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This commit is contained in:
Sakthi
2020-08-10 19:14:14 +02:00
parent e2afb8662e
commit 5e7ce26c10
4 changed files with 31 additions and 17 deletions
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openair1/PHY/MODULATION/nr_modulation.c
+1 -3
View File
@@ -22,8 +22,6 @@
#include "nr_modulation.h"
#include "PHY/NR_REFSIG/nr_mod_table.h"
extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
void nr_modulation(uint32_t *in,
uint32_t length,
uint16_t mod_order,
@@ -114,7 +112,7 @@ void nr_modulation(uint32_t *in,
return;
case 8:
nr_mod_table32 = (int32_t*) nr_mod_table;
nr_mod_table32 = (int32_t*) nr_256qam_mod_table;
for (i=0; i<length/8; i++)
out32[i] = nr_mod_table32[(offset+in_bytes[i])];
return;
openair1/PHY/NR_REFSIG/nr_gen_mod_table.c
+21 -8
View File
@@ -32,15 +32,9 @@ void nr_generate_modulation_table() {
uint32_t i,j;
short* table;
//QPSK m128
for (i=0; i<256; i++) {
for (j=0; j<4; j++) {
nr_qpsk_byte_mod_table[i*8+(j*2)] = (short)(1-2*((i>>(j*2))&1))*val*sqrt2*sqrt2;
nr_qpsk_byte_mod_table[i*8+(j*2)+1] = (short)(1-2*((i>>(j*2+1))&1))*val*sqrt2*sqrt2;
//printf("%d j%d\n",nr_qpsk_byte_mod_table[i*8+(j*2)],nr_qpsk_byte_mod_table[i*8+(j*2)+1]);
}
}
short nr_qpsk_mod_table[8] = {16384,16384,-16384,16384,16384,-16384,-16384,-16384};
#if defined(__AVX2__)
//QPSK m256
table = (short*) nr_qpsk_2byte_mod_table;
for (i=0; i<65536; i++) {
@@ -50,6 +44,18 @@ void nr_generate_modulation_table() {
//printf("%d j%d\n",nr_qpsk_byte_mod_table[i*8+(j*2)],nr_qpsk_byte_mod_table[i*8+(j*2)+1]);
}
}
#elif defined(__SSE2__)
//QPSK m128
table = (short*) nr_qpsk_byte_mod_table;
for (i=0; i<256; i++) {
for (j=0; j<4; j++) {
table[i*8+(j*2)] = (short)(1-2*((i>>(j*2))&1))*val*sqrt2*sqrt2;
table[i*8+(j*2)+1] = (short)(1-2*((i>>(j*2+1))&1))*val*sqrt2*sqrt2;
//printf("%d j%d\n",nr_qpsk_byte_mod_table[i*8+(j*2)],nr_qpsk_byte_mod_table[i*8+(j*2)+1]);
}
}
#endif
//16QAM
for (i=0; i<256; i++) {
@@ -69,5 +75,12 @@ void nr_generate_modulation_table() {
//printf("%d j%d\n",table[i*4+(j*2)],table[i*4+(j*2)+1]);
}
}
//256QAM
table = (short*) nr_256qam_mod_table;
for (i=0; i<256; i++) {
table[i*2] = (short)((1-2*(i&1))*(8-(1-2*((i>>2)&1))*(4-(1-2*((i>>4)&1))*(2-(1-2*((i>>6)&1))))))*val*sqrt170*sqrt2;
table[i*2+1] = (short)((1-2*((i>>1)&1))*(8-(1-2*((i>>3)&1))*(4-(1-2*((i>>5)&1))*(2-(1-2*((i>>7)&1))))))*val*sqrt170*sqrt2;
}
}
openair1/PHY/NR_REFSIG/nr_mod_table.h
+4 -1
View File
@@ -28,7 +28,8 @@
#define NR_MOD_TABLE_QAM16_OFFSET 7
#define NR_MOD_TABLE_QAM64_OFFSET 23
#define NR_MOD_TABLE_QAM256_OFFSET 87
short nr_qpsk_mod_table[8] = {16384,16384,-16384,16384,16384,-16384,-16384,-16384};
short nr_qpsk_mod_table[8];
#if defined(__AVX2__)
__m256i nr_qpsk_2byte_mod_table[65536];
@@ -39,4 +40,6 @@ __m128i nr_qpsk_byte_mod_table[2048];
int64_t nr_16qam_byte_mod_table[1024];
int64_t nr_64qam_mod_table[4096];
int32_t nr_256qam_mod_table[512];
#endif
openair1/PHY/NR_TRANSPORT/nr_pbch.c
+5 -5
View File
@@ -40,7 +40,7 @@
//#define DEBUG_PBCH_ENCODING
//#define DEBUG_PBCH_DMRS
extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
extern short nr_qpsk_mod_table[8];
uint8_t nr_pbch_payload_interleaving_pattern[32] = {16, 23, 18, 17, 8, 30, 10, 6, 24, 7, 0, 5, 3, 2, 1, 4,
9, 11, 12, 13, 14, 15, 19, 20, 21, 22, 25, 26, 27, 28, 29, 31
@@ -62,8 +62,8 @@ int nr_generate_pbch_dmrs(uint32_t *gold_pbch_dmrs,
/// QPSK modulation
for (int m=0; m<NR_PBCH_DMRS_LENGTH; m++) {
idx = ((((gold_pbch_dmrs[(m<<1)>>5])>>((m<<1)&0x1f))&1)<<1) ^ (((gold_pbch_dmrs[((m<<1)+1)>>5])>>(((m<<1)+1)&0x1f))&1);
mod_dmrs[m<<1] = nr_mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
mod_dmrs[(m<<1)+1] = nr_mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
mod_dmrs[m<<1] = nr_qpsk_mod_table[idx<<1];
mod_dmrs[(m<<1)+1] = nr_qpsk_mod_table[(idx<<1) + 1];
#ifdef DEBUG_PBCH_DMRS
printf("m %d idx %d gold seq %d b0-b1 %d-%d mod_dmrs %d %d\n", m, idx, gold_pbch_dmrs[(m<<1)>>5], (((gold_pbch_dmrs[(m<<1)>>5])>>((m<<1)&0x1f))&1),
(((gold_pbch_dmrs[((m<<1)+1)>>5])>>(((m<<1)+1)&0x1f))&1), mod_dmrs[(m<<1)], mod_dmrs[(m<<1)+1]);
@@ -324,8 +324,8 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
/// QPSK modulation
for (int i=0; i<NR_POLAR_PBCH_E>>1; i++) {
idx = (((pbch->pbch_e[(i<<1)>>5]>>((i<<1)&0x1f))&1)<<1) ^ ((pbch->pbch_e[((i<<1)+1)>>5]>>(((i<<1)+1)&0x1f))&1);
mod_pbch_e[i<<1] = nr_mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
mod_pbch_e[(i<<1)+1] = nr_mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1)+1];
mod_pbch_e[i<<1] = nr_qpsk_mod_table[idx<<1];
mod_pbch_e[(i<<1)+1] = nr_qpsk_mod_table[(idx<<1)+1];
#ifdef DEBUG_PBCH
printf("i %d idx %d mod_pbch %d %d\n", i, idx, mod_pbch_e[2*i], mod_pbch_e[2*i+1]);
#endif