mirror of https://github.com/PentHertz/srsLTE.git
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSLTE_PSCCH_H
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#define SRSLTE_PSCCH_H
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#include <stdint.h>
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#include "srslte/phy/common/phy_common_sl.h"
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#include "srslte/phy/common/sequence.h"
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#include "srslte/phy/dft/dft_precoding.h"
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#include "srslte/phy/fec/convolutional/convcoder.h"
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#include "srslte/phy/fec/convolutional/viterbi.h"
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#include "srslte/phy/fec/crc.h"
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#include "srslte/phy/modem/modem_table.h"
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/**
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* \brief Physical Sidelink control channel.
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*
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* Reference: 3GPP TS 36.211 version 15.6.0 Release 15 Section 9.4
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*/
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typedef struct SRSLTE_API {
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uint32_t max_prb;
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srslte_cell_sl_t cell;
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uint32_t sci_len;
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uint32_t nof_tx_re;
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uint32_t pscch_nof_prb;
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// crc
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uint8_t* c;
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srslte_crc_t crc;
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uint8_t* sci_crc;
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// channel coding
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srslte_viterbi_t dec;
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srslte_convcoder_t encoder;
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uint8_t* d;
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int16_t* d_16;
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// rate matching
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uint32_t E;
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uint8_t* e;
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int16_t* e_16;
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uint8_t* e_bytes; ///< To pack bits to bytes
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uint32_t nof_symbols;
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// interleaving
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uint32_t* interleaver_lut;
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uint8_t* codeword;
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uint8_t* codeword_bytes;
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// scrambling
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srslte_sequence_t seq;
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// modulation
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srslte_modem_table_t mod;
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cf_t* mod_symbols;
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int16_t* llr;
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// dft precoding
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srslte_dft_precoding_t dft_precoder;
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srslte_dft_precoding_t idft_precoder;
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cf_t* scfdma_symbols;
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} srslte_pscch_t;
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SRSLTE_API int srslte_pscch_init(srslte_pscch_t* q, uint32_t max_prb);
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SRSLTE_API int srslte_pscch_set_cell(srslte_pscch_t* q, srslte_cell_sl_t cell);
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SRSLTE_API int srslte_pscch_encode(srslte_pscch_t* q, uint8_t* sci, cf_t* sf_buffer, uint32_t prb_start_idx);
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SRSLTE_API int srslte_pscch_decode(srslte_pscch_t* q, cf_t* equalized_sf_syms, uint8_t* sci, uint32_t prb_start_idx);
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SRSLTE_API int srslte_pscch_put(srslte_pscch_t* q, cf_t* sf_buffer, uint32_t prb_start_idx);
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SRSLTE_API int srslte_pscch_get(srslte_pscch_t* q, cf_t* sf_buffer, uint32_t prb_start_idx);
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SRSLTE_API void srslte_pscch_free(srslte_pscch_t* q);
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#endif // SRSLTE_PSCCH_H
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