mirror of https://github.com/PentHertz/srsLTE.git
Removed unused sample offset correction
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parent
6ca6919694
commit
c2098ad626
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@ -487,8 +487,7 @@ typedef struct {
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uint32_t cfo_ref_mask;
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bool average_subframe_enabled;
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int time_correct_period;
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bool sfo_correct_disable;
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std::string sss_algorithm;
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std::string sss_algorithm;
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float estimator_fil_w;
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bool rssi_sensor_enabled;
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bool sic_pss_enabled;
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@ -84,8 +84,6 @@ typedef struct SRSLTE_API {
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srslte_ofdm_t fft_mbsfn;
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srslte_chest_dl_t chest;
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srslte_cfo_t sfo_correct;
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srslte_pdsch_cfg_t pdsch_cfg;
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srslte_pdsch_cfg_t pmch_cfg;
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srslte_softbuffer_rx_t *softbuffers[SRSLTE_MAX_CODEWORDS];
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@ -126,8 +124,6 @@ typedef struct SRSLTE_API {
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srslte_dci_msg_t pending_ul_dci_msg;
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uint16_t pending_ul_dci_rnti;
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float sample_offset;
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float last_phich_corr;
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}srslte_ue_dl_t;
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@ -195,9 +191,6 @@ SRSLTE_API int srslte_ue_dl_find_dl_dci_type(srslte_ue_dl_t *q,
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SRSLTE_API uint32_t srslte_ue_dl_get_ncce(srslte_ue_dl_t *q);
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SRSLTE_API void srslte_ue_dl_set_sample_offset(srslte_ue_dl_t * q,
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float sample_offset);
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SRSLTE_API int srslte_ue_dl_decode(srslte_ue_dl_t *q,
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uint8_t *data[SRSLTE_MAX_CODEWORDS],
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uint32_t tm,
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@ -71,7 +71,6 @@ int srslte_ue_dl_init(srslte_ue_dl_t *q,
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q->pmch_pkt_errors = 0;
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q->pmch_pkts_total = 0;
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q->pending_ul_dci_rnti = 0;
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q->sample_offset = 0;
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q->nof_rx_antennas = nof_rx_antennas;
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for (int j = 0; j < SRSLTE_MAX_PORTS; j++) {
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@ -147,12 +146,7 @@ int srslte_ue_dl_init(srslte_ue_dl_t *q,
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goto clean_exit;
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}
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}
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if (srslte_cfo_init(&q->sfo_correct, max_prb*SRSLTE_NRE)) {
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fprintf(stderr, "Error initiating SFO correct\n");
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goto clean_exit;
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}
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srslte_cfo_set_tol(&q->sfo_correct, 1e-5f/q->fft[0].symbol_sz);
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ret = SRSLTE_SUCCESS;
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} else {
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fprintf(stderr, "Invalid parametres\n");
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@ -178,7 +172,6 @@ void srslte_ue_dl_free(srslte_ue_dl_t *q) {
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srslte_pdcch_free(&q->pdcch);
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srslte_pdsch_free(&q->pdsch);
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srslte_pmch_free(&q->pmch);
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srslte_cfo_free(&q->sfo_correct);
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for (int i = 0; i < SRSLTE_MAX_TB; i++) {
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srslte_softbuffer_rx_free(q->softbuffers[i]);
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if (q->softbuffers[i]) {
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@ -209,7 +202,6 @@ int srslte_ue_dl_set_cell(srslte_ue_dl_t *q, srslte_cell_t cell)
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q->pkt_errors = 0;
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q->pkts_total = 0;
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q->pending_ul_dci_rnti = 0;
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q->sample_offset = 0;
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if (q->cell.id != cell.id || q->cell.nof_prb == 0) {
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if (q->cell.nof_prb != 0) {
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@ -220,11 +212,6 @@ int srslte_ue_dl_set_cell(srslte_ue_dl_t *q, srslte_cell_t cell)
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fprintf(stderr, "Error resizing REGs\n");
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return SRSLTE_ERROR;
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}
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if (srslte_cfo_resize(&q->sfo_correct, q->cell.nof_prb*SRSLTE_NRE)) {
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fprintf(stderr, "Error resizing SFO correct\n");
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return SRSLTE_ERROR;
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}
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srslte_cfo_set_tol(&q->sfo_correct, 1e-5f/q->fft[0].symbol_sz);
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for (int port = 0; port < q->nof_rx_antennas; port++) {
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if (srslte_ofdm_rx_set_prb(&q->fft[port], q->cell.cp, q->cell.nof_prb)) {
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fprintf(stderr, "Error resizing FFT\n");
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@ -348,10 +335,6 @@ void srslte_ue_dl_reset(srslte_ue_dl_t *q) {
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bzero(&q->pdsch_cfg, sizeof(srslte_pdsch_cfg_t));
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}
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void srslte_ue_dl_set_sample_offset(srslte_ue_dl_t * q, float sample_offset) {
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q->sample_offset = sample_offset;
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}
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/** Applies the following operations to a subframe of synchronized samples:
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* - OFDM demodulation
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* - Channel estimation
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@ -395,17 +378,6 @@ int srslte_ue_dl_decode_fft_estimate_noguru(srslte_ue_dl_t *q, cf_t *input[SRSLT
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/* Run FFT for all subframe data */
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for (int j=0;j<q->nof_rx_antennas;j++) {
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srslte_ofdm_rx_sf_ng(&q->fft[j], input[j], q->sf_symbols_m[j]);
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/* Correct SFO multiplying by complex exponential in the time domain */
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if (q->sample_offset) {
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int nsym = SRSLTE_CP_NSYMB(q->cell.cp);
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for (int i=0;i<2*nsym;i++) {
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srslte_cfo_correct(&q->sfo_correct,
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&q->sf_symbols_m[j][i*q->cell.nof_prb*SRSLTE_NRE],
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&q->sf_symbols_m[j][i*q->cell.nof_prb*SRSLTE_NRE],
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q->sample_offset / q->fft[j].symbol_sz);
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}
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}
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}
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return srslte_ue_dl_decode_estimate_mbsfn(q, sf_idx, cfi, SRSLTE_SF_NORM);
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} else {
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@ -54,8 +54,7 @@ public:
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void set_tti(uint32_t tti, uint32_t tx_tti);
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void set_tx_time(srslte_timestamp_t tx_time, uint32_t next_offset);
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void set_cfo(float cfo);
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void set_sample_offset(float sample_offset);
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void set_ul_params(bool pregen_disabled = false);
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void set_crnti(uint16_t rnti);
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void enable_pregen_signals(bool enabled);
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@ -258,10 +258,6 @@ void parse_args(all_args_t *args, int argc, char *argv[]) {
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bpo::value<int>(&args->expert.phy.time_correct_period)->default_value(5),
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"Period for sampling time offset correction.")
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("expert.sfo_correct_disable",
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bpo::value<bool>(&args->expert.phy.sfo_correct_disable)->default_value(false),
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"Disables phase correction before channel estimation.")
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("expert.sss_algorithm",
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bpo::value<string>(&args->expert.phy.sss_algorithm)->default_value("full"),
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"Selects the SSS estimation algorithm.")
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@ -636,8 +636,6 @@ void phch_recv::run_thread()
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worker->set_cfo(ul_dl_factor * metrics.cfo / 15000);
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worker_com->set_sync_metrics(metrics);
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worker->set_sample_offset(srslte_ue_sync_get_sfo(&ue_sync)/1000);
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/* Compute TX time: Any transmission happens in TTI+4 thus advance 4 ms the reception time */
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srslte_timestamp_t rx_time, tx_time, tx_time_prach;
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srslte_ue_sync_get_last_timestamp(&ue_sync, &rx_time);
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@ -190,14 +190,6 @@ void phch_worker::set_cfo(float cfo_)
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cfo = cfo_;
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}
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void phch_worker::set_sample_offset(float sample_offset)
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{
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if (phy->args->sfo_correct_disable) {
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sample_offset = 0;
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}
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srslte_ue_dl_set_sample_offset(&ue_dl, sample_offset);
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}
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void phch_worker::set_crnti(uint16_t rnti)
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{
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srslte_ue_dl_set_rnti(&ue_dl, rnti);
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@ -97,8 +97,7 @@ void phy::set_default_args(phy_args_t *args)
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args->cfo_integer_enabled = false;
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args->cfo_correct_tol_hz = 50;
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args->time_correct_period = 5;
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args->sfo_correct_disable = false;
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args->sss_algorithm = "full";
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args->sss_algorithm = "full";
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args->estimator_fil_w = 0.1;
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}
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