From 1c63d44afd844043a56871b5850cab05d3dfb065 Mon Sep 17 00:00:00 2001 From: Thomas Schlichter Date: Thu, 21 Aug 2025 17:02:32 +0200 Subject: [PATCH] NR UE: make the power averaging IIR filter faster Especially high initial noise levels would stay too long and negatively impact the accuracy of later S(I)NR computations. --- openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c b/openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c index fcf5484ed7..3c9850bd52 100644 --- a/openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c +++ b/openair1/PHY/NR_UE_ESTIMATION/nr_ue_measurements.c @@ -38,9 +38,8 @@ #include "common/utils/LOG/log.h" #include "PHY/sse_intrin.h" -//#define k1 1000 -#define k1 ((long long int) 1000) -#define k2 ((long long int) (1024-k1)) +#define K1 ((long long int) 512) +#define K2 ((long long int) (1024-K1)) //#define DEBUG_MEAS_RRC //#define DEBUG_MEAS_UE @@ -136,11 +135,11 @@ void nr_ue_measurements(PHY_VARS_NR_UE *ue, if (ue->init_averaging == 0) { for (gNB_id = 0; gNB_id < ue->n_connected_gNB; gNB_id++) - ue->measurements.rx_power_avg[gNB_id] = (int)(((k1*((long long int)(ue->measurements.rx_power_avg[gNB_id]))) + (k2*((long long int)(ue->measurements.rx_power_tot[gNB_id])))) >> 10); + ue->measurements.rx_power_avg[gNB_id] = (int)((K1 * ue->measurements.rx_power_avg[gNB_id] + K2 * ue->measurements.rx_power_tot[gNB_id]) >> 10); - ue->measurements.n0_power_avg = (int)(((k1*((long long int) (ue->measurements.n0_power_avg))) + (k2*((long long int) (ue->measurements.n0_power_tot))))>>10); + ue->measurements.n0_power_avg = (int)((K1 * ue->measurements.n0_power_avg + K2 * ue->measurements.n0_power_tot) >> 10); - LOG_D(PHY, "Noise Power Computation: k1 %lld k2 %lld n0 avg %u n0 tot %u\n", k1, k2, ue->measurements.n0_power_avg, ue->measurements.n0_power_tot); + LOG_D(PHY, "Noise Power Computation: K1 %lld K2 %lld n0 avg %u n0 tot %u\n", K1, K2, ue->measurements.n0_power_avg, ue->measurements.n0_power_tot); } else {