int srslte_ue_dl_init(srslte_ue_dl_t *q, srslte_cell_t cell) { int ret = SRSLTE_ERROR_INVALID_INPUTS; if (q != NULL && srslte_cell_isvalid(&cell)) { ret = SRSLTE_ERROR; bzero(q, sizeof(srslte_ue_dl_t)); q->cell = cell; q->pkt_errors = 0; q->pkts_total = 0; q->pending_ul_dci_rnti = 0; q->sample_offset = 0; if (srslte_ofdm_rx_init(&q->fft, q->cell.cp, q->cell.nof_prb)) { fprintf(stderr, "Error initiating FFT\n"); goto clean_exit; } if (srslte_chest_dl_init(&q->chest, cell)) { fprintf(stderr, "Error initiating channel estimator\n"); goto clean_exit; } if (srslte_regs_init(&q->regs, q->cell)) { fprintf(stderr, "Error initiating REGs\n"); goto clean_exit; } if (srslte_pcfich_init(&q->pcfich, &q->regs, q->cell)) { fprintf(stderr, "Error creating PCFICH object\n"); goto clean_exit; } if (srslte_phich_init(&q->phich, &q->regs, q->cell)) { fprintf(stderr, "Error creating PHICH object\n"); goto clean_exit; } if (srslte_pdcch_init(&q->pdcch, &q->regs, q->cell)) { fprintf(stderr, "Error creating PDCCH object\n"); goto clean_exit; } if (srslte_pdsch_init(&q->pdsch, q->cell)) { fprintf(stderr, "Error creating PDSCH object\n"); goto clean_exit; } if (srslte_softbuffer_rx_init(&q->softbuffer, q->cell.nof_prb)) { fprintf(stderr, "Error initiating soft buffer\n"); goto clean_exit; } if (srslte_cfo_init(&q->sfo_correct, q->cell.nof_prb*SRSLTE_NRE)) { fprintf(stderr, "Error initiating SFO correct\n"); goto clean_exit; } srslte_cfo_set_tol(&q->sfo_correct, 1e-5/q->fft.symbol_sz); q->sf_symbols = srslte_vec_malloc(CURRENT_SFLEN_RE * sizeof(cf_t)); if (!q->sf_symbols) { perror("malloc"); goto clean_exit; } for (uint32_t i=0;i<q->cell.nof_ports;i++) { q->ce[i] = srslte_vec_malloc(CURRENT_SFLEN_RE * sizeof(cf_t)); if (!q->ce[i]) { perror("malloc"); goto clean_exit; } } ret = SRSLTE_SUCCESS; } else { fprintf(stderr, "Invalid cell properties: Id=%d, Ports=%d, PRBs=%d\n", cell.id, cell.nof_ports, cell.nof_prb); } clean_exit: if (ret == SRSLTE_ERROR) { srslte_ue_dl_free(q); } return ret; }
int srslte_ue_dl_init(srslte_ue_dl_t *q, cf_t *in_buffer[SRSLTE_MAX_PORTS], uint32_t max_prb, uint32_t nof_rx_antennas) { int ret = SRSLTE_ERROR_INVALID_INPUTS; if (q != NULL && nof_rx_antennas <= SRSLTE_MAX_PORTS) { ret = SRSLTE_ERROR; bzero(q, sizeof(srslte_ue_dl_t)); q->pdsch_pkt_errors = 0; q->pdsch_pkts_total = 0; q->pmch_pkt_errors = 0; q->pmch_pkts_total = 0; q->pending_ul_dci_rnti = 0; q->sample_offset = 0; q->nof_rx_antennas = nof_rx_antennas; for (int j = 0; j < SRSLTE_MAX_PORTS; j++) { q->sf_symbols_m[j] = srslte_vec_malloc(MAX_SFLEN_RE * sizeof(cf_t)); if (!q->sf_symbols_m[j]) { perror("malloc"); goto clean_exit; } for (uint32_t i=0;i<SRSLTE_MAX_PORTS;i++) { q->ce_m[i][j] = srslte_vec_malloc(MAX_SFLEN_RE * sizeof(cf_t)); if (!q->ce_m[i][j]) { perror("malloc"); goto clean_exit; } bzero(q->ce_m[i][j], MAX_SFLEN_RE * sizeof(cf_t)); } } q->sf_symbols = q->sf_symbols_m[0]; for (int i=0;i<SRSLTE_MAX_PORTS;i++) { q->ce[i] = q->ce_m[i][0]; } for (int i = 0; i < nof_rx_antennas; i++) { if (srslte_ofdm_rx_init(&q->fft[i], SRSLTE_CP_NORM, in_buffer[i], q->sf_symbols_m[i], max_prb)) { fprintf(stderr, "Error initiating FFT\n"); goto clean_exit; } } if (srslte_ofdm_rx_init_mbsfn(&q->fft_mbsfn, SRSLTE_CP_EXT, in_buffer[0], q->sf_symbols_m[0], max_prb)) { fprintf(stderr, "Error initiating FFT for MBSFN subframes \n"); goto clean_exit; } srslte_ofdm_set_non_mbsfn_region(&q->fft_mbsfn, 2); // Set a default to init if (srslte_chest_dl_init(&q->chest, max_prb)) { fprintf(stderr, "Error initiating channel estimator\n"); goto clean_exit; } if (srslte_pcfich_init(&q->pcfich, nof_rx_antennas)) { fprintf(stderr, "Error creating PCFICH object\n"); goto clean_exit; } if (srslte_phich_init(&q->phich, nof_rx_antennas)) { fprintf(stderr, "Error creating PHICH object\n"); goto clean_exit; } if (srslte_pdcch_init_ue(&q->pdcch, max_prb, nof_rx_antennas)) { fprintf(stderr, "Error creating PDCCH object\n"); goto clean_exit; } if (srslte_pdsch_init_ue(&q->pdsch, max_prb, nof_rx_antennas)) { fprintf(stderr, "Error creating PDSCH object\n"); goto clean_exit; } if (srslte_pmch_init_multi(&q->pmch, max_prb, nof_rx_antennas)) { fprintf(stderr, "Error creating PMCH object\n"); goto clean_exit; } for (int i = 0; i < SRSLTE_MAX_TB; i++) { q->softbuffers[i] = srslte_vec_malloc(sizeof(srslte_softbuffer_rx_t)); if (!q->softbuffers[i]) { fprintf(stderr, "Error allocating soft buffer\n"); goto clean_exit; } if (srslte_softbuffer_rx_init(q->softbuffers[i], max_prb)) { fprintf(stderr, "Error initiating soft buffer\n"); goto clean_exit; } } if (srslte_cfo_init(&q->sfo_correct, max_prb*SRSLTE_NRE)) { fprintf(stderr, "Error initiating SFO correct\n"); goto clean_exit; } srslte_cfo_set_tol(&q->sfo_correct, 1e-5f/q->fft[0].symbol_sz); ret = SRSLTE_SUCCESS; } else { fprintf(stderr, "Invalid parametres\n"); } clean_exit: if (ret == SRSLTE_ERROR) { srslte_ue_dl_free(q); } return ret; }
void srslte_sync_set_cfo_tol(srslte_sync_t *q, float tol) { q->current_cfo_tol = tol; srslte_cfo_set_tol(&q->cfo_corr_frame, tol/(15000.0*q->fft_size)); srslte_cfo_set_tol(&q->cfo_corr_symbol, tol/(15000.0*q->fft_size)); }
int srslte_ue_dl_set_cell(srslte_ue_dl_t *q, srslte_cell_t cell) { int ret = SRSLTE_ERROR_INVALID_INPUTS; if (q != NULL && srslte_cell_isvalid(&cell)) { q->pkt_errors = 0; q->pkts_total = 0; q->pending_ul_dci_rnti = 0; q->sample_offset = 0; if (q->cell.id != cell.id || q->cell.nof_prb == 0) { if (q->cell.nof_prb != 0) { srslte_regs_free(&q->regs); } memcpy(&q->cell, &cell, sizeof(srslte_cell_t)); if (srslte_regs_init(&q->regs, q->cell)) { fprintf(stderr, "Error resizing REGs\n"); return SRSLTE_ERROR; } if (srslte_cfo_resize(&q->sfo_correct, q->cell.nof_prb*SRSLTE_NRE)) { fprintf(stderr, "Error resizing SFO correct\n"); return SRSLTE_ERROR; } srslte_cfo_set_tol(&q->sfo_correct, 1e-5f/q->fft[0].symbol_sz); for (int port = 0; port < q->nof_rx_antennas; port++) { if (srslte_ofdm_rx_set_prb(&q->fft[port], q->cell.cp, q->cell.nof_prb)) { fprintf(stderr, "Error resizing FFT\n"); return SRSLTE_ERROR; } } if (srslte_chest_dl_set_cell(&q->chest, q->cell)) { fprintf(stderr, "Error resizing channel estimator\n"); return SRSLTE_ERROR; } if (srslte_pcfich_set_cell(&q->pcfich, &q->regs, q->cell)) { fprintf(stderr, "Error resizing PCFICH object\n"); return SRSLTE_ERROR; } if (srslte_phich_set_cell(&q->phich, &q->regs, q->cell)) { fprintf(stderr, "Error resizing PHICH object\n"); return SRSLTE_ERROR; } if (srslte_pdcch_set_cell(&q->pdcch, &q->regs, q->cell)) { fprintf(stderr, "Error resizing PDCCH object\n"); return SRSLTE_ERROR; } if (srslte_pdsch_set_cell(&q->pdsch, q->cell)) { fprintf(stderr, "Error creating PDSCH object\n"); return SRSLTE_ERROR; } q->current_rnti = 0; } ret = SRSLTE_SUCCESS; } else { fprintf(stderr, "Invalid cell properties ue_dl: Id=%d, Ports=%d, PRBs=%d\n", cell.id, cell.nof_ports, cell.nof_prb); } return ret; }