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nr pbch format change

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This commit is contained in:
Hongzhi
2018-09-19 15:10:43 +02:00
parent ce0b626684
commit 52bdf7e077
3 changed files with 19 additions and 25 deletions
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openair1/PHY/CODING/nrPolar_tools/nr_polar_pbch_defs.h
+1
View File
@@ -51,6 +51,7 @@
//Sec. 7.1.5: Rate Matching
#define NR_POLAR_PBCH_I_BIL 0 //uint8_t
#define NR_POLAR_PBCH_E 864 //uint16_t
#define NR_POLAR_PBCH_E_DWORD 27 // NR_POLAR_PBCH_E/32
/*
* TEST CODE
openair1/PHY/NR_TRANSPORT/nr_pbch.c
+15 -22
View File
@@ -36,7 +36,7 @@
#include "PHY/sse_intrin.h"
//#define DEBUG_PBCH
//#define DEBUG_PBCH_ENCODING
#define DEBUG_PBCH_ENCODING
//#define DEBUG_PBCH_DMRS
extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
@@ -140,9 +140,9 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
{
uint8_t reset, offset;
uint32_t x1, x2, s=0;
uint8_t *pbch_e = pbch->pbch_e;
uint32_t *pbch_a_prime = (uint32_t*)pbch->pbch_a_prime;
uint32_t *pbch_a_interleaved = (uint32_t*)pbch->pbch_a_interleaved;
uint32_t *pbch_e = pbch->pbch_e;
uint32_t pbch_a_prime = pbch->pbch_a_prime;
uint32_t pbch_a_interleaved = pbch->pbch_a_interleaved;
uint32_t unscrambling_mask = 0x100006D;
reset = 1;
@@ -157,7 +157,7 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
// Scrambling is now done with offset (nushift*M)%32
offset = (nushift*M)&0x1f;
#ifdef DEBUG_PBCH_ENCODING
printf("Scrambling params: nushift %d M %d length %d bitwise %d offset %d\n", nushift, M, length, bitwise, offset);
printf("Scrambling params: nushift %d M %d length %d encoded %d offset %d\n", nushift, M, length, encoded, offset);
#endif
for (int i=0; i<length; i++) {
@@ -169,7 +169,7 @@ void nr_pbch_scrambling(NR_gNB_PBCH *pbch,
printf("s: %04x\t", s);
#endif
if (!encoded) {
(*pbch_a_prime) ^= ((unscrambling_mask>>i)&1)? (((*pbch_a_interleaved)>>i)&1)<<i : ((((*pbch_a_interleaved)>>i)&1) ^ ((s>>((i+offset)&0x1f))&1))<<i;
pbch_a_prime ^= ((unscrambling_mask>>i)&1)? ((pbch_a_interleaved>>i)&1)<<i : (((pbch_a_interleaved>>i)&1) ^ ((s>>((i+offset)&0x1f))&1))<<i;
}
else
@@ -246,11 +246,11 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
(*xbyte) ^= ((ssb_index>>(3+i))&1)<<(5+i); // resp. 4th, 5th and 6th bits of ssb_index
else
(*xbyte) ^= ((config->sch_config.ssb_subcarrier_offset.value>>5)&1)<<5; //MSB of k_SSB
#ifdef DEBUG_PBCH_ENCODING
//#ifdef DEBUG_PBCH_ENCODING
printf("Extra byte:\n");
for (int i=0; i<4; i++)
printf("pbch_a[%d]: 0x%02x\n", i, pbch->pbch_a[i]);
#endif
//#endif
// Payload interleaving
uint32_t in=0, out=0;
@@ -258,19 +258,18 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
in |= (uint32_t)(pbch->pbch_a[i]<<((3-i)<<3));
for (int i=0; i<32; i++) {
out |= ((in>>i)&1)<<(nr_pbch_payload_interleaver(i));//nr_pbch_payload_interleaving_pattern[i]
pbch->pbch_a_interleaved |= ((in>>i)&1)<<(nr_pbch_payload_interleaver(i));//nr_pbch_payload_interleaving_pattern[i]
#ifdef DEBUG_PBCH_ENCODING
printf("i %d in 0x%08x out 0x%08x ilv %d (in>>i)&1) %d\n", i, in, out, nr_pbch_payload_interleaver(i), (in>>i)&1);
#endif
}
for (int i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS>>3; i++)
pbch->pbch_a_interleaved[i] = (uint8_t)((out>>(i<<3))&0xff);
/*for (int i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS>>3; i++)
pbch->pbch_a_interleaved[i] = (uint8_t)((out>>(i<<3))&0xff);*/
#ifdef DEBUG_PBCH_ENCODING
printf("Interleaving:\n");
for (int i=0; i<4; i++)
printf("pbch_a_interleaved[%d]: 0x%02x\n", i, pbch->pbch_a_interleaved[i]);
printf("pbch_a_interleaved: 0x%08x\n", pbch->pbch_a_interleaved);
#endif
// Scrambling
@@ -279,20 +278,14 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
nr_pbch_scrambling(pbch, (uint32_t)config->sch_config.physical_cell_id.value, nushift, M, NR_POLAR_PBCH_PAYLOAD_BITS, 0);
#ifdef DEBUG_PBCH_ENCODING
printf("Payload scrambling:\n");
for (int i=0; i<4; i++)
printf("pbch_a_prime[%d]: 0x%02x\n", i, pbch->pbch_a_prime[i]);
printf("pbch_a_prime[%d]: 0x%08x\n", pbch->pbch_a_prime);
#endif
for (int m=0;m<32;m++){
pbch_a_b[m] = ((pbch->pbch_a_prime[m>>3]>>(m&7))&1);
//printf("pbch_a_b[%d] %d\n", m, pbch_a_b[m] );
}
/// CRC, coding and rate matching
polar_encoder (pbch->pbch_a_prime, pbch->pbch_e, polar_params);
#ifdef DEBUG_PBCH_ENCODING
printf("Channel coding:\n");
for (int i=0; i<(uint16_t)ceil((NR_POLAR_PBCH_E>>3)/32); i++)
for (int i=0; i<NR_POLAR_PBCH_E_DWORD; i++)
printf("pbch_e[%d]: 0x%08x\t", i, pbch->pbch_e[i]);
printf("\n");
#endif
@@ -303,7 +296,7 @@ pbch_a_b[m] = ((pbch->pbch_a_prime[m>>3]>>(m&7))&1);
nr_pbch_scrambling(pbch, (uint32_t)config->sch_config.physical_cell_id.value, nushift, M, NR_POLAR_PBCH_E, 1);
#ifdef DEBUG_PBCH_ENCODING
printf("Scrambling:\n");
for (int i=0; i<(uint16_t)ceil((NR_POLAR_PBCH_E>>3)/32); i++)
for (int i=0; i<NR_POLAR_PBCH_E_DWORD; i++)
printf("pbch_e[%d]: 0x%08x\t", i, pbch->pbch_e[i]);
printf("\n");
#endif
openair1/PHY/defs_gNB.h
+3 -3
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@@ -41,9 +41,9 @@
typedef struct {
uint8_t pbch_a[NR_POLAR_PBCH_PAYLOAD_BITS>>3];
uint8_t pbch_a_interleaved[NR_POLAR_PBCH_PAYLOAD_BITS>>3];
uint8_t pbch_a_prime[NR_POLAR_PBCH_PAYLOAD_BITS>>3];
uint8_t pbch_e[NR_POLAR_PBCH_E];
uint32_t pbch_a_interleaved;
uint32_t pbch_a_prime;
uint32_t pbch_e[NR_POLAR_PBCH_E_DWORD];
} NR_gNB_PBCH;
typedef struct {