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113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
4 years ago
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/*
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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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/******************************************************************************
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* File: sch_nr.h
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*
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* Description: Common UL and DL shared channel encode/decode functions for NR.
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*
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* Reference: 3GPP TS 38.212 V15.9.0
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*****************************************************************************/
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#ifndef SRSLTE_SCH_NR_H
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#define SRSLTE_SCH_NR_H
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#include "srslte/config.h"
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#include "srslte/phy/common/phy_common_nr.h"
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#include "srslte/phy/fec/crc.h"
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#include "srslte/phy/fec/ldpc/ldpc_decoder.h"
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#include "srslte/phy/fec/ldpc/ldpc_encoder.h"
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#include "srslte/phy/fec/ldpc/ldpc_rm.h"
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#include "srslte/phy/phch/pdsch_cfg_nr.h"
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#include "srslte/phy/phch/ra_nr.h"
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typedef struct SRSLTE_API {
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srslte_carrier_nr_t carrier;
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/// Temporal data buffers
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uint8_t* cb_in;
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/// CRC generators
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srslte_crc_t crc_tb_24;
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srslte_crc_t crc_tb_16;
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srslte_crc_t crc_cb;
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/// LDPC encoders
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srslte_ldpc_encoder_t* encoder_bg1[MAX_LIFTSIZE];
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srslte_ldpc_encoder_t* encoder_bg2[MAX_LIFTSIZE];
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/// LDPC Rate matcher
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srslte_ldpc_rm_t rm;
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} srslte_sch_nr_encoder_t;
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typedef struct SRSLTE_API {
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bool disable_simd;
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bool use_flooded;
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float scaling_factor;
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} srslte_sch_nr_decoder_cfg_t;
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typedef struct SRSLTE_API {
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/// CRC generators
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srslte_crc_t crc_tb_24;
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srslte_crc_t crc_tb_16;
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srslte_crc_t crc_cb;
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/// LDPC decoders
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srslte_ldpc_decoder_t* decoder_bg1[MAX_LIFTSIZE];
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srslte_ldpc_decoder_t* decoder_bg2[MAX_LIFTSIZE];
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/// LDPC Tx/Rx Rate matcher
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srslte_ldpc_rm_t rm;
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} srslte_sch_nr_decoder_t;
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/**
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* @brief Initialises shared channel encoder
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* @param q
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* @return
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*/
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SRSLTE_API int srslte_sch_nr_encoder_init(srslte_sch_nr_encoder_t* q);
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SRSLTE_API int srslte_sch_nr_encoder_set_carrier(srslte_sch_nr_encoder_t* q, const srslte_carrier_nr_t* carrier);
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SRSLTE_API int srslte_dlsch_nr_encode(srslte_sch_nr_encoder_t* q,
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const srslte_pdsch_cfg_nr_t* cfg,
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const srslte_ra_tb_nr_t* tb,
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const uint8_t* data,
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uint8_t* e_bits);
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SRSLTE_API void srslte_sch_nr_encoder_free(srslte_sch_nr_encoder_t* q);
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/**
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* @brief Initialises shared channel decoder
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* @param q
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* @return
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*/
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SRSLTE_API int srslte_sch_nr_init_decoder(srslte_sch_nr_decoder_t* q, const srslte_sch_nr_decoder_cfg_t* cfg);
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SRSLTE_API int srslte_dlsch_nr_decode(srslte_sch_nr_decoder_t* q,
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const srslte_pdsch_cfg_nr_t* cfg,
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const srslte_pdsch_grant_nr_t* grant,
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int8_t* e_bits,
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uint8_t* data);
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SRSLTE_API void srslte_sch_nr_decoder_free(srslte_sch_nr_decoder_t* q);
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#endif // SRSLTE_SCH_NR_H
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