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Bit reversal.

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Working PBCH version
This commit is contained in:
Guy De Souza
2018-12-07 21:06:16 +01:00
committed by Florian Kaltenberger
parent 826b7304e6
commit 173801704e
1 changed files with 9 additions and 1 deletions
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openair1/PHY/NR_TRANSPORT/nr_pbch.c
+9 -1
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@@ -226,6 +226,7 @@ void nr_init_pbch_interleaver(uint8_t *interleaver) {
*(interleaver+i) = *(nr_pbch_payload_interleaving_pattern+j_hrf); *(interleaver+i) = *(nr_pbch_payload_interleaving_pattern+j_hrf);
else // Ssb bits:3 else // Ssb bits:3
*(interleaver+i) = *(nr_pbch_payload_interleaving_pattern+j_ssb++); *(interleaver+i) = *(nr_pbch_payload_interleaving_pattern+j_ssb++);
} }
int nr_generate_pbch(NR_gNB_PBCH *pbch, int nr_generate_pbch(NR_gNB_PBCH *pbch,
@@ -250,6 +251,7 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
uint16_t M; uint16_t M;
uint8_t nushift; uint8_t nushift;
uint32_t unscrambling_mask; uint32_t unscrambling_mask;
uint64_t a_reversed=0;
LOG_I(PHY, "PBCH generation started\n"); LOG_I(PHY, "PBCH generation started\n");
@@ -304,8 +306,14 @@ int nr_generate_pbch(NR_gNB_PBCH *pbch,
printf("pbch_a_prime: 0x%08x\n", pbch->pbch_a_prime); printf("pbch_a_prime: 0x%08x\n", pbch->pbch_a_prime);
#endif #endif
// Encoder reversal
for (int i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS; i++)
a_reversed |= (((uint64_t)pbch->pbch_a_prime>>i)&1)<<(31-i);
/// CRC, coding and rate matching /// CRC, coding and rate matching
polar_encoder_fast ((uint64_t*)&pbch->pbch_a_prime, (uint32_t*)pbch->pbch_e, 0, polar_params); polar_encoder_fast (&a_reversed, (uint32_t*)pbch->pbch_e, 0, polar_params);
#ifdef DEBUG_PBCH_ENCODING #ifdef DEBUG_PBCH_ENCODING
printf("Channel coding:\n"); printf("Channel coding:\n");
for (int i=0; i<NR_POLAR_PBCH_E_DWORD; i++) for (int i=0; i<NR_POLAR_PBCH_E_DWORD; i++)