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NR UE: add option "--cont-fo-comp 3" to not consider measured residual DL FO for UL FO pre-compensation

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Thomas Schlichter
2025-12-19 16:42:58 +01:00
parent f6fd7b61ec
commit aa3a209842
3 changed files with 4 additions and 2 deletions
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executables/nr-ue.c
+2
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@@ -398,6 +398,8 @@ static void RU_write(nr_rxtx_thread_data_t *rxtxD, bool sl_tx_action, c16_t **tx
double ul_freq_offset = -UE->freq_offset * ((double)fp->ul_CarrierFreq / (double)fp->dl_CarrierFreq);
if (get_nrUE_params()->cont_fo_comp == 2) // different from LO frequency error compensation, Doppler UL pre-compensation has to be negative
ul_freq_offset = -ul_freq_offset;
else if (get_nrUE_params()->cont_fo_comp == 3) // do not consider residual DL FO for UL pre-compensation at all
ul_freq_offset = 0;
for (int i = 0; i < fp->nb_antennas_tx; i++)
nr_fo_compensation(UE->ul_Doppler_shift + ul_freq_offset,
fp->samples_per_subframe,
executables/nr-uesoftmodem.h
+1 -1
View File
@@ -21,7 +21,7 @@ extern uint16_t ue_id_g;
#define CONFIG_HLP_INITIAL_FO "Initially compensated DL frequency offset (e.g. known Doppler shift in NTN LEO scenario)\n"
#define CONFIG_HLP_FREQ_SYNC_P "coefficient for Proportional part of continuous frequency offset compensation PI controller\n"
#define CONFIG_HLP_FREQ_SYNC_I "coefficient for Integrating part of continuous frequency offset compensation PI controller\n"
#define CONFIG_HLP_CONT_FO_COMP "Enable continuous frequency offset (FO) estimation and compensation and specify main FO source (1 = local oscillator, 2 = Doppler shift)\n"
#define CONFIG_HLP_CONT_FO_COMP "Enable continuous frequency offset (FO) estimation and (pre-)compensation and specify main FO source (1 = local oscillator, 2 = Doppler shift, 3 = Don't consider residual DL FO in UL FO pre-compensation)\n"
#define CONFIG_HLP_AGC "Rx Gain control used for UE\n"
#define CONFIG_HLP_NUM_UL_ACTORS "Number of UL actors to use. Set to 0 to disable UL actor framework and do processing inline\n"
#define CONFIG_HLP_NUM_DL_ACTORS "Number of DL actors to use. Set to 0 to disable DL actor framework and do processing inline\n"