maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'origin/fix-srs-power' into integration_2026_w07 (!3917)

Browse Source 
Fix SRS power computation

The SRS symbols have been remapped recently in
srs_estimated_channel_freq, and therefore the calculation of the SRS
power has to retrieve the symbols from different positions.
This commit is contained in:
Robert Schmidt
2026-02-12 11:57:42 +01:00
parent 4d14aac494 b2093089ab
commit 5d004818d4
1 changed files with 1 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
+1 -10
View File
@@ -992,17 +992,8 @@ int nr_srs_channel_estimation(int ant,
// Compute wideband SNR on the symbol 0 // Compute wideband SNR on the symbol 0
int tot_subcarriers = m_SRS_b * NR_NB_SC_PER_RB; int tot_subcarriers = m_SRS_b * NR_NB_SC_PER_RB;
uint16_t subcarrier_abs = first_subcarrier + nr_srs_info->k_0_p[p_index][0]; uint16_t subcarrier_abs = first_subcarrier + nr_srs_info->k_0_p[p_index][0];
if (subcarrier_abs + tot_subcarriers < ofdm_symbol_size_half) { *signal_power = signal_energy_nodc(&srs_estimated_channel_freq[subcarrier_abs], tot_subcarriers);
*signal_power = signal_energy_nodc(&srs_estimated_channel_freq[subcarrier_abs], tot_subcarriers) / tot_subcarriers;
} else {
int size1 = ofdm_symbol_size_half - subcarrier_abs;
int size2 = tot_subcarriers - size1;
uint64_t signal_power_p1 = signal_energy_nodc(&srs_estimated_channel_freq[subcarrier_abs], size1) * size1;
uint64_t signal_power_p2 = signal_energy_nodc(&srs_estimated_channel_freq[ofdm_symbol_size_half], size2) * size2;
*signal_power = (signal_power_p1 + signal_power_p2) / tot_subcarriers;
}
if (*signal_power == 0) { if (*signal_power == 0) {
LOG_W(NR_PHY, "Received SRS signal power is 0\n"); LOG_W(NR_PHY, "Received SRS signal power is 0\n");