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srsRAN_4G
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added a normalization factor

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master
Francisco Paisana 7 years ago committed by Xavier Arteaga
parent 22c0a67b97
commit 337857df5f
1 changed files with 2 additions and 2 deletions
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4
lib/src/phy/enb/enb_dl.c
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@ -388,7 +388,7 @@ void srslte_enb_dl_put_mbsfn_base(srslte_enb_dl_t *q, uint32_t tti)
void srslte_enb_dl_gen_signal(srslte_enb_dl_t *q) void srslte_enb_dl_gen_signal(srslte_enb_dl_t *q)
{ {
// TODO: PAPR control // TODO: PAPR control
float norm_factor = (float) sqrt(q->cell.nof_prb)/15/sqrt(q->ifft[0].symbol_sz); float norm_factor = 0.05f / sqrt(q->cell.nof_prb);
for (int i = 0; i < q->cell.nof_ports; i++) { for (int i = 0; i < q->cell.nof_ports; i++) {
srslte_ofdm_tx_sf(&q->ifft[i]); srslte_ofdm_tx_sf(&q->ifft[i]);
srslte_vec_sc_prod_cfc(q->ifft[i].out_buffer, norm_factor, q->ifft[i].out_buffer, (uint32_t) SRSLTE_SF_LEN_PRB(q->cell.nof_prb)); srslte_vec_sc_prod_cfc(q->ifft[i].out_buffer, norm_factor, q->ifft[i].out_buffer, (uint32_t) SRSLTE_SF_LEN_PRB(q->cell.nof_prb));
@ -397,7 +397,7 @@ void srslte_enb_dl_gen_signal(srslte_enb_dl_t *q)
void srslte_enb_dl_gen_signal_mbsfn(srslte_enb_dl_t *q) void srslte_enb_dl_gen_signal_mbsfn(srslte_enb_dl_t *q)
{ {
float norm_factor = (float) sqrt(q->cell.nof_prb)/15/sqrt(q->ifft_mbsfn.symbol_sz); float norm_factor = 0.05f / sqrt(q->cell.nof_prb);
srslte_ofdm_tx_sf(&q->ifft_mbsfn); srslte_ofdm_tx_sf(&q->ifft_mbsfn);
srslte_vec_sc_prod_cfc(q->ifft_mbsfn.out_buffer, norm_factor, q->ifft_mbsfn.out_buffer, (uint32_t) SRSLTE_SF_LEN_PRB(q->cell.nof_prb)); srslte_vec_sc_prod_cfc(q->ifft_mbsfn.out_buffer, norm_factor, q->ifft_mbsfn.out_buffer, (uint32_t) SRSLTE_SF_LEN_PRB(q->cell.nof_prb));
} }

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