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Interleaving update

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This commit is contained in:
Guy De Souza
2018-07-11 15:39:49 +02:00
parent b5e227befd
commit aeb298d012
1 changed files with 18 additions and 12 deletions
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openair1/PHY/NR_TRANSPORT/nr_pbch.c
+18 -12
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@@ -183,7 +183,7 @@ uint8_t nr_pbch_payload_interleaving_pattern[32] = {16, 23, 18, 17, 8, 30, 10, 6
uint8_t nr_pbch_payload_interleaver(uint8_t i) {
uint8_t j_sfn=0, j_hrf=10, j_ssb=11, j_other=14;
if (24<=i && i<=27) //Sfn bits
if (18<=i && i<=27) //Sfn bits
return nr_pbch_payload_interleaving_pattern[j_sfn + i -24];
else if (i==28) // Hrf bit
return nr_pbch_payload_interleaving_pattern[j_hrf];
@@ -206,7 +206,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
NR_DL_FRAME_PARMS *frame_parms)
{
int k,l,m;
int j,k,l,m;
int16_t a;
int16_t mod_pbch_e[NR_POLAR_PBCH_E];
uint8_t idx=0;
@@ -225,7 +225,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
#ifdef DEBUG_PBCH_ENCODING
printf("Byte endian fix:\n");
for (int i=0; i<4; i++)
printf("pbch_a[%d]: 0x%04x\n", i, pbch->pbch_a[i]);
printf("pbch_a[%d]: 0x%02x\n", i, pbch->pbch_a[i]);
#endif
// Extra byte generation
@@ -242,18 +242,24 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
#ifdef DEBUG_PBCH_ENCODING
printf("Extra byte:\n");
for (int i=0; i<4; i++)
printf("pbch_a[%d]: 0x%04x\n", i, pbch->pbch_a[i]);
printf("pbch_a[%d]: 0x%02x\n", i, pbch->pbch_a[i]);
#endif
// Payload interleaving
uint32_t* input = (uint32_t*)pbch->pbch_a;
uint32_t* output = (uint32_t*)pbch->pbch_a_interleaved;
for (int i=0; i<32; i++)
(*output) |= (((*input)>>i)&1)<<(nr_pbch_payload_interleaver(i));
uint8_t *in = &pbch->pbch_a[3];
uint8_t *out = &pbch->pbch_a_interleaved[3];
for (int i=0; i<32; i++) {
j = i&7;
if (!j) {
in--;
out--;
}
(*out) |= (((*in)>>j)&1)<<((nr_pbch_payload_interleaver(i))&7);
}
#ifdef DEBUG_PBCH_ENCODING
printf("Interleaving:\n");
for (int i=0; i<4; i++)
printf("pbch_a_interleaved[%d]: 0x%04x\n", i, pbch->pbch_a_interleaved[i]);
printf("pbch_a_interleaved[%d]: 0x%02x\n", i, pbch->pbch_a_interleaved[i]);
#endif
// Scrambling
@@ -263,7 +269,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
#ifdef DEBUG_PBCH_ENCODING
printf("Payload scrambling:\n");
for (int i=0; i<4; i++)
printf("pbch_a_prime[%d]: 0x%04x\n", i, pbch->pbch_a_prime[i]);
printf("pbch_a_prime[%d]: 0x%02x\n", i, pbch->pbch_a_prime[i]);
#endif
@@ -272,7 +278,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
#ifdef DEBUG_PBCH_ENCODING
printf("Channel coding:\n");
for (int i=0; i<NR_POLAR_PBCH_E>>3; i++)
printf("pbch_e[%d]: 0x%04x\t", i, pbch->pbch_e[i]);
printf("pbch_e[%d]: 0x%02x\t", i, pbch->pbch_e[i]);
printf("\n");
#endif
@@ -283,7 +289,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
#ifdef DEBUG_PBCH_ENCODING
printf("Scrambling:\n");
for (int i=0; i<NR_POLAR_PBCH_E>>3; i++)
printf("pbch_e[%d]: 0x%04x\t", i, pbch->pbch_e[i]);
printf("pbch_e[%d]: 0x%02x\t", i, pbch->pbch_e[i]);
printf("\n");
#endif