From 49b7d7454be2ee8bbf0e14620e84ab49cdce21e2 Mon Sep 17 00:00:00 2001
From: Florian Kaltenberger <florian.kaltenberger@eurecom.fr>
Date: Fri, 11 Jan 2019 14:14:18 +0100
Subject: [PATCH] bit endianes reversal also at the pbch rx.
---
openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c | 25 ++++++++++++++++---------
1 file changed, 16 insertions(+), 9 deletions(-)
diff --git a/openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c b/openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c
index 3f2abd03ea7..3e5df2e2426 100644
--- a/openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c
+++ b/openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c
@@ -530,10 +530,10 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
int max_h=0;
- int symbol,i;
+ int symbol;
//uint8_t pbch_a[64];
uint8_t *pbch_a = malloc(sizeof(uint8_t) * 32);
- uint32_t pbch_a_prime;
+ //uint32_t pbch_a_prime;
int16_t *pbch_e_rx;
uint8_t *decoded_output = nr_ue_pbch_vars->decoded_output;
uint8_t nushift;
@@ -541,12 +541,12 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
uint8_t Lmax=8; //to update
uint8_t ssb_index=0;
//uint16_t crc;
- unsigned short idx_demod =0;
+ //unsigned short idx_demod =0;
uint32_t decoderState=0;
- uint8_t decoderListSize = 8, pathMetricAppr = 0;
+ //uint8_t decoderListSize = 8, pathMetricAppr = 0;
- time_stats_t polar_decoder_init,polar_rate_matching,decoding,bit_extraction,deinterleaving;
- time_stats_t path_metric,sorting,update_LLR;
+ //time_stats_t polar_decoder_init,polar_rate_matching,decoding,bit_extraction,deinterleaving;
+ //time_stats_t path_metric,sorting,update_LLR;
memset(&pbch_a[0], 0, sizeof(uint8_t) * NR_POLAR_PBCH_PAYLOAD_BITS);
//printf("nr_pbch_ue nid_cell %d\n",frame_parms->Nid_cell);
@@ -670,11 +670,18 @@ int nr_rx_pbch( PHY_VARS_NR_UE *ue,
t_nrPolar_params *currentPtr = nr_polar_params(nr_ue_pbch_vars->nrPolar_params, NR_POLAR_PBCH_MESSAGE_TYPE, NR_POLAR_PBCH_PAYLOAD_BITS, NR_POLAR_PBCH_AGGREGATION_LEVEL);
- decoderState = polar_decoder_int16(pbch_e_rx,(uint8_t*)&nr_ue_pbch_vars->pbch_a_prime,currentPtr);
-
- if(decoderState) return(decoderState);
+ decoderState = polar_decoder_int16(pbch_e_rx,(uint64_t*)&nr_ue_pbch_vars->pbch_a_prime,currentPtr);
+
+ if(decoderState) return(decoderState);
// printf("polar decoder output 0x%08x\n",nr_ue_pbch_vars->pbch_a_prime);
+
+ // Decoder reversal
+ uint32_t a_reversed=0;
+ for (int i=0; i<NR_POLAR_PBCH_PAYLOAD_BITS; i++)
+ a_reversed |= (((uint64_t)nr_ue_pbch_vars->pbch_a_prime>>i)&1)<<(31-i);
+
+ nr_ue_pbch_vars->pbch_a_prime = a_reversed;
//payload un-scrambling
memset(&nr_ue_pbch_vars->pbch_a_interleaved, 0, sizeof(uint32_t) );
--
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