput, &frame_parms->pbch_polar_params, decoderListSize, aPrioriArray, pathMetricAppr);
//memset(pbch_a,0,((16+NR_POLAR_PBCH_PAYLOAD_BITS)>>3));
//un-scrambling
nr_pbch_unscrambling(frame_parms,
pbch_a,
NR_POLAR_PBCH_PAYLOAD_BITS);
// nr_pbch_unscrambling(frame_parms,
// pbch_a,
// NR_POLAR_PBCH_PAYLOAD_BITS);
// Fix byte endian
for (i=0; i<(NR_POLAR_PBCH_PAYLOAD_BITS>>3); i++)
decoded_output[(NR_POLAR_PBCH_PAYLOAD_BITS>>3)-i-1] = pbch_a[i];
for (i=0; i<32 /*(NR_POLAR_PBCH_PAYLOAD_BITS>>3)*/; i++)
printf("estimated output[%d] = %d \n", i,estimatedOutput[i]);
//decoded_output[(NR_POLAR_PBCH_PAYLOAD_BITS>>3)-i-1] = pbch_a[i];
#ifdef DEBUG_PBCH
//#ifdef DEBUG_PBCH
for (i=0; i<(NR_POLAR_PBCH_PAYLOAD_BITS>>3); i++)
msg("[PBCH] pbch_a[%d] = %x\n",i,decoded_output[i]);
// for (i=0; i<2; i++)
// printf("[PBCH] pbch_a[%d] = %x\n",i,decoded_output[i]);
#endif
//#endif
#ifdef DEBUG_PBCH
msg("PBCH CRC %x : %x\n",