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Solved PHICH Segmentation fault for MIMO

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master
Xavier Arteaga 7 years ago committed by Ismael Gomez
parent 6556941e6d
commit c0fac73a84
5 changed files with 21 additions and 50 deletions
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14
lib/include/srslte/phy/phch/phich.h
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@ -101,8 +101,8 @@ SRSLTE_API void srslte_phich_calc(srslte_phich_t *q,
uint32_t *nseq);
SRSLTE_API int srslte_phich_decode(srslte_phich_t *q,
cf_t *slot_symbols,
cf_t *ce[SRSLTE_MAX_PORTS],
cf_t *slot_symbols[SRSLTE_MAX_PORTS],
cf_t *ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
float noise_estimate,
uint32_t ngroup,
uint32_t nseq,
@ -110,16 +110,6 @@ SRSLTE_API int srslte_phich_decode(srslte_phich_t *q,
uint8_t *ack,
float *distance);
SRSLTE_API int srslte_phich_decode_multi(srslte_phich_t *q,
cf_t *slot_symbols[SRSLTE_MAX_PORTS],
cf_t *ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
float noise_estimate,
uint32_t ngroup,
uint32_t nseq,
uint32_t nsubframe,
uint8_t *ack,
float *distance);
SRSLTE_API int srslte_phich_encode(srslte_phich_t *q,
uint8_t ack,
uint32_t ngroup,

23
lib/src/phy/phch/phich.c
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@ -173,26 +173,9 @@ void srslte_phich_ack_encode(uint8_t ack, uint8_t bits[SRSLTE_PHICH_NBITS]) {
memset(bits, ack, 3 * sizeof(uint8_t));
}
int srslte_phich_decode(srslte_phich_t *q, cf_t *sf_symbols, cf_t *ce[SRSLTE_MAX_PORTS], float noise_estimate,
uint32_t ngroup, uint32_t nseq, uint32_t subframe, uint8_t *ack, float *distance)
{
cf_t *_sf_symbols[SRSLTE_MAX_PORTS];
cf_t *_ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS];
_sf_symbols[0] = sf_symbols;
for (int i=0;i<q->cell.nof_ports;i++) {
_ce[i][0] = ce[i];
}
return srslte_phich_decode_multi(q, _sf_symbols, _ce, noise_estimate, ngroup, nseq, subframe, ack, distance);
}
/* Decodes the phich channel and saves the CFI in the cfi pointer.
*
* Returns 1 if successfully decoded the CFI, 0 if not and -1 on error
*/
int srslte_phich_decode_multi(srslte_phich_t *q, cf_t *sf_symbols[SRSLTE_MAX_PORTS], cf_t *ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS], float noise_estimate,
uint32_t ngroup, uint32_t nseq, uint32_t subframe, uint8_t *ack, float *distance)
{
int srslte_phich_decode(srslte_phich_t *q, cf_t *sf_symbols[SRSLTE_MAX_PORTS],
cf_t *ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS], float noise_estimate,
uint32_t ngroup, uint32_t nseq, uint32_t subframe, uint8_t *ack, float *distance) {
/* Set pointers for layermapping & precoding */
int i, j;

2
lib/src/phy/phch/test/phich_file_test.c
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@ -263,7 +263,7 @@ int main(int argc, char **argv) {
for (ngroup=0;ngroup<srslte_phich_ngroups(&phich);ngroup++) {
for (nseq=0;nseq<max_nseq;nseq++) {
if (srslte_phich_decode(&phich, fft_buffer, ce, srslte_chest_dl_get_noise_estimate(&chest), ngroup, nseq, numsubframe, &ack_rx, &distance)<0) {
if (srslte_phich_decode(&phich, &fft_buffer, &ce, srslte_chest_dl_get_noise_estimate(&chest), ngroup, nseq, numsubframe, &ack_rx, &distance)<0) {
printf("Error decoding ACK\n");
exit(-1);
}

24
lib/src/phy/phch/test/phich_test.c
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@ -103,7 +103,7 @@ int main(int argc, char **argv) {
srslte_phich_t phich;
srslte_regs_t regs;
int i, j;
cf_t *ce[SRSLTE_MAX_PORTS];
cf_t *ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS];
int nof_re;
cf_t *slot_symbols[SRSLTE_MAX_PORTS];
uint8_t ack[50][SRSLTE_PHICH_NORM_NSEQUENCES], ack_rx;
@ -120,13 +120,15 @@ int main(int argc, char **argv) {
/* init memory */
for (i=0;i<SRSLTE_MAX_PORTS;i++) {
ce[i] = malloc(sizeof(cf_t) * nof_re);
if (!ce[i]) {
perror("malloc");
exit(-1);
}
for (j=0;j<nof_re;j++) {
ce[i][j] = 1;
for (int k=0;k<SRSLTE_MAX_PORTS;k++) {
ce[k][i] = malloc(sizeof(cf_t) * nof_re);
if (!ce[k][i]) {
perror("malloc");
exit(-1);
}
for (j = 0; j < nof_re; j++) {
ce[k][i][j] = 1;
}
}
slot_symbols[i] = malloc(sizeof(cf_t) * nof_re);
if (!slot_symbols[i]) {
@ -185,7 +187,7 @@ int main(int argc, char **argv) {
for (ngroup=0;ngroup<srslte_phich_ngroups(&phich);ngroup++) {
for (nseq=0;nseq<max_nseq;nseq++) {
if (srslte_phich_decode(&phich, slot_symbols[0], ce, 0, ngroup, nseq, nsf, &ack_rx, &distance)<0) {
if (srslte_phich_decode(&phich, slot_symbols, ce, 0, ngroup, nseq, nsf, &ack_rx, &distance)<0) {
printf("Error decoding ACK\n");
exit(-1);
}
@ -208,7 +210,9 @@ int main(int argc, char **argv) {
srslte_phich_free(&phich);
for (i=0;i<SRSLTE_MAX_PORTS;i++) {
free(ce[i]);
for (j = 0; j < SRSLTE_MAX_PORTS; j++) {
free(ce[i][j]);
}
free(slot_symbols[i]);
}
printf("OK\n");

8
lib/src/phy/ue/ue_dl.c
Unescape Escape View File

@ -776,13 +776,7 @@ bool srslte_ue_dl_decode_phich(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t n_pr
sf_idx, n_prb_lowest, n_dmrs, ngroup, nseq,
srslte_phich_ngroups(&q->phich), srslte_phich_nsf(&q->phich));
cf_t *ce0[SRSLTE_MAX_PORTS];
for (int i=0;i<SRSLTE_MAX_PORTS;i++) {
ce0[i] = q->ce_m[i][0];
}
if (!srslte_phich_decode(&q->phich, q->sf_symbols_m[0], ce0, 0, ngroup, nseq, sf_idx, &ack_bit, &distance)) {
if (!srslte_phich_decode(&q->phich, q->sf_symbols_m, q->ce_m, 0, ngroup, nseq, sf_idx, &ack_bit, &distance)) {
INFO("Decoded PHICH %d with distance %f\n", ack_bit, distance);
} else {
fprintf(stderr, "Error decoding PHICH\n");

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