void base_free() { int i; srslte_filesource_free(&fsrc); free(input_buffer); free(fft_buffer); srslte_filesource_free(&fsrc); for (i=0;i<cell.nof_ports;i++) { free(ce[i]); } srslte_chest_dl_free(&chest); srslte_ofdm_rx_free(&fft); srslte_pbch_free(&pbch); }
void base_free() { int i; srslte_filesource_free(&fsrc); free(input_buffer); free(fft_buffer); srslte_filesource_free(&fsrc); for (i=0;i<SRSLTE_MAX_PORTS;i++) { free(ce[i]); } srslte_chest_dl_free(&chest); srslte_ofdm_rx_free(&fft); srslte_pdcch_free(&pdcch); srslte_regs_free(®s); }
void srslte_ue_sync_free(srslte_ue_sync_t *q) { if (q->input_buffer) { free(q->input_buffer); } if (q->do_agc) { srslte_agc_free(&q->agc); } if (!q->file_mode) { srslte_sync_free(&q->sfind); srslte_sync_free(&q->strack); } else { srslte_filesource_free(&q->file_source); } bzero(q, sizeof(srslte_ue_sync_t)); }
void base_free() { srslte_filesource_free(&fsrc); srslte_ue_dl_free(&ue_dl); free(input_buffer); }
int main(int argc, char **argv) { srslte_filesource_t fsrc; cf_t *buffer; int frame_cnt, n; srslte_pss_synch_t pss; srslte_cfo_t cfocorr, cfocorr64; srslte_sss_synch_t sss; int32_t flen; int peak_idx, last_peak; float peak_value; float mean_peak; uint32_t nof_det, nof_nodet, nof_nopeak, nof_nopeakdet; cf_t ce[SRSLTE_PSS_LEN]; parse_args(argc, argv); if (N_id_2_sync == -1) { N_id_2_sync = cell_id%3; } uint32_t N_id_2 = cell_id%3; uint32_t N_id_1 = cell_id/3; #ifndef DISABLE_GRAPHICS if (!disable_plots) init_plots(); #endif flen = 4800*(fft_size/64); buffer = malloc(sizeof(cf_t) * flen * 2); if (!buffer) { perror("malloc"); exit(-1); } if (srslte_pss_synch_init_fft(&pss, flen, fft_size)) { fprintf(stderr, "Error initiating PSS\n"); exit(-1); } if (srslte_pss_synch_set_N_id_2(&pss, N_id_2_sync)) { fprintf(stderr, "Error setting N_id_2=%d\n",N_id_2_sync); exit(-1); } srslte_cfo_init(&cfocorr, flen); srslte_cfo_init(&cfocorr64, flen); if (srslte_sss_synch_init(&sss, fft_size)) { fprintf(stderr, "Error initializing SSS object\n"); return SRSLTE_ERROR; } srslte_sss_synch_set_N_id_2(&sss, N_id_2); printf("Opening file...\n"); if (srslte_filesource_init(&fsrc, input_file_name, SRSLTE_COMPLEX_FLOAT_BIN)) { fprintf(stderr, "Error opening file %s\n", input_file_name); exit(-1); } printf("N_id_2: %d\n", N_id_2); printf("Frame length %d samples\n", flen); printf("PSS detection threshold: %.2f\n", threshold); nof_det = nof_nodet = nof_nopeak = nof_nopeakdet = 0; frame_cnt = 0; last_peak = 0; mean_peak = 0; int peak_offset = 0; float cfo; float mean_cfo = 0; uint32_t m0, m1; uint32_t sss_error1 = 0, sss_error2 = 0, sss_error3 = 0; uint32_t cp_is_norm = 0; srslte_sync_t ssync; bzero(&ssync, sizeof(srslte_sync_t)); ssync.fft_size = fft_size; while(frame_cnt < nof_frames || nof_frames == -1) { n = srslte_filesource_read(&fsrc, buffer, flen - peak_offset); if (n < 0) { fprintf(stderr, "Error reading samples\n"); exit(-1); } if (n < flen - peak_offset) { fprintf(stdout, "End of file\n"); break; } peak_idx = srslte_pss_synch_find_pss(&pss, buffer, &peak_value); if (peak_idx < 0) { fprintf(stderr, "Error finding PSS peak\n"); exit(-1); } mean_peak = SRSLTE_VEC_CMA(peak_value, mean_peak, frame_cnt); if (peak_value >= threshold) { nof_det++; if (peak_idx >= fft_size) { // Estimate CFO cfo = srslte_pss_synch_cfo_compute(&pss, &buffer[peak_idx-fft_size]); mean_cfo = SRSLTE_VEC_CMA(cfo, mean_cfo, frame_cnt); // Correct CFO srslte_cfo_correct(&cfocorr, buffer, buffer, -mean_cfo / fft_size); // Estimate channel if (srslte_pss_synch_chest(&pss, &buffer[peak_idx-fft_size], ce)) { fprintf(stderr, "Error computing channel estimation\n"); exit(-1); } // Find SSS int sss_idx = peak_idx-2*fft_size-(SRSLTE_CP_ISNORM(cp)?SRSLTE_CP_LEN(fft_size, SRSLTE_CP_NORM_LEN):SRSLTE_CP_LEN(fft_size, SRSLTE_CP_EXT_LEN)); if (sss_idx >= 0 && sss_idx < flen-fft_size) { srslte_sss_synch_m0m1_partial(&sss, &buffer[sss_idx], 3, NULL, &m0, &m0_value, &m1, &m1_value); if (srslte_sss_synch_N_id_1(&sss, m0, m1) != N_id_1) { sss_error2++; } INFO("Partial N_id_1: %d\n", srslte_sss_synch_N_id_1(&sss, m0, m1)); srslte_sss_synch_m0m1_diff(&sss, &buffer[sss_idx], &m0, &m0_value, &m1, &m1_value); if (srslte_sss_synch_N_id_1(&sss, m0, m1) != N_id_1) { sss_error3++; } INFO("Diff N_id_1: %d\n", srslte_sss_synch_N_id_1(&sss, m0, m1)); srslte_sss_synch_m0m1_partial(&sss, &buffer[sss_idx], 1, NULL, &m0, &m0_value, &m1, &m1_value); if (srslte_sss_synch_N_id_1(&sss, m0, m1) != N_id_1) { sss_error1++; } INFO("Full N_id_1: %d\n", srslte_sss_synch_N_id_1(&sss, m0, m1)); } // Estimate CP if (peak_idx > 2*(fft_size + SRSLTE_CP_LEN_EXT(fft_size))) { srslte_cp_t cp = srslte_sync_detect_cp(&ssync, buffer, peak_idx); if (SRSLTE_CP_ISNORM(cp)) { cp_is_norm++; } } } else { INFO("No space for CFO computation. Frame starts at \n",peak_idx); } if(srslte_sss_synch_subframe(m0,m1) == 0) { #ifndef DISABLE_GRAPHICS if (!disable_plots) do_plots_sss(sss.corr_output_m0, sss.corr_output_m1); #endif } } else { nof_nodet++; } if (frame_cnt > 100) { if (abs(last_peak-peak_idx) > 4) { if (peak_value >= threshold) { nof_nopeakdet++; } nof_nopeak++; } } frame_cnt++; printf("[%5d]: Pos: %5d, PSR: %4.1f (~%4.1f) Pdet: %4.2f, " "FA: %4.2f, CFO: %+4.1f KHz SSSmiss: %4.2f/%4.2f/%4.2f CPNorm: %.0f%%\r", frame_cnt, peak_idx, peak_value, mean_peak, (float) nof_det/frame_cnt, (float) nof_nopeakdet/frame_cnt, mean_cfo*15, (float) sss_error1/nof_det,(float) sss_error2/nof_det,(float) sss_error3/nof_det, (float) cp_is_norm/nof_det * 100); if (SRSLTE_VERBOSE_ISINFO()) { printf("\n"); } usleep(10000); #ifndef DISABLE_GRAPHICS if (!disable_plots) do_plots(pss.conv_output_avg, pss.conv_output_avg[peak_idx], pss.fft_size+pss.frame_size-1, ce); #endif last_peak = peak_idx; } srslte_pss_synch_free(&pss); free(buffer); srslte_filesource_free(&fsrc); #ifndef DISABLE_GRAPHICS if (!disable_plots) destroy_plots(); #endif printf("Ok\n"); exit(0); }