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NR UE: in nr_adjust_synch_ue() extend the peak search to +/- cyclic prefix size

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esp. for LEO NTN scenarios the timing drifts during initial sync, which is mostly compensated with --ntn-initial-time-drift.
But there might be a residual time offset, and by extending the peak search window we make this more tolerant.
This commit is contained in:
Thomas Schlichter
2025-04-10 13:56:20 +00:00
parent 4e3a7ad56e
commit a9132a2f79
1 changed files with 1 additions and 1 deletions
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openair1/PHY/NR_UE_ESTIMATION/nr_adjust_synch_ue.c
+1 -1
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@@ -47,7 +47,7 @@ int nr_adjust_synch_ue(NR_DL_FRAME_PARMS *frame_parms,
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_ADJUST_SYNCH, VCD_FUNCTION_IN);
// search for maximum position within the cyclic prefix
for (int i = -frame_parms->nb_prefix_samples/2; i < frame_parms->nb_prefix_samples/2; i++) {
for (int i = -frame_parms->nb_prefix_samples; i < frame_parms->nb_prefix_samples; i++) {
int temp = 0;
int j = (i < 0) ? (i + frame_parms->ofdm_symbol_size) : i;