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Reverse bits in UCI message when using polar encoder/decoder

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This commit is contained in:
luis_pereira87
2023-09-27 08:30:06 +01:00
parent 58f6cb2af9
commit 2360925e29
2 changed files with 9 additions and 3 deletions
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openair1/PHY/NR_TRANSPORT/pucch_rx.c
+6 -2
View File
@@ -1693,12 +1693,16 @@ void nr_decode_pucch2(PHY_VARS_gNB *gNB,
// run polar decoder on llrs
decoderState = polar_decoder_int16((int16_t *)llrs, decodedPayload, 0, NR_POLAR_UCI_PUCCH_MESSAGE_TYPE, nb_bit, pucch_pdu->prb_size);
LOG_D(PHY,"UCI decoderState %d, payload[0] %llu\n",decoderState,(unsigned long long)decodedPayload[0]);
// Decoder reversal
decodedPayload[0] = reverse_bits(decodedPayload[0], nb_bit);
if (decoderState>0) decoderState=1;
corr_dB = dB_fixed64(corr);
LOG_D(PHY,"metric %d dB\n",corr_dB);
}
LOG_D(PHY, "UCI decoderState %d, payload[0] %llu\n", decoderState, (unsigned long long)decodedPayload[0]);
// estimate CQI for MAC (from antenna port 0 only)
// TODO this computation is wrong -> to be ignored at MAC for now
int SNRtimes10 = dB_fixed_times10(signal_energy_nodc((int32_t *)&rxdataF[0][soffset+(l2*frame_parms->ofdm_symbol_size)+re_offset[0]],
@@ -1761,7 +1765,7 @@ void nr_decode_pucch2(PHY_VARS_gNB *gNB,
}
bit_left = pucch_pdu->bit_len_csi_part1-((csi_part1_bytes-1)<<3);
uci_pdu->csi_part1.csi_part1_payload[i] = decodedPayload[0] & ((1<<bit_left)-1);
decodedPayload[0] = pucch_pdu->bit_len_csi_part1 < 64 ? decodedPayload[0] >> pucch_pdu->bit_len_csi_part1 : 0;
decodedPayload[0] = pucch_pdu->bit_len_csi_part1 < 64 ? decodedPayload[0] >> bit_left : 0;
}
if (pucch_pdu->bit_len_csi_part2>0) {
openair1/PHY/NR_UE_TRANSPORT/pucch_nr.c
+3 -1
View File
@@ -644,7 +644,9 @@ static void nr_uci_encoding(uint64_t payload,
b[7] = b[0];
AssertFatal(nrofPRB<=16,"Number of PRB >16\n");
} else if (A>=12) {
AssertFatal(A<65,"Polar encoding not supported yet for UCI with more than 64 bits\n");
// Encoder reversal
payload = reverse_bits(payload, A);
polar_encoder_fast(&payload, b, 0,0,
NR_POLAR_UCI_PUCCH_MESSAGE_TYPE,
A,