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Restored non-guru DFT interface. Removed input buffer from ue_dl interface

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master
Ismael Gomez 7 years ago
parent b9854b65da
commit cfbea7a6c1
10 changed files with 91 additions and 41 deletions
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2
lib/examples/cell_measurement.c
Unescape Escape View File

@ -332,7 +332,7 @@ int main(int argc, char **argv) {
case DECODE_SIB: case DECODE_SIB:
/* We are looking for SI Blocks, search only in appropiate places */ /* We are looking for SI Blocks, search only in appropiate places */
if ((srslte_ue_sync_get_sfidx(&ue_sync) == 5 && (sfn%2)==0)) { if ((srslte_ue_sync_get_sfidx(&ue_sync) == 5 && (sfn%2)==0)) {
n = srslte_ue_dl_decode(&ue_dl, sf_buffer, data, 0, sfn*10+srslte_ue_sync_get_sfidx(&ue_sync), acks); n = srslte_ue_dl_decode(&ue_dl, data, 0, sfn*10+srslte_ue_sync_get_sfidx(&ue_sync), acks);
if (n < 0) { if (n < 0) {
fprintf(stderr, "Error decoding UE DL\n");fflush(stdout); fprintf(stderr, "Error decoding UE DL\n");fflush(stdout);
return -1; return -1;

9
lib/examples/pdsch_ue.c
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@ -663,26 +663,25 @@ int main(int argc, char **argv) {
if(sfidx != 1 || prog_args.mbsfn_area_id < 0){ // Not an MBSFN subframe if(sfidx != 1 || prog_args.mbsfn_area_id < 0){ // Not an MBSFN subframe
if (cell.nof_ports == 1) { if (cell.nof_ports == 1) {
/* Transmission mode 1 */ /* Transmission mode 1 */
n = srslte_ue_dl_decode(&ue_dl, sf_buffer, data, 0, sfn*10+srslte_ue_sync_get_sfidx(&ue_sync), acks); n = srslte_ue_dl_decode(&ue_dl, data, 0, sfn*10+srslte_ue_sync_get_sfidx(&ue_sync), acks);
} else { } else {
if (prog_args.rf_nof_rx_ant == 1) { if (prog_args.rf_nof_rx_ant == 1) {
/* Transmission mode 2 */ /* Transmission mode 2 */
n = srslte_ue_dl_decode(&ue_dl, sf_buffer, data, 1, sfn * 10 + srslte_ue_sync_get_sfidx(&ue_sync), n = srslte_ue_dl_decode(&ue_dl, data, 1, sfn * 10 + srslte_ue_sync_get_sfidx(&ue_sync),
acks); acks);
} else { } else {
/* Transmission mode 3 */ /* Transmission mode 3 */
n = srslte_ue_dl_decode(&ue_dl, sf_buffer, data, 2, sfn * 10 + srslte_ue_sync_get_sfidx(&ue_sync), n = srslte_ue_dl_decode(&ue_dl, data, 2, sfn * 10 + srslte_ue_sync_get_sfidx(&ue_sync),
acks); acks);
if (n < 1) { if (n < 1) {
/* Transmission mode 4 */ /* Transmission mode 4 */
n = srslte_ue_dl_decode(&ue_dl, sf_buffer, data, 3, sfn * 10 + srslte_ue_sync_get_sfidx(&ue_sync), n = srslte_ue_dl_decode(&ue_dl, data, 3, sfn * 10 + srslte_ue_sync_get_sfidx(&ue_sync),
acks); acks);
} }
} }
} }
}else{ // MBSFN subframe }else{ // MBSFN subframe
n = srslte_ue_dl_decode_mbsfn(&ue_dl, n = srslte_ue_dl_decode_mbsfn(&ue_dl,
sf_buffer,
data[0], data[0],
sfn*10+srslte_ue_sync_get_sfidx(&ue_sync)); sfn*10+srslte_ue_sync_get_sfidx(&ue_sync));
if(n>0){ if(n>0){

8
lib/include/srslte/phy/dft/ofdm.h
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@ -113,8 +113,16 @@ SRSLTE_API void srslte_ofdm_rx_free(srslte_ofdm_t *q);
SRSLTE_API void srslte_ofdm_rx_slot(srslte_ofdm_t *q, SRSLTE_API void srslte_ofdm_rx_slot(srslte_ofdm_t *q,
int slot_in_sf); int slot_in_sf);
SRSLTE_API void srslte_ofdm_rx_slot_ng(srslte_ofdm_t *q,
cf_t *input,
cf_t *output);
SRSLTE_API void srslte_ofdm_rx_sf(srslte_ofdm_t *q); SRSLTE_API void srslte_ofdm_rx_sf(srslte_ofdm_t *q);
SRSLTE_API void srslte_ofdm_rx_sf_ng(srslte_ofdm_t *q,
cf_t *input,
cf_t *output);
SRSLTE_API int srslte_ofdm_tx_init(srslte_ofdm_t *q, SRSLTE_API int srslte_ofdm_tx_init(srslte_ofdm_t *q,
srslte_cp_t cp_type, srslte_cp_t cp_type,
cf_t *in_buffer, cf_t *in_buffer,

13
lib/include/srslte/phy/ue/ue_dl.h
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@ -131,7 +131,7 @@ typedef struct SRSLTE_API {
/* This function shall be called just after the initial synchronization */ /* This function shall be called just after the initial synchronization */
SRSLTE_API int srslte_ue_dl_init(srslte_ue_dl_t *q, SRSLTE_API int srslte_ue_dl_init(srslte_ue_dl_t *q,
cf_t *in_buffer[SRSLTE_MAX_PORTS], cf_t *input[SRSLTE_MAX_PORTS],
uint32_t max_prb, uint32_t max_prb,
uint32_t nof_rx_antennas); uint32_t nof_rx_antennas);
@ -141,18 +141,20 @@ SRSLTE_API int srslte_ue_dl_set_cell(srslte_ue_dl_t *q,
srslte_cell_t cell); srslte_cell_t cell);
int srslte_ue_dl_decode_fft_estimate(srslte_ue_dl_t *q, int srslte_ue_dl_decode_fft_estimate(srslte_ue_dl_t *q,
cf_t *input[SRSLTE_MAX_PORTS],
uint32_t sf_idx, uint32_t sf_idx,
uint32_t *cfi); uint32_t *cfi);
SRSLTE_API int srslte_ue_dl_decode_fft_estimate_mbsfn(srslte_ue_dl_t *q, SRSLTE_API int srslte_ue_dl_decode_fft_estimate_mbsfn(srslte_ue_dl_t *q,
cf_t *input[SRSLTE_MAX_PORTS],
uint32_t sf_idx, uint32_t sf_idx,
uint32_t *cfi, uint32_t *cfi,
srslte_sf_t sf_type); srslte_sf_t sf_type);
SRSLTE_API int srslte_ue_dl_decode_fft_estimate_noguru(srslte_ue_dl_t *q,
cf_t *input[SRSLTE_MAX_PORTS],
uint32_t sf_idx,
uint32_t *cfi);
int srslte_ue_dl_decode_estimate(srslte_ue_dl_t *q, SRSLTE_API int srslte_ue_dl_decode_estimate(srslte_ue_dl_t *q,
uint32_t sf_idx, uint32_t sf_idx,
uint32_t *cfi); uint32_t *cfi);
@ -195,14 +197,12 @@ SRSLTE_API void srslte_ue_dl_set_sample_offset(srslte_ue_dl_t * q,
float sample_offset); float sample_offset);
SRSLTE_API int srslte_ue_dl_decode(srslte_ue_dl_t *q, SRSLTE_API int srslte_ue_dl_decode(srslte_ue_dl_t *q,
cf_t *input[SRSLTE_MAX_PORTS],
uint8_t *data[SRSLTE_MAX_CODEWORDS], uint8_t *data[SRSLTE_MAX_CODEWORDS],
uint32_t tm, uint32_t tm,
uint32_t tti, uint32_t tti,
bool acks[SRSLTE_MAX_CODEWORDS]); bool acks[SRSLTE_MAX_CODEWORDS]);
SRSLTE_API int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, SRSLTE_API int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q,
cf_t *input[SRSLTE_MAX_PORTS],
uint8_t *data[SRSLTE_MAX_CODEWORDS], uint8_t *data[SRSLTE_MAX_CODEWORDS],
uint32_t tm, uint32_t tm,
uint32_t tti, uint32_t tti,
@ -216,7 +216,6 @@ SRSLTE_API int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q,
* srslte_pmch_decode_multi * srslte_pmch_decode_multi
*/ */
SRSLTE_API int srslte_ue_dl_decode_mbsfn(srslte_ue_dl_t * q, SRSLTE_API int srslte_ue_dl_decode_mbsfn(srslte_ue_dl_t * q,
cf_t *input[SRSLTE_MAX_PORTS],
uint8_t *data, uint8_t *data,
uint32_t tti); uint32_t tti);

35
lib/src/phy/dft/ofdm.c
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@ -380,15 +380,8 @@ void srslte_ofdm_tx_free(srslte_ofdm_t *q) {
srslte_ofdm_free_(q); srslte_ofdm_free_(q);
} }
/* Transforms input samples into output OFDM symbols. void srslte_ofdm_rx_slot_ng(srslte_ofdm_t *q, cf_t *input, cf_t *output) {
* Performs FFT on a each symbol and removes CP.
*/
void srslte_ofdm_rx_slot(srslte_ofdm_t *q, int slot_in_sf) {
cf_t *output = q->out_buffer + slot_in_sf * q->nof_re * q->nof_symbols;
#ifdef AVOID_GURU
uint32_t i; uint32_t i;
cf_t *input = q->in_buffer + slot_in_sf * q->slot_sz;
for (i=0;i<q->nof_symbols;i++) { for (i=0;i<q->nof_symbols;i++) {
input += SRSLTE_CP_ISNORM(q->cp)?SRSLTE_CP_LEN_NORM(i, q->symbol_sz):SRSLTE_CP_LEN_EXT(q->symbol_sz); input += SRSLTE_CP_ISNORM(q->cp)?SRSLTE_CP_LEN_NORM(i, q->symbol_sz):SRSLTE_CP_LEN_EXT(q->symbol_sz);
srslte_dft_run_c(&q->fft_plan, input, q->tmp); srslte_dft_run_c(&q->fft_plan, input, q->tmp);
@ -396,6 +389,16 @@ void srslte_ofdm_rx_slot(srslte_ofdm_t *q, int slot_in_sf) {
input += q->symbol_sz; input += q->symbol_sz;
output += q->nof_re; output += q->nof_re;
} }
}
/* Transforms input samples into output OFDM symbols.
* Performs FFT on a each symbol and removes CP.
*/
void srslte_ofdm_rx_slot(srslte_ofdm_t *q, int slot_in_sf) {
cf_t *output = q->out_buffer + slot_in_sf * q->nof_re * q->nof_symbols;
#ifdef AVOID_GURU
srslte_ofdm_rx_slot_ng(q, q->in_buffer + slot_in_sf * q->slot_sz, q->out_buffer + slot_in_sf * q->nof_re * q->nof_symbols);
#else #else
float norm = 1.0f/sqrtf(q->fft_plan.size); float norm = 1.0f/sqrtf(q->fft_plan.size);
cf_t *tmp = q->tmp + slot_in_sf * q->symbol_sz * q->nof_symbols; cf_t *tmp = q->tmp + slot_in_sf * q->symbol_sz * q->nof_symbols;
@ -462,6 +465,22 @@ void srslte_ofdm_rx_sf(srslte_ofdm_t *q) {
} }
} }
void srslte_ofdm_rx_sf_ng(srslte_ofdm_t *q, cf_t *input, cf_t *output) {
uint32_t n;
if (q->freq_shift) {
srslte_vec_prod_ccc(q->in_buffer, q->shift_buffer, q->in_buffer, 2*q->slot_sz);
}
if(!q->mbsfn_subframe){
for (n=0;n<2;n++) {
srslte_ofdm_rx_slot_ng(q, &input[n*q->slot_sz], &output[n*q->nof_re*q->nof_symbols]);
}
}
else{
srslte_ofdm_rx_slot_mbsfn(q, &q->in_buffer[0*q->slot_sz], &q->out_buffer[0*q->nof_re*q->nof_symbols]);
srslte_ofdm_rx_slot(q, 1);
}
}
/* Transforms input OFDM symbols into output samples. /* Transforms input OFDM symbols into output samples.
* Performs FFT on a each symbol and adds CP. * Performs FFT on a each symbol and adds CP.
*/ */

2
lib/src/phy/phch/test/pdsch_pdcch_file_test.c
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@ -182,7 +182,7 @@ int main(int argc, char **argv) {
srslte_filesource_read(&fsrc, input_buffer[0], flen); srslte_filesource_read(&fsrc, input_buffer[0], flen);
INFO("Reading %d samples sub-frame %d\n", flen, sf_idx); INFO("Reading %d samples sub-frame %d\n", flen, sf_idx);
ret = srslte_ue_dl_decode(&ue_dl, input_buffer, data, 0, sf_idx, acks); ret = srslte_ue_dl_decode(&ue_dl, data, 0, sf_idx, acks);
if(ret > 0) { if(ret > 0) {
printf("PDSCH Decoded OK!\n"); printf("PDSCH Decoded OK!\n");
} else if (ret == 0) { } else if (ret == 0) {

2
lib/src/phy/phch/test/pmch_file_test.c
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@ -187,7 +187,7 @@ int main(int argc, char **argv) {
srslte_filesource_read(&fsrc, input_buffer[0], flen); srslte_filesource_read(&fsrc, input_buffer[0], flen);
INFO("Reading %d samples sub-frame %d\n", flen, sf_idx); INFO("Reading %d samples sub-frame %d\n", flen, sf_idx);
ret = srslte_ue_dl_decode_mbsfn(&ue_dl, input_buffer, data[0], sf_idx); ret = srslte_ue_dl_decode_mbsfn(&ue_dl, data[0], sf_idx);
if(ret > 0) { if(ret > 0) {
printf("PMCH Decoded OK!\n"); printf("PMCH Decoded OK!\n");
} else if (ret < 0) { } else if (ret < 0) {

45
lib/src/phy/ue/ue_dl.c
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@ -359,20 +359,20 @@ void srslte_ue_dl_set_sample_offset(srslte_ue_dl_t * q, float sample_offset) {
* - PDCCH decoding: Find DCI for RNTI given by previous call to srslte_ue_dl_set_rnti() * - PDCCH decoding: Find DCI for RNTI given by previous call to srslte_ue_dl_set_rnti()
* - PDSCH decoding: Decode TB scrambling with RNTI given by srslte_ue_dl_set_rnti() * - PDSCH decoding: Decode TB scrambling with RNTI given by srslte_ue_dl_set_rnti()
*/ */
int srslte_ue_dl_decode(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint8_t *data[SRSLTE_MAX_CODEWORDS], int srslte_ue_dl_decode(srslte_ue_dl_t *q, uint8_t *data[SRSLTE_MAX_CODEWORDS],
uint32_t tm, uint32_t tti, bool acks[SRSLTE_MAX_CODEWORDS]) { uint32_t tm, uint32_t tti, bool acks[SRSLTE_MAX_CODEWORDS]) {
return srslte_ue_dl_decode_rnti(q, input, data, tm, tti, q->current_rnti, acks); return srslte_ue_dl_decode_rnti(q, data, tm, tti, q->current_rnti, acks);
} }
int srslte_ue_dl_decode_fft_estimate(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint32_t sf_idx, uint32_t *cfi){ int srslte_ue_dl_decode_fft_estimate(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t *cfi){
return srslte_ue_dl_decode_fft_estimate_mbsfn(q, input, sf_idx, cfi, SRSLTE_SF_NORM); return srslte_ue_dl_decode_fft_estimate_mbsfn(q, sf_idx, cfi, SRSLTE_SF_NORM);
} }
int srslte_ue_dl_decode_fft_estimate_mbsfn(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint32_t sf_idx, uint32_t *cfi, srslte_sf_t sf_type) int srslte_ue_dl_decode_fft_estimate_mbsfn(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t *cfi, srslte_sf_t sf_type)
{ {
if (input && q && cfi && sf_idx < SRSLTE_NSUBFRAMES_X_FRAME) { if (q && cfi && sf_idx < SRSLTE_NSUBFRAMES_X_FRAME) {
/* Run FFT for all subframe data */ /* Run FFT for all subframe data */
for (int j=0;j<q->nof_rx_antennas;j++) { for (int j=0;j<q->nof_rx_antennas;j++) {
@ -398,6 +398,32 @@ int srslte_ue_dl_decode_fft_estimate_mbsfn(srslte_ue_dl_t *q, cf_t *input[SRSLTE
return SRSLTE_ERROR_INVALID_INPUTS; return SRSLTE_ERROR_INVALID_INPUTS;
} }
} }
int srslte_ue_dl_decode_fft_estimate_noguru(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint32_t sf_idx, uint32_t *cfi)
{
if (input && q && cfi && sf_idx < SRSLTE_NSUBFRAMES_X_FRAME) {
/* Run FFT for all subframe data */
for (int j=0;j<q->nof_rx_antennas;j++) {
srslte_ofdm_rx_sf_ng(&q->fft[j], input[j], q->sf_symbols_m[j]);
/* Correct SFO multiplying by complex exponential in the time domain */
if (q->sample_offset) {
int nsym = SRSLTE_CP_NSYMB(q->cell.cp);
for (int i=0;i<2*nsym;i++) {
srslte_cfo_correct(&q->sfo_correct,
&q->sf_symbols_m[j][i*q->cell.nof_prb*SRSLTE_NRE],
&q->sf_symbols_m[j][i*q->cell.nof_prb*SRSLTE_NRE],
q->sample_offset / q->fft[j].symbol_sz);
}
}
}
return srslte_ue_dl_decode_estimate_mbsfn(q, sf_idx, cfi, SRSLTE_SF_NORM);
} else {
return SRSLTE_ERROR_INVALID_INPUTS;
}
}
int srslte_ue_dl_decode_estimate(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t *cfi) { int srslte_ue_dl_decode_estimate(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t *cfi) {
return srslte_ue_dl_decode_estimate_mbsfn(q, sf_idx, cfi, SRSLTE_SF_NORM); return srslte_ue_dl_decode_estimate_mbsfn(q, sf_idx, cfi, SRSLTE_SF_NORM);
@ -468,7 +494,7 @@ int srslte_ue_dl_cfg_grant(srslte_ue_dl_t *q, srslte_ra_dl_grant_t *grant, uint3
} }
} }
int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q,
uint8_t *data[SRSLTE_MAX_CODEWORDS], uint32_t tm, uint32_t tti, uint16_t rnti, uint8_t *data[SRSLTE_MAX_CODEWORDS], uint32_t tm, uint32_t tti, uint16_t rnti,
bool acks[SRSLTE_MAX_CODEWORDS]) { bool acks[SRSLTE_MAX_CODEWORDS]) {
srslte_mimo_type_t mimo_type; srslte_mimo_type_t mimo_type;
@ -479,7 +505,7 @@ int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS],
uint32_t cfi; uint32_t cfi;
uint32_t sf_idx = tti%10; uint32_t sf_idx = tti%10;
if ((ret = srslte_ue_dl_decode_fft_estimate_mbsfn(q, input, sf_idx, &cfi, SRSLTE_SF_NORM)) < 0) { if ((ret = srslte_ue_dl_decode_fft_estimate_mbsfn(q, sf_idx, &cfi, SRSLTE_SF_NORM)) < 0) {
return ret; return ret;
} }
@ -621,7 +647,6 @@ int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS],
int srslte_ue_dl_decode_mbsfn(srslte_ue_dl_t * q, int srslte_ue_dl_decode_mbsfn(srslte_ue_dl_t * q,
cf_t *input[SRSLTE_MAX_PORTS],
uint8_t *data, uint8_t *data,
uint32_t tti) uint32_t tti)
{ {
@ -630,7 +655,7 @@ int srslte_ue_dl_decode_mbsfn(srslte_ue_dl_t * q,
uint32_t cfi; uint32_t cfi;
uint32_t sf_idx = tti%10; uint32_t sf_idx = tti%10;
if ((ret = srslte_ue_dl_decode_fft_estimate_mbsfn(q, input, sf_idx, &cfi, SRSLTE_SF_MBSFN)) < 0) { if ((ret = srslte_ue_dl_decode_fft_estimate_mbsfn(q, sf_idx, &cfi, SRSLTE_SF_MBSFN)) < 0) {
return ret; return ret;
} }

2
srsue/src/phy/phch_recv.cc
Unescape Escape View File

@ -1054,7 +1054,7 @@ phch_recv::measure::ret_code phch_recv::measure::run_multiple_subframes(cf_t *in
phch_recv::measure::ret_code phch_recv::measure::run_subframe(uint32_t sf_idx) phch_recv::measure::ret_code phch_recv::measure::run_subframe(uint32_t sf_idx)
{ {
uint32_t cfi = 0; uint32_t cfi = 0;
if (srslte_ue_dl_decode_fft_estimate(&ue_dl, buffer, sf_idx, &cfi)) { if (srslte_ue_dl_decode_fft_estimate(&ue_dl, sf_idx, &cfi)) {
log_h->error("SYNC: Measuring RSRP: Estimating channel\n"); log_h->error("SYNC: Measuring RSRP: Estimating channel\n");
return ERROR; return ERROR;
} }

2
srsue/src/phy/phch_worker.cc
Unescape Escape View File

@ -420,7 +420,7 @@ bool phch_worker::extract_fft_and_pdcch_llr() {
srslte_chest_dl_set_noise_alg(&ue_dl.chest, SRSLTE_NOISE_ALG_PSS); srslte_chest_dl_set_noise_alg(&ue_dl.chest, SRSLTE_NOISE_ALG_PSS);
} }
if (srslte_ue_dl_decode_fft_estimate(&ue_dl, signal_buffer, tti%10, &cfi) < 0) { if (srslte_ue_dl_decode_fft_estimate(&ue_dl, tti%10, &cfi) < 0) {
Error("Getting PDCCH FFT estimate\n"); Error("Getting PDCCH FFT estimate\n");
return false; return false;
} }

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