maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fixing segmentation fault in llr computation

Browse Source 
- This was due to alignment problem in rxdataF_ext when odd number of RBs were assigned
This commit is contained in:
Ahmed Hussein
2019-06-04 13:43:20 +02:00
committed by Thomas Schlichter
parent c7a0c41191
commit 77ed36a7b8
3 changed files with 10 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c
+6 -6
View File
@@ -240,12 +240,12 @@ void nr_ulsch_extract_rbs_single(int **rxdataF,
for (aarx = 0; aarx < frame_parms->nb_antennas_rx; aarx++) {
rxF = (int16_t *)&rxdataF[aarx][symbol * frame_parms->ofdm_symbol_size];
rxF_ext = (int16_t *)&rxdataF_ext[aarx][rxdataF_ext_offset];
rxF_ext = (int16_t *)&rxdataF_ext[aarx][symbol * nb_re_pusch]; // [hna] rxdataF_ext isn't contiguous in order to solve an alignment problem ib llr computation in case of mod_order = 4, 6
for (re = 0; re < nb_re_pusch; re++) {
if ( (is_dmrs_symbol && ((re&1) != frame_parms->nushift)) || (is_dmrs_symbol == 0) ) { // [hna] (re&1) != frame_parms->nushift) assuming only dmrs type 1 and mapping type A
if ( (is_dmrs_symbol && ((re&1) != 0)) || (is_dmrs_symbol == 0) ) { // [hna] (re&1) != frame_parms->nushift) assuming only dmrs type 1 and mapping type A
// frame_parms->nushift should be initialized with 0
rxF_ext[rxF_ext_index] = (rxF[ ((start_re + re)*2) % (frame_parms->ofdm_symbol_size*2)]);
rxF_ext[rxF_ext_index + 1] = (rxF[(((start_re + re)*2) + 1) % (frame_parms->ofdm_symbol_size*2)]);
rxF_ext_index = rxF_ext_index + 2;
@@ -290,21 +290,21 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
frame_parms);
#ifdef NR_SC_FDMA
nr_idft(&((uint32_t*)gNB->pusch_vars[UE_id]->rxdataF_ext[0])[gNB->pusch_vars[UE_id]->rxdataF_ext_offset], nb_re_pusch);
nr_idft(&((uint32_t*)gNB->pusch_vars[UE_id]->rxdataF_ext[0])[symbol * rel15_ul->number_rbs * NR_NB_SC_PER_RB], nb_re_pusch);
#endif
//----------------------------------------------------------
//-------------------- LLRs computation --------------------
//----------------------------------------------------------
nr_ulsch_compute_llr(&gNB->pusch_vars[UE_id]->rxdataF_ext[0][gNB->pusch_vars[UE_id]->rxdataF_ext_offset],
nr_ulsch_compute_llr(&gNB->pusch_vars[UE_id]->rxdataF_ext[0][symbol * rel15_ul->number_rbs * NR_NB_SC_PER_RB],
gNB->pusch_vars[UE_id]->ul_ch_mag,
gNB->pusch_vars[UE_id]->ul_ch_magb,
&gNB->pusch_vars[UE_id]->llr[gNB->pusch_vars[UE_id]->rxdataF_ext_offset * rel15_ul->Qm],
nb_re_pusch,
symbol,
rel15_ul->Qm);
gNB->pusch_vars[UE_id]->rxdataF_ext_offset = gNB->pusch_vars[UE_id]->rxdataF_ext_offset + nb_re_pusch;
}
openair1/PHY/NR_TRANSPORT/nr_ulsch_llr_computation.c
+3 -3
View File
@@ -35,9 +35,9 @@
#include "PHY/sse_intrin.h"
#include "PHY/impl_defs_top.h"
__m128i xmm0 __attribute__ ((aligned(16)));
__m128i xmm1 __attribute__ ((aligned(16)));
__m128i xmm2 __attribute__ ((aligned(16)));
__m128i xmm0 __attribute__ ((aligned(32)));
__m128i xmm1 __attribute__ ((aligned(32)));
__m128i xmm2 __attribute__ ((aligned(32)));
//----------------------------------------------------------------------------------------------
openair1/PHY/NR_UE_TRANSPORT/nr_transport_ue.h
+1 -1
View File
@@ -202,7 +202,7 @@ typedef struct {
/// Scrambled "b"-sequences (for definition see 36-211 V8.6 2009-03, p.14)
uint8_t b_tilde[MAX_NUM_NR_CHANNEL_BITS];
/// Modulated "d"-sequences (for definition see 36-211 V8.6 2009-03, p.14)
uint32_t d_mod[MAX_NUM_NR_RE] __attribute__ ((aligned(16)));
uint32_t d_mod[MAX_NUM_NR_RE];
/// Transform-coded "y"-sequences (for definition see 38-211 V15.3.0 2018-09, subsection 6.3.1.4)
uint32_t y[MAX_NUM_NR_RE] __attribute__ ((aligned(16)));
/*