int srslte_sss_synch_init(srslte_sss_synch_t *q, uint32_t fft_size) {
if (q != NULL &&
fft_size <= 2048)
{
uint32_t N_id_2;
srslte_sss_tables_t sss_tables;
bzero(q, sizeof(srslte_sss_synch_t));
if (srslte_dft_plan(&q->dftp_input, fft_size, SRSLTE_DFT_FORWARD, SRSLTE_DFT_COMPLEX)) {
srslte_sss_synch_free(q);
return SRSLTE_ERROR;
}
srslte_dft_plan_set_mirror(&q->dftp_input, true);
srslte_dft_plan_set_dc(&q->dftp_input, true);
q->fft_size = fft_size;
generate_N_id_1_table(q->N_id_1_table);
for (N_id_2=0;N_id_2<3;N_id_2++) {
generate_sss_all_tables(&sss_tables, N_id_2);
convert_tables(&q->fc_tables[N_id_2], &sss_tables);
}
q->N_id_2 = 0;
return SRSLTE_SUCCESS;
}
return SRSLTE_ERROR_INVALID_INPUTS;
}
int sss_synch_init(sss_synch_t *q) {
bzero(q, sizeof(sss_synch_t));
if (dft_plan(SSS_DFT_LEN, COMPLEX_2_COMPLEX, FORWARD, &q->dftp_input)) {
return -1;
}
generate_N_id_1_table(q->N_id_1_table);
q->dftp_input.options = DFT_MIRROR_POS | DFT_DC_OFFSET;
return 0;
}
