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srsRAN_4G
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compatible with single port srsUE

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master
Ismael Gomez 8 years ago
parent 5de9fa6a46
commit 255c157cb2
14 changed files with 247 additions and 74 deletions
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8
srslte/examples/cell_measurement.c
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@ -237,11 +237,11 @@ int main(int argc, char **argv) {
srslte_rf_stop_rx_stream(&rf);
srslte_rf_flush_buffer(&rf);
if (srslte_ue_sync_init(&ue_sync, cell, srslte_rf_recv_wrapper, 1, (void*) &rf)) {
if (srslte_ue_sync_init_multi(&ue_sync, cell, srslte_rf_recv_wrapper, 1, (void*) &rf)) {
fprintf(stderr, "Error initiating ue_sync\n");
return -1;
}
if (srslte_ue_dl_init(&ue_dl, cell, 1)) {
if (srslte_ue_dl_init_multi(&ue_dl, cell, 1)) {
fprintf(stderr, "Error initiating UE downlink processing module\n");
return -1;
}
@ -283,7 +283,7 @@ int main(int argc, char **argv) {
/* Main loop */
while ((sf_cnt < prog_args.nof_subframes || prog_args.nof_subframes == -1) && !go_exit) {
ret = srslte_ue_sync_zerocopy(&ue_sync, sf_buffer);
ret = srslte_ue_sync_zerocopy_multi(&ue_sync, sf_buffer);
if (ret < 0) {
fprintf(stderr, "Error calling srslte_ue_sync_work()\n");
}
@ -310,7 +310,7 @@ int main(int argc, char **argv) {
case DECODE_SIB:
/* We are looking for SI Blocks, search only in appropiate places */
if ((srslte_ue_sync_get_sfidx(&ue_sync) == 5 && (sfn%2)==0)) {
n = srslte_ue_dl_decode(&ue_dl, sf_buffer, data, sfn*10+srslte_ue_sync_get_sfidx(&ue_sync));
n = srslte_ue_dl_decode_multi(&ue_dl, sf_buffer, data, sfn*10+srslte_ue_sync_get_sfidx(&ue_sync));
if (n < 0) {
fprintf(stderr, "Error decoding UE DL\n");fflush(stdout);
return -1;

2
srslte/examples/cell_search.c
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@ -204,7 +204,7 @@ int main(int argc, char **argv) {
bzero(found_cells, 3*sizeof(srslte_ue_cellsearch_result_t));
if (srslte_ue_cellsearch_init(&cs, cell_detect_config.max_frames_pss, srslte_rf_recv_wrapper, 1, (void*) &rf)) {
if (srslte_ue_cellsearch_init_multi(&cs, cell_detect_config.max_frames_pss, srslte_rf_recv_wrapper, 1, (void*) &rf)) {
fprintf(stderr, "Error initiating UE cell detect\n");
exit(-1);
}

18
srslte/examples/pdsch_ue.c
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@ -411,7 +411,7 @@ int main(int argc, char **argv) {
} else {
#ifndef DISABLE_RF
if (srslte_ue_sync_init(&ue_sync, cell, srslte_rf_recv_wrapper, prog_args.rf_nof_rx_ant, (void*) &rf)) {
if (srslte_ue_sync_init_multi(&ue_sync, cell, srslte_rf_recv_wrapper, prog_args.rf_nof_rx_ant, (void*) &rf)) {
fprintf(stderr, "Error initiating ue_sync\n");
exit(-1);
}
@ -423,7 +423,7 @@ int main(int argc, char **argv) {
exit(-1);
}
if (srslte_ue_dl_init(&ue_dl, cell, prog_args.rf_nof_rx_ant)) { // This is the User RNTI
if (srslte_ue_dl_init_multi(&ue_dl, cell, prog_args.rf_nof_rx_ant)) { // This is the User RNTI
fprintf(stderr, "Error initiating UE downlink processing module\n");
exit(-1);
}
@ -478,7 +478,7 @@ int main(int argc, char **argv) {
/* Main loop */
while (!go_exit && (sf_cnt < prog_args.nof_subframes || prog_args.nof_subframes == -1)) {
ret = srslte_ue_sync_zerocopy(&ue_sync, sf_buffer);
ret = srslte_ue_sync_zerocopy_multi(&ue_sync, sf_buffer);
if (ret < 0) {
fprintf(stderr, "Error calling srslte_ue_sync_work()\n");
}
@ -519,10 +519,10 @@ int main(int argc, char **argv) {
}
if (decode_pdsch) {
INFO("Attempting DL decode SFN=%d\n", sfn);
n = srslte_ue_dl_decode(&ue_dl,
sf_buffer,
data,
sfn*10+srslte_ue_sync_get_sfidx(&ue_sync));
n = srslte_ue_dl_decode_multi(&ue_dl,
sf_buffer,
data,
sfn*10+srslte_ue_sync_get_sfidx(&ue_sync));
if (n < 0) {
// fprintf(stderr, "Error decoding UE DL\n");fflush(stdout);
@ -701,7 +701,7 @@ void *plot_thread_run(void *arg) {
uint32_t nof_symbols = ue_dl.pdsch_cfg.nbits.nof_re;
if (!prog_args.disable_plots_except_constellation) {
for (i = 0; i < nof_re; i++) {
tmp_plot[i] = 20 * log10f(cabsf(ue_dl.sf_symbols[0][i]));
tmp_plot[i] = 20 * log10f(cabsf(ue_dl.sf_symbols[i]));
if (isinf(tmp_plot[i])) {
tmp_plot[i] = -80;
}
@ -710,7 +710,7 @@ void *plot_thread_run(void *arg) {
bzero(tmp_plot2, sizeof(float)*sz);
int g = (sz - 12*ue_dl.cell.nof_prb)/2;
for (i = 0; i < 12*ue_dl.cell.nof_prb; i++) {
tmp_plot2[g+i] = 20 * log10(cabs(ue_dl.ce[0][0][i]));
tmp_plot2[g+i] = 20 * log10(cabs(ue_dl.ce[0][i]));
if (isinf(tmp_plot2[g+i])) {
tmp_plot2[g+i] = -80;
}

4
srslte/examples/usrp_capture_sync.c
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@ -158,7 +158,7 @@ int main(int argc, char **argv) {
cell.nof_prb = nof_prb;
cell.nof_ports = 1;
if (srslte_ue_sync_init(&ue_sync, cell, srslte_rf_recv_wrapper, 1, (void*) &rf)) {
if (srslte_ue_sync_init_multi(&ue_sync, cell, srslte_rf_recv_wrapper, 1, (void*) &rf)) {
fprintf(stderr, "Error initiating ue_sync\n");
exit(-1);
}
@ -169,7 +169,7 @@ int main(int argc, char **argv) {
while((subframe_count < nof_subframes || nof_subframes == -1)
&& !stop_capture)
{
n = srslte_ue_sync_zerocopy(&ue_sync, buffer);
n = srslte_ue_sync_zerocopy_multi(&ue_sync, buffer);
if (n < 0) {
fprintf(stderr, "Error receiving samples\n");
exit(-1);

9
srslte/include/srslte/ue/ue_cell_search.h
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@ -83,10 +83,15 @@ typedef struct SRSLTE_API {
SRSLTE_API int srslte_ue_cellsearch_init(srslte_ue_cellsearch_t *q,
uint32_t max_frames_total,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t,srslte_timestamp_t*),
uint32_t nof_rx_antennas,
int (recv_callback)(void*, void*, uint32_t,srslte_timestamp_t*),
void *stream_handler);
SRSLTE_API int srslte_ue_cellsearch_init_multi(srslte_ue_cellsearch_t *q,
uint32_t max_frames_total,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t,srslte_timestamp_t*),
uint32_t nof_rx_antennas,
void *stream_handler);
SRSLTE_API void srslte_ue_cellsearch_free(srslte_ue_cellsearch_t *q);
SRSLTE_API int srslte_ue_cellsearch_scan_N_id_2(srslte_ue_cellsearch_t *q,

33
srslte/include/srslte/ue/ue_dl.h
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@ -90,8 +90,10 @@ typedef struct SRSLTE_API {
uint32_t nof_rx_antennas;
cf_t *sf_symbols[SRSLTE_MAX_PORTS];
cf_t *ce[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS];
cf_t *sf_symbols; // this is for backwards compatibility
cf_t *sf_symbols_m[SRSLTE_MAX_PORTS];
cf_t *ce[SRSLTE_MAX_PORTS]; // compatibility
cf_t *ce_m[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS];
srslte_dci_format_t dci_format;
uint64_t pkt_errors;
@ -112,12 +114,20 @@ typedef struct SRSLTE_API {
/* This function shall be called just after the initial synchronization */
SRSLTE_API int srslte_ue_dl_init(srslte_ue_dl_t *q,
srslte_cell_t cell,
uint32_t nof_rx_antennas);
srslte_cell_t cell);
SRSLTE_API int srslte_ue_dl_init_multi(srslte_ue_dl_t *q,
srslte_cell_t cell,
uint32_t nof_rx_antennas);
SRSLTE_API void srslte_ue_dl_free(srslte_ue_dl_t *q);
SRSLTE_API int srslte_ue_dl_decode_fft_estimate(srslte_ue_dl_t *q,
cf_t *input,
uint32_t sf_idx,
uint32_t *cfi);
SRSLTE_API int srslte_ue_dl_decode_fft_estimate_multi(srslte_ue_dl_t *q,
cf_t *input[SRSLTE_MAX_PORTS],
uint32_t sf_idx,
uint32_t *cfi);
@ -157,16 +167,27 @@ SRSLTE_API void srslte_ue_dl_set_sample_offset(srslte_ue_dl_t * q,
float sample_offset);
SRSLTE_API int srslte_ue_dl_decode(srslte_ue_dl_t * q,
cf_t *input[SRSLTE_MAX_PORTS],
cf_t *input,
uint8_t *data,
uint32_t tti);
SRSLTE_API int srslte_ue_dl_decode_multi(srslte_ue_dl_t * q,
cf_t *input[SRSLTE_MAX_PORTS],
uint8_t *data,
uint32_t tti);
SRSLTE_API int srslte_ue_dl_decode_rnti(srslte_ue_dl_t * q,
cf_t *input[SRSLTE_MAX_PORTS],
cf_t *input,
uint8_t *data,
uint32_t tti,
uint16_t rnti);
SRSLTE_API int srslte_ue_dl_decode_rnti_multi(srslte_ue_dl_t * q,
cf_t *input[SRSLTE_MAX_PORTS],
uint8_t *data,
uint32_t tti,
uint16_t rnti);
SRSLTE_API bool srslte_ue_dl_decode_phich(srslte_ue_dl_t *q,
uint32_t sf_idx,
uint32_t n_prb_lowest,

10
srslte/include/srslte/ue/ue_mib.h
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@ -107,10 +107,16 @@ typedef struct {
SRSLTE_API int srslte_ue_mib_sync_init(srslte_ue_mib_sync_t *q,
uint32_t cell_id,
srslte_cp_t cp,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t *),
uint32_t nof_rx_antennas,
int (recv_callback)(void*, void*, uint32_t, srslte_timestamp_t *),
void *stream_handler);
SRSLTE_API int srslte_ue_mib_sync_init_multi(srslte_ue_mib_sync_t *q,
uint32_t cell_id,
srslte_cp_t cp,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t *),
uint32_t nof_rx_antennas,
void *stream_handler);
SRSLTE_API void srslte_ue_mib_sync_free(srslte_ue_mib_sync_t *q);
SRSLTE_API void srslte_ue_mib_sync_reset(srslte_ue_mib_sync_t * q);

19
srslte/include/srslte/ue/ue_sync.h
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@ -75,7 +75,8 @@ typedef struct SRSLTE_API {
uint32_t agc_period;
void *stream;
int (*recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t*);
int (*recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t*);
int (*recv_callback_single)(void*, void*, uint32_t, srslte_timestamp_t*);
srslte_timestamp_t last_timestamp;
uint32_t nof_rx_antennas;
@ -115,19 +116,24 @@ typedef struct SRSLTE_API {
float mean_sfo;
uint32_t sample_offset_correct_period;
float sfo_ema;
#ifdef MEASURE_EXEC_TIME
float mean_exec_time;
#endif
} srslte_ue_sync_t;
SRSLTE_API int srslte_ue_sync_init(srslte_ue_sync_t *q,
srslte_cell_t cell,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t*),
uint32_t nof_rx_antennas,
int (recv_callback)(void*, void*, uint32_t, srslte_timestamp_t*),
void *stream_handler);
SRSLTE_API int srslte_ue_sync_init_multi(srslte_ue_sync_t *q,
srslte_cell_t cell,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t*),
uint32_t nof_rx_antennas,
void *stream_handler);
SRSLTE_API int srslte_ue_sync_init_file(srslte_ue_sync_t *q,
uint32_t nof_prb,
char *file_name,
@ -147,7 +153,10 @@ SRSLTE_API void srslte_ue_sync_set_agc_period(srslte_ue_sync_t *q,
/* CAUTION: input_buffer MUST have space for 2 subframes */
SRSLTE_API int srslte_ue_sync_zerocopy(srslte_ue_sync_t *q,
cf_t *input_buffer[SRSLTE_MAX_PORTS]);
cf_t *input_buffer);
SRSLTE_API int srslte_ue_sync_zerocopy_multi(srslte_ue_sync_t *q,
cf_t *input_buffer[SRSLTE_MAX_PORTS]);
SRSLTE_API void srslte_ue_sync_set_cfo(srslte_ue_sync_t *q,
float cfo);

4
srslte/lib/phch/test/pdsch_pdcch_file_test.c
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@ -137,7 +137,7 @@ int base_init() {
exit(-1);
}
if (srslte_ue_dl_init(&ue_dl, cell, 1)) {
if (srslte_ue_dl_init_multi(&ue_dl, cell, 1)) {
fprintf(stderr, "Error initializing UE DL\n");
return -1;
}
@ -177,7 +177,7 @@ int main(int argc, char **argv) {
srslte_filesource_read(&fsrc, input_buffer, flen);
INFO("Reading %d samples sub-frame %d\n", flen, sf_idx);
ret = srslte_ue_dl_decode(&ue_dl, &input_buffer, data, sf_idx);
ret = srslte_ue_dl_decode(&ue_dl, input_buffer, data, sf_idx);
if(ret > 0) {
printf("PDSCH Decoded OK!\n");
} else if (ret == 0) {

4
srslte/lib/rf/rf_utils.c
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@ -103,7 +103,7 @@ int rf_mib_decoder(srslte_rf_t *rf, uint32_t nof_rx_antennas,cell_search_cfg_t *
srslte_ue_mib_sync_t ue_mib;
uint8_t bch_payload[SRSLTE_BCH_PAYLOAD_LEN];
if (srslte_ue_mib_sync_init(&ue_mib, cell->id, cell->cp, srslte_rf_recv_wrapper_cs, nof_rx_antennas, (void*) rf)) {
if (srslte_ue_mib_sync_init_multi(&ue_mib, cell->id, cell->cp, srslte_rf_recv_wrapper_cs, nof_rx_antennas, (void*) rf)) {
fprintf(stderr, "Error initiating srslte_ue_mib_sync\n");
goto clean_exit;
}
@ -164,7 +164,7 @@ int rf_cell_search(srslte_rf_t *rf, uint32_t nof_rx_antennas,
bzero(found_cells, 3*sizeof(srslte_ue_cellsearch_result_t));
if (srslte_ue_cellsearch_init(&cs, config->max_frames_pss, srslte_rf_recv_wrapper_cs, nof_rx_antennas, (void*) rf)) {
if (srslte_ue_cellsearch_init_multi(&cs, config->max_frames_pss, srslte_rf_recv_wrapper_cs, nof_rx_antennas, (void*) rf)) {
fprintf(stderr, "Error initiating UE cell detect\n");
return SRSLTE_ERROR;
}

57
srslte/lib/ue/ue_cell_search.c
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@ -36,6 +36,59 @@
#include "srslte/utils/vector.h"
int srslte_ue_cellsearch_init(srslte_ue_cellsearch_t * q, uint32_t max_frames,
int (recv_callback)(void*, void*, uint32_t,srslte_timestamp_t*),
void *stream_handler)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
if (q != NULL) {
ret = SRSLTE_ERROR;
srslte_cell_t cell;
bzero(q, sizeof(srslte_ue_cellsearch_t));
bzero(&cell, sizeof(srslte_cell_t));
cell.id = SRSLTE_CELL_ID_UNKNOWN;
cell.nof_prb = SRSLTE_CS_NOF_PRB;
if (srslte_ue_sync_init(&q->ue_sync, cell, recv_callback, stream_handler)) {
fprintf(stderr, "Error initiating ue_sync\n");
goto clean_exit;
}
q->sf_buffer[0] = srslte_vec_malloc(3*sizeof(cf_t)*SRSLTE_SF_LEN_PRB(100));
q->nof_rx_antennas = 1;
q->candidates = calloc(sizeof(srslte_ue_cellsearch_result_t), max_frames);
if (!q->candidates) {
perror("malloc");
goto clean_exit;
}
q->mode_ntimes = calloc(sizeof(uint32_t), max_frames);
if (!q->mode_ntimes) {
perror("malloc");
goto clean_exit;
}
q->mode_counted = calloc(sizeof(uint8_t), max_frames);
if (!q->mode_counted) {
perror("malloc");
goto clean_exit;
}
q->max_frames = max_frames;
q->nof_valid_frames = max_frames;
ret = SRSLTE_SUCCESS;
}
clean_exit:
if (ret == SRSLTE_ERROR) {
srslte_ue_cellsearch_free(q);
}
return ret;
}
int srslte_ue_cellsearch_init_multi(srslte_ue_cellsearch_t * q, uint32_t max_frames,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t,srslte_timestamp_t*),
uint32_t nof_rx_antennas,
void *stream_handler)
@ -52,7 +105,7 @@ int srslte_ue_cellsearch_init(srslte_ue_cellsearch_t * q, uint32_t max_frames,
cell.id = SRSLTE_CELL_ID_UNKNOWN;
cell.nof_prb = SRSLTE_CS_NOF_PRB;
if (srslte_ue_sync_init(&q->ue_sync, cell, recv_callback, nof_rx_antennas, stream_handler)) {
if (srslte_ue_sync_init_multi(&q->ue_sync, cell, recv_callback, nof_rx_antennas, stream_handler)) {
fprintf(stderr, "Error initiating ue_sync\n");
goto clean_exit;
}
@ -226,7 +279,7 @@ int srslte_ue_cellsearch_scan_N_id_2(srslte_ue_cellsearch_t * q,
srslte_ue_sync_reset(&q->ue_sync);
do {
ret = srslte_ue_sync_zerocopy(&q->ue_sync, q->sf_buffer);
ret = srslte_ue_sync_zerocopy_multi(&q->ue_sync, q->sf_buffer);
if (ret < 0) {
fprintf(stderr, "Error calling srslte_ue_sync_work()\n");
break;

87
srslte/lib/ue/ue_dl.c
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@ -44,10 +44,15 @@ const uint32_t nof_ue_formats = 2;
static srslte_dci_format_t common_formats[] = {SRSLTE_DCI_FORMAT1A,SRSLTE_DCI_FORMAT1C};
const uint32_t nof_common_formats = 2;
int srslte_ue_dl_init(srslte_ue_dl_t *q,
srslte_cell_t cell,
uint32_t nof_rx_antennas)
srslte_cell_t cell)
{
return srslte_ue_dl_init_multi(q, cell, 1);
}
int srslte_ue_dl_init_multi(srslte_ue_dl_t *q,
srslte_cell_t cell,
uint32_t nof_rx_antennas)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
@ -107,20 +112,25 @@ int srslte_ue_dl_init(srslte_ue_dl_t *q,
srslte_cfo_set_tol(&q->sfo_correct, 1e-5/q->fft.symbol_sz);
for (int j=0;j<nof_rx_antennas;j++) {
q->sf_symbols[j] = srslte_vec_malloc(CURRENT_SFLEN_RE * sizeof(cf_t));
if (!q->sf_symbols[j]) {
q->sf_symbols_m[j] = srslte_vec_malloc(CURRENT_SFLEN_RE * sizeof(cf_t));
if (!q->sf_symbols_m[j]) {
perror("malloc");
goto clean_exit;
}
for (uint32_t i=0;i<q->cell.nof_ports;i++) {
q->ce[i][j] = srslte_vec_malloc(CURRENT_SFLEN_RE * sizeof(cf_t));
if (!q->ce[i][j]) {
q->ce_m[i][j] = srslte_vec_malloc(CURRENT_SFLEN_RE * sizeof(cf_t));
if (!q->ce_m[i][j]) {
perror("malloc");
goto clean_exit;
}
}
}
q->sf_symbols = q->sf_symbols_m[0];
for (int i=0;i<q->cell.nof_ports;i++) {
q->ce[i] = q->ce_m[i][0];
}
ret = SRSLTE_SUCCESS;
} else {
fprintf(stderr, "Invalid cell properties: Id=%d, Ports=%d, PRBs=%d\n",
@ -146,12 +156,12 @@ void srslte_ue_dl_free(srslte_ue_dl_t *q) {
srslte_cfo_free(&q->sfo_correct);
srslte_softbuffer_rx_free(&q->softbuffer);
for (int j=0;j<q->nof_rx_antennas;j++) {
if (q->sf_symbols[j]) {
free(q->sf_symbols[j]);
if (q->sf_symbols_m[j]) {
free(q->sf_symbols_m[j]);
}
for (uint32_t i=0;i<q->cell.nof_ports;i++) {
if (q->ce[i][j]) {
free(q->ce[i][j]);
if (q->ce_m[i][j]) {
free(q->ce_m[i][j]);
}
}
}
@ -193,23 +203,37 @@ 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()
* - 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, uint32_t tti) {
return srslte_ue_dl_decode_rnti(q, input, data, tti, q->current_rnti);
int srslte_ue_dl_decode(srslte_ue_dl_t *q, cf_t *input, uint8_t *data, uint32_t tti) {
cf_t *_input[SRSLTE_MAX_PORTS];
_input[0] = input;
return srslte_ue_dl_decode_rnti_multi(q, _input, data, tti, q->current_rnti);
}
int srslte_ue_dl_decode_multi(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint8_t *data, uint32_t tti) {
return srslte_ue_dl_decode_rnti_multi(q, input, data, tti, q->current_rnti);
}
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, cf_t *input, uint32_t sf_idx, uint32_t *cfi)
{
cf_t *_input[SRSLTE_MAX_PORTS];
_input[0] = input;
return srslte_ue_dl_decode_fft_estimate_multi(q, _input, sf_idx, cfi);
}
int srslte_ue_dl_decode_fft_estimate_multi(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(&q->fft, input[j], q->sf_symbols[j]);
srslte_ofdm_rx_sf(&q->fft, input[j], q->sf_symbols_m[j]);
/* Correct SFO multiplying by complex exponential in the time domain */
if (q->sample_offset) {
for (int i=0;i<2*SRSLTE_CP_NSYMB(q->cell.cp);i++) {
srslte_cfo_correct(&q->sfo_correct,
&q->sf_symbols[j][i*q->cell.nof_prb*SRSLTE_NRE],
&q->sf_symbols[j][i*q->cell.nof_prb*SRSLTE_NRE],
&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.symbol_sz);
}
}
@ -225,10 +249,10 @@ int srslte_ue_dl_decode_estimate(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t *c
if (q && cfi && sf_idx < SRSLTE_NSUBFRAMES_X_FRAME) {
/* Get channel estimates for each port */
srslte_chest_dl_estimate_multi(&q->chest, q->sf_symbols, q->ce, sf_idx, q->nof_rx_antennas);
srslte_chest_dl_estimate_multi(&q->chest, q->sf_symbols_m, q->ce_m, sf_idx, q->nof_rx_antennas);
/* First decode PCFICH and obtain CFI */
if (srslte_pcfich_decode_multi(&q->pcfich, q->sf_symbols, q->ce,
if (srslte_pcfich_decode_multi(&q->pcfich, q->sf_symbols_m, q->ce_m,
srslte_chest_dl_get_noise_estimate(&q->chest),
sf_idx, cfi, &cfi_corr)<0) {
fprintf(stderr, "Error decoding PCFICH\n");
@ -254,7 +278,14 @@ int srslte_ue_dl_cfg_grant(srslte_ue_dl_t *q, srslte_ra_dl_grant_t *grant, uint3
return srslte_pdsch_cfg(&q->pdsch_cfg, q->cell, grant, cfi, sf_idx, rvidx);
}
int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint8_t *data, uint32_t tti, uint16_t rnti)
int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input, uint8_t *data, uint32_t tti, uint16_t rnti)
{
cf_t *_input[SRSLTE_MAX_PORTS];
_input[0] = input;
return srslte_ue_dl_decode_rnti_multi(q, _input, data, tti, rnti);
}
int srslte_ue_dl_decode_rnti_multi(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], uint8_t *data, uint32_t tti, uint16_t rnti)
{
srslte_dci_msg_t dci_msg;
srslte_ra_dl_dci_t dci_unpacked;
@ -264,7 +295,7 @@ int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], u
uint32_t sf_idx = tti%10;
if ((ret = srslte_ue_dl_decode_fft_estimate(q, input, sf_idx, &cfi)) < 0) {
if ((ret = srslte_ue_dl_decode_fft_estimate_multi(q, input, sf_idx, &cfi)) < 0) {
return ret;
}
@ -272,7 +303,7 @@ int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], u
// Uncoment next line to do ZF by default in pdsch_ue example
//float noise_estimate = 0;
if (srslte_pdcch_extract_llr_multi(&q->pdcch, q->sf_symbols, q->ce, noise_estimate, sf_idx, cfi)) {
if (srslte_pdcch_extract_llr_multi(&q->pdcch, q->sf_symbols_m, q->ce_m, noise_estimate, sf_idx, cfi)) {
fprintf(stderr, "Error extracting LLRs\n");
return SRSLTE_ERROR;
}
@ -310,7 +341,7 @@ int srslte_ue_dl_decode_rnti(srslte_ue_dl_t *q, cf_t *input[SRSLTE_MAX_PORTS], u
if (q->pdsch_cfg.grant.mcs.mod > 0 && q->pdsch_cfg.grant.mcs.tbs >= 0) {
ret = srslte_pdsch_decode_multi(&q->pdsch, &q->pdsch_cfg, &q->softbuffer,
q->sf_symbols, q->ce,
q->sf_symbols_m, q->ce_m,
noise_estimate,
rnti, data);
@ -515,11 +546,11 @@ bool srslte_ue_dl_decode_phich(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t n_pr
cf_t *ce0[SRSLTE_MAX_PORTS];
for (int i=0;i<SRSLTE_MAX_PORTS;i++) {
ce0[i] = q->ce[i][0];
ce0[i] = q->ce_m[i][0];
}
if (!srslte_phich_decode(&q->phich, q->sf_symbols[0], ce0, 0, ngroup, nseq, sf_idx, &ack_bit, &distance)) {
if (!srslte_phich_decode(&q->phich, q->sf_symbols_m[0], ce0, 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");
@ -533,11 +564,11 @@ bool srslte_ue_dl_decode_phich(srslte_ue_dl_t *q, uint32_t sf_idx, uint32_t n_pr
}
void srslte_ue_dl_save_signal(srslte_ue_dl_t *q, srslte_softbuffer_rx_t *softbuffer, uint32_t tti, uint32_t rv_idx, uint16_t rnti, uint32_t cfi) {
srslte_vec_save_file("sf_symbols", q->sf_symbols, SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp)*sizeof(cf_t));
srslte_vec_save_file("sf_symbols", q->sf_symbols_m, SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp)*sizeof(cf_t));
printf("%d samples\n", SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp));
srslte_vec_save_file("ce0", q->ce[0], SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp)*sizeof(cf_t));
srslte_vec_save_file("ce0", q->ce_m[0], SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp)*sizeof(cf_t));
if (q->cell.nof_ports > 1) {
srslte_vec_save_file("ce1", q->ce[1], SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp)*sizeof(cf_t));
srslte_vec_save_file("ce1", q->ce_m[1], SRSLTE_SF_LEN_RE(q->cell.nof_prb, q->cell.cp)*sizeof(cf_t));
}
srslte_vec_save_file("pcfich_ce0", q->pcfich.ce[0], q->pcfich.nof_symbols*sizeof(cf_t));
srslte_vec_save_file("pcfich_ce1", q->pcfich.ce[1], q->pcfich.nof_symbols*sizeof(cf_t));

39
srslte/lib/ue/ue_mib.c
Unescape Escape View File

@ -161,13 +161,10 @@ int srslte_ue_mib_decode(srslte_ue_mib_t * q, cf_t *input,
return ret;
}
int srslte_ue_mib_sync_init(srslte_ue_mib_sync_t *q,
uint32_t cell_id,
srslte_cp_t cp,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t*),
uint32_t nof_rx_antennas,
int (recv_callback)(void*, void*, uint32_t, srslte_timestamp_t*),
void *stream_handler)
{
srslte_cell_t cell;
@ -177,6 +174,36 @@ int srslte_ue_mib_sync_init(srslte_ue_mib_sync_t *q,
cell.cp = cp;
cell.nof_prb = SRSLTE_UE_MIB_NOF_PRB;
q->sf_buffer[0] = srslte_vec_malloc(3*sizeof(cf_t)*SRSLTE_SF_LEN_PRB(cell.nof_prb));
q->nof_rx_antennas = 1;
if (srslte_ue_mib_init(&q->ue_mib, cell)) {
fprintf(stderr, "Error initiating ue_mib\n");
return SRSLTE_ERROR;
}
if (srslte_ue_sync_init(&q->ue_sync, cell, recv_callback, stream_handler)) {
fprintf(stderr, "Error initiating ue_sync\n");
srslte_ue_mib_free(&q->ue_mib);
return SRSLTE_ERROR;
}
srslte_ue_sync_decode_sss_on_track(&q->ue_sync, true);
return SRSLTE_SUCCESS;
}
int srslte_ue_mib_sync_init_multi(srslte_ue_mib_sync_t *q,
uint32_t cell_id,
srslte_cp_t cp,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t, srslte_timestamp_t*),
uint32_t nof_rx_antennas,
void *stream_handler)
{
srslte_cell_t cell;
// If the ports are set to 0, ue_mib goes through 1, 2 and 4 ports to blindly detect nof_ports
cell.nof_ports = 0;
cell.id = cell_id;
cell.cp = cp;
cell.nof_prb = SRSLTE_UE_MIB_NOF_PRB;
for (int i=0;i<nof_rx_antennas;i++) {
q->sf_buffer[i] = srslte_vec_malloc(3*sizeof(cf_t)*SRSLTE_SF_LEN_PRB(cell.nof_prb));
}
@ -186,7 +213,7 @@ int srslte_ue_mib_sync_init(srslte_ue_mib_sync_t *q,
fprintf(stderr, "Error initiating ue_mib\n");
return SRSLTE_ERROR;
}
if (srslte_ue_sync_init(&q->ue_sync, cell, recv_callback, nof_rx_antennas, stream_handler)) {
if (srslte_ue_sync_init_multi(&q->ue_sync, cell, recv_callback, nof_rx_antennas, stream_handler)) {
fprintf(stderr, "Error initiating ue_sync\n");
srslte_ue_mib_free(&q->ue_mib);
return SRSLTE_ERROR;
@ -226,7 +253,7 @@ int srslte_ue_mib_sync_decode(srslte_ue_mib_sync_t * q,
ret = SRSLTE_SUCCESS;
do {
mib_ret = SRSLTE_UE_MIB_NOTFOUND;
ret = srslte_ue_sync_zerocopy(&q->ue_sync, q->sf_buffer);
ret = srslte_ue_sync_zerocopy_multi(&q->ue_sync, q->sf_buffer);
if (ret < 0) {
fprintf(stderr, "Error calling srslte_ue_sync_work()\n");
break;

27
srslte/lib/ue/ue_sync.c
Unescape Escape View File

@ -106,11 +106,26 @@ int srslte_ue_sync_start_agc(srslte_ue_sync_t *q, double (set_gain_callback)(voi
return n;
}
int recv_callback_multi_to_single(void *h, cf_t *x[SRSLTE_MAX_PORTS], uint32_t nsamples, srslte_timestamp_t*t)
{
srslte_ue_sync_t *q = (srslte_ue_sync_t*) h;
return q->recv_callback_single(q->stream, (void*) x[0], nsamples, t);
}
int srslte_ue_sync_init(srslte_ue_sync_t *q,
srslte_cell_t cell,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t,srslte_timestamp_t*),
uint32_t nof_rx_antennas,
int (recv_callback)(void*, void*, uint32_t,srslte_timestamp_t*),
void *stream_handler)
{
q->recv_callback_single = recv_callback;
return srslte_ue_sync_init_multi(q, cell, recv_callback_multi_to_single, 1, q);
}
int srslte_ue_sync_init_multi(srslte_ue_sync_t *q,
srslte_cell_t cell,
int (recv_callback)(void*, cf_t*[SRSLTE_MAX_PORTS], uint32_t,srslte_timestamp_t*),
uint32_t nof_rx_antennas,
void *stream_handler)
{
int ret = SRSLTE_ERROR_INVALID_INPUTS;
@ -459,8 +474,14 @@ static int receive_samples(srslte_ue_sync_t *q, cf_t *input_buffer[SRSLTE_MAX_PO
bool first_track = true;
int srslte_ue_sync_zerocopy(srslte_ue_sync_t *q, cf_t *input_buffer) {
cf_t *_input_buffer[SRSLTE_MAX_PORTS];
_input_buffer[0] = input_buffer;
return srslte_ue_sync_zerocopy_multi(q, _input_buffer);
}
/* Returns 1 if the subframe is synchronized in time, 0 otherwise */
int srslte_ue_sync_zerocopy(srslte_ue_sync_t *q, cf_t *input_buffer[SRSLTE_MAX_PORTS]) {
int srslte_ue_sync_zerocopy_multi(srslte_ue_sync_t *q, cf_t *input_buffer[SRSLTE_MAX_PORTS]) {
int ret = SRSLTE_ERROR_INVALID_INPUTS;
uint32_t track_idx;

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