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NR UE: consider computed DL/UL Doppler shift in continuous FO compensation

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This commit is contained in:
Thomas Schlichter
2025-12-19 16:41:01 +01:00
parent b59bcaf494
commit bc81662c2a
3 changed files with 59 additions and 26 deletions
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openair1/PHY/MODULATION/slot_fep_nr.c
+1 -1
View File
@@ -119,7 +119,7 @@ int nr_slot_fep(PHY_VARS_NR_UE *ue,
if (ue && ue->cont_fo_comp) {
start_meas_nr_ue_phy(ue, RX_FO_COMPENSATION_STATS);
nr_fo_compensation(ue->freq_offset,
nr_fo_compensation(ue->dl_Doppler_shift + ue->freq_offset,
frame_parms->samples_per_subframe,
rx_offset,
rxdata_symb_ptr[aa],
openair1/PHY/defs_nr_UE.h
+4 -2
View File
@@ -462,8 +462,10 @@ typedef struct PHY_VARS_NR_UE_s {
double initial_fo; /// initial frequency offset provided by the user
int cont_fo_comp; /// flag enabling the continuous frequency offset estimation and compensation
double freq_offset; /// currently compensated frequency offset
double freq_off_acc; /// accumulated frequency error (for PI controller)
double freq_offset; /// currently compensated DL frequency offset (without dl_Doppler_shift)
double freq_off_acc; /// accumulated DL frequency error (for PI controller)
double dl_Doppler_shift; /// calculated DL Doppler shift
double ul_Doppler_shift; /// calculated UL Doppler shift
/// Timing Advance updates variables
/// Timing advance update computed from the TA command signalled from gNB