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fix typo in nr_slot_fep_init_sync()

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This function is used during initial synchronization, only.
This typo leads to wrong computation of the OFDM symbol start within a slot, after PBCH decoding.
The result is a time offset and therefore a rotation in frequency domain for the initial PDCCH and PDSCH (SIB1) reception.
This commit is contained in:
Thomas Schlichter
2023-07-21 13:34:49 +02:00
parent fe61354173
commit 5bc77ad169
1 changed files with 1 additions and 1 deletions
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openair1/PHY/MODULATION/slot_fep_nr.c
+1 -1
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@@ -148,7 +148,7 @@ int nr_slot_fep_init_sync(PHY_VARS_NR_UE *ue,
unsigned int rx_offset = sample_offset + slot_offset;
unsigned int abs_symbol = Ns * frame_parms->symbols_per_slot + symbol;
for (int idx_symb = Ns*frame_parms->symbols_per_slot; idx_symb <= abs_symbol; idx_symb++)
rx_offset += (abs_symbol%(0x7<<frame_parms->numerology_index)) ? nb_prefix_samples : nb_prefix_samples0;
rx_offset += (idx_symb%(0x7<<frame_parms->numerology_index)) ? nb_prefix_samples : nb_prefix_samples0;
rx_offset += frame_parms->ofdm_symbol_size * symbol;
#ifdef DEBUG_FEP