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srsRAN_4G
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Fixed minimal DL noise estimation defect

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master
Xavier Arteaga 7 years ago
parent 78912694c5
commit 2d3e788d19
1 changed files with 2 additions and 2 deletions
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4
lib/src/phy/ch_estimation/chest_dl.c
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@ -282,7 +282,7 @@ static float estimate_noise_pilots(srslte_chest_dl_t *q, uint32_t port_id, srslt
input2d[i + 1] = &q->pilot_estimates[i * nref]; input2d[i + 1] = &q->pilot_estimates[i * nref];
} }
input2d[0] = &q->tmp_noise[0]; input2d[0] = &q->tmp_noise[nref];
if (nsymbols > 3) { if (nsymbols > 3) {
srslte_vec_sc_prod_cfc(input2d[2], 2.0f, input2d[0], nref); srslte_vec_sc_prod_cfc(input2d[2], 2.0f, input2d[0], nref);
srslte_vec_sub_ccc(input2d[0], input2d[4], input2d[0], nref); srslte_vec_sub_ccc(input2d[0], input2d[4], input2d[0], nref);
@ -290,7 +290,7 @@ static float estimate_noise_pilots(srslte_chest_dl_t *q, uint32_t port_id, srslt
srslte_vec_sc_prod_cfc(input2d[2], 1.0f, input2d[0], nref); srslte_vec_sc_prod_cfc(input2d[2], 1.0f, input2d[0], nref);
} }
input2d[nsymbols + 1] = &q->tmp_noise[nref]; input2d[nsymbols + 1] = &q->tmp_noise[nref * 2];
if (nsymbols > 3) { if (nsymbols > 3) {
srslte_vec_sc_prod_cfc(input2d[nsymbols - 1], 2.0f, input2d[nsymbols + 1], nref); srslte_vec_sc_prod_cfc(input2d[nsymbols - 1], 2.0f, input2d[nsymbols + 1], nref);
srslte_vec_sub_ccc(input2d[nsymbols + 1], input2d[nsymbols - 3], input2d[nsymbols + 1], nref); srslte_vec_sub_ccc(input2d[nsymbols + 1], input2d[nsymbols - 3], input2d[nsymbols + 1], nref);

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