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ue changing pbch dmrs modulation

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This commit is contained in:
hongzhi wang
2018-07-04 17:01:41 +02:00
parent eba95e3f03
commit f68d124dcc
3 changed files with 16 additions and 11 deletions
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openair1/PHY/NR_REFSIG/nr_dmrs_rx.c
+12 -7
View File
@@ -41,6 +41,7 @@
#include "refsig_defs_ue.h"
#include "PHY/defs_nr_UE.h"
#include "nr_mod_table.h"
#include "log.h"
/*Table 7.4.1.1.2-1/2 from 38.211 */
@@ -50,7 +51,7 @@ int wf2[12][2] = {{1,1},{1,-1},{1,1},{1,-1},{1,1},{1,-1},{1,1},{1,1},{1,1},{1,-1
int wt2[12][2] = {{1,1},{1,1},{1,1},{1,1},{1,1},{1,1},{1,-1},{1,-1},{1,-1},{1,-1},{1,-1},{1,-1}};
//short nr_mod_table[14] = {0,0,-23170,-23170,23170,23170,-23170,-23170,-23170,23170,23170,-23170,23170,23170};
short nr_mod_table[14] = {0,0,23170,-23170,-23170,23170,23170,-23170,23170,23170,-23170,-23170,-23170,23170};
short nr_rx_mod_table[NR_MOD_TABLE_SIZE_SHORT] = {0,0,23170,-23170,-23170,23170,23170,-23170,23170,23170,-23170,-23170,-23170,23170};
//short nr_mod_table[14] = {0,0,23170,23170,-23170,-23170,23170,23170,23170,-23170,-23170,23170,-23170,-23170};
//extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
@@ -143,16 +144,20 @@ int nr_pdsch_dmrs_rx(PHY_VARS_NR_UE *ue,
int nr_pbch_dmrs_rx(unsigned int *nr_gold_pbch,
int32_t *output )
{
int m;
int m;
uint8_t idx=0;
/// QPSK modulation
for (m=0; m<NR_PBCH_DMRS_LENGTH>>1; m++) {
idx = ((((nr_gold_pbch[(m<<1)>>5])>>((m<<1)&0x1f))&1)<<1) ^ (((nr_gold_pbch[((m<<1)+1)>>5])>>(((m<<1)+1)&0x1f))&1);
((int16_t*)output)[m<<1] = nr_rx_mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
((int16_t*)output)[(m<<1)+1] = nr_rx_mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
/// BPSK modulation
for (m=0; m<NR_PBCH_DMRS_LENGTH; m++) {
((int16_t*)output)[m<<1] = nr_mod_table[((1 + ((nr_gold_pbch[m>>5]&(1<<(m&0x1f)))>>(m&0x1f)))<<1)];
((int16_t*)output)[(m<<1)+1] = nr_mod_table[((1 + ((nr_gold_pbch[m>>5]&(1<<(m&0x1f)))>>(m&0x1f)))<<1) + 1];
#ifdef DEBUG_PBCH
//printf("nr_gold_pbch[m>>5] %x\n",nr_gold_pbch[m>>5]);
if (m<16)
{printf("nr_gold_pbch[(m<<1)>>5] %x\n",nr_gold_pbch[(m<<1)>>5]);
printf("m %d output %d %d addr %p\n", m, ((int16_t*)output)[m<<1], ((int16_t*)output)[(m<<1)+1],&output[0]);
}
#endif
}
openair1/PHY/NR_REFSIG/nr_mod_table.h
+1 -1
View File
@@ -1,4 +1,4 @@
#define NR_MOD_TABLE_SIZE_SHORT 14
#define NR_MOD_TABLE_BPSK_OFFSET 1
#define NR_MOD_TABLE_QPSK_OFFSET 3
short nr_mod_table[MOD_TABLE_SIZE_SHORT] = {0,0,23170,23170,-23170,-23170,23170,23170,23170,-23170,-23170,23170,-23170,-23170};
short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT] = {0,0,23170,23170,-23170,-23170,23170,23170,23170,-23170,-23170,23170,-23170,-23170};
openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c
+3 -3
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@@ -496,7 +496,7 @@ uint16_t nr_rx_pbch( PHY_VARS_NR_UE *ue,
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 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;
@@ -607,8 +607,8 @@ uint16_t nr_rx_pbch( PHY_VARS_NR_UE *ue,
//polar decoding de-rate matching
decoderState = polar_decoder(demod_pbch_e, pbch_a, &frame_parms->pbch_polar_params, decoderListSize, aPrioriArray, pathMetricAppr);
//for (i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS; i++)
// printf("pbch_a[%d] = %u \n", i,pbch_a[i]);
for (i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS; i++)
printf("pbch_a[%d] = %u \n", i,pbch_a[i]);
//un-scrambling
nr_pbch_unscrambling(frame_parms,pbch_a,NR_POLAR_PBCH_PAYLOAD_BITS);