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This commit is contained in:
rmagueta
2022-04-04 14:42:37 +01:00
parent ef63aa45e6
commit c37e0af9b0
1 changed files with 16 additions and 14 deletions
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openair1/PHY/NR_UE_TRANSPORT/csi_rx.c
+16 -14
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@@ -364,9 +364,18 @@ int nr_csi_rs_ri_estimation(PHY_VARS_NR_UE *ue,
NR_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
int16_t cond_dB_threshold = 0;
int count=0;
int count = 0;
*rank_indicator = 0;
if (ue->frame_parms.nb_antennas_rx == 1 || ue->nr_csi_rs_info->N_ports == 1) {
LOG_I(NR_PHY, "RI = %i\n", *rank_indicator + 1);
return 0;
} else if( !(ue->frame_parms.nb_antennas_rx == 2 && ue->nr_csi_rs_info->N_ports == 2) ) {
LOG_W(NR_PHY, "Rank indicator computation is not implemented for %i x %i system\n",
ue->frame_parms.nb_antennas_rx, ue->nr_csi_rs_info->N_ports);
return -1;
}
/* Example 2x2: Hh x H =
* | conjch00 conjch10 | x | ch00 ch01 | = | conjch00*ch00+conjch10*ch10 conjch00*ch01+conjch10*ch11 |
* | conjch01 conjch11 | | ch10 ch11 | | conjch01*ch00+conjch11*ch10 conjch01*ch01+conjch11*ch11 |
@@ -503,19 +512,12 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
ue->nr_csi_rs_info->csi_rs_estimated_channel_freq,
ue->nr_csi_rs_info->noise_power);
if(ue->frame_parms.nb_antennas_rx == 1 || ue->nr_csi_rs_info->N_ports == 1) {
*ue->nr_csi_rs_info->rank_indicator = 0;
} else if(ue->frame_parms.nb_antennas_rx == 2 && ue->nr_csi_rs_info->N_ports == 2) {
nr_csi_rs_ri_estimation(ue,
proc,
csirs_config_pdu,
ue->nr_csi_rs_info,
ue->nr_csi_rs_info->csi_rs_estimated_channel_freq,
ue->nr_csi_rs_info->rank_indicator);
} else {
LOG_D(NR_PHY, "Rank indicator computation is not implemented for %i x %i system\n",
ue->frame_parms.nb_antennas_rx, ue->nr_csi_rs_info->N_ports);
}
nr_csi_rs_ri_estimation(ue,
proc,
csirs_config_pdu,
ue->nr_csi_rs_info,
ue->nr_csi_rs_info->csi_rs_estimated_channel_freq,
ue->nr_csi_rs_info->rank_indicator);
return 0;
}