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srsLTE
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Added API to access port/ant chest values

This commit is contained in:
Ismael Gomez 2017-12-20 10:37:36 +01:00
parent dfda8edc04
commit ba7d4ca3a4
2 changed files with 35 additions and 5 deletions
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18
lib/include/srslte/phy/ch_estimation/chest_dl.h
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@ -157,16 +157,32 @@ SRSLTE_API void srslte_chest_dl_cfo_estimate_enable(srslte_chest_dl_t *q,
SRSLTE_API void srslte_chest_dl_average_subframe(srslte_chest_dl_t *q,
bool enable);
SRSLTE_API float srslte_chest_dl_get_noise_estimate(srslte_chest_dl_t *q);
SRSLTE_API float srslte_chest_dl_get_noise_estimate(srslte_chest_dl_t *q);
SRSLTE_API float srslte_chest_dl_get_noise_estimate_ant_port(srslte_chest_dl_t *q,
uint32_t ant_idx,
uint32_t port_idx);
SRSLTE_API float srslte_chest_dl_get_cfo(srslte_chest_dl_t *q);
SRSLTE_API float srslte_chest_dl_get_snr(srslte_chest_dl_t *q);
SRSLTE_API float srslte_chest_dl_get_snr_ant_port(srslte_chest_dl_t *q,
uint32_t ant_idx,
uint32_t port_idx);
SRSLTE_API float srslte_chest_dl_get_rssi(srslte_chest_dl_t *q);
SRSLTE_API float srslte_chest_dl_get_rsrq(srslte_chest_dl_t *q);
SRSLTE_API float srslte_chest_dl_get_rsrq_ant_port(srslte_chest_dl_t *q,
uint32_t ant_idx,
uint32_t port);
SRSLTE_API float srslte_chest_dl_get_rsrp_ant_port(srslte_chest_dl_t *q,
uint32_t ant_idx,
uint32_t port);
SRSLTE_API float srslte_chest_dl_get_rsrp_port(srslte_chest_dl_t *q,
uint32_t port);

22
lib/src/phy/ch_estimation/chest_dl.c
View File

@ -498,10 +498,7 @@ void chest_interpolate_noise_est(srslte_chest_dl_t *q, cf_t *input, cf_t *ce, ui
uint32_t npilots = SRSLTE_REFSIGNAL_NUM_SF(q->cell.nof_prb, port_id);
float energy = cabsf(srslte_vec_acc_cc(q->pilot_estimates, npilots)/npilots);
q->rsrp[rxant_id][port_id] = energy*energy;
if (port_id == 0) {
/* compute rssi only for port 0 */
q->rssi[rxant_id][port_id] = srslte_chest_dl_rssi(q, input, port_id);
}
q->rssi[rxant_id][port_id] = srslte_chest_dl_rssi(q, input, port_id);
}
int srslte_chest_dl_estimate_port(srslte_chest_dl_t *q, cf_t *input, cf_t *ce, uint32_t sf_idx, uint32_t port_id, uint32_t rxant_id)
@ -599,6 +596,10 @@ float srslte_chest_dl_get_noise_estimate(srslte_chest_dl_t *q) {
return n/q->last_nof_antennas;
}
float srslte_chest_dl_get_noise_estimate_ant_port(srslte_chest_dl_t *q, uint32_t ant_idx, uint32_t port_idx) {
return q->noise_estimate[ant_idx][port_idx];
}
float srslte_chest_dl_get_snr(srslte_chest_dl_t *q) {
#ifdef FREQ_SEL_SNR
int nref=SRSLTE_REFSIGNAL_NUM_SF(q->cell.nof_prb, 0);
@ -608,6 +609,11 @@ float srslte_chest_dl_get_snr(srslte_chest_dl_t *q) {
#endif
}
float srslte_chest_dl_get_snr_ant_port(srslte_chest_dl_t *q, uint32_t ant_idx, uint32_t port_idx) {
return srslte_chest_dl_get_rsrp_ant_port(q, ant_idx, port_idx)/srslte_chest_dl_get_noise_estimate_ant_port(q, ant_idx, port_idx);
}
float srslte_chest_dl_get_rssi(srslte_chest_dl_t *q) {
float n = 0;
for (int i=0;i<q->last_nof_antennas;i++) {
@ -628,6 +634,14 @@ float srslte_chest_dl_get_rsrq(srslte_chest_dl_t *q) {
}
float srslte_chest_dl_get_rsrq_ant_port(srslte_chest_dl_t *q, uint32_t ant_idx, uint32_t port_idx) {
return q->cell.nof_prb*q->rsrp[ant_idx][port_idx] / q->rssi[ant_idx][port_idx];
}
float srslte_chest_dl_get_rsrp_ant_port(srslte_chest_dl_t *q, uint32_t ant_idx, uint32_t port) {
return q->rsrp[ant_idx][port];
}
float srslte_chest_dl_get_rsrp_port(srslte_chest_dl_t *q, uint32_t port) {
float n = 0;
for (int i = 0; i < q->last_nof_antennas; i++) {