mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/*
|
|
* Copyright 2013-2020 Software Radio Systems Limited
|
|
*
|
|
* This file is part of srsLTE.
|
|
*
|
|
* srsLTE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsLTE is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSLTE_PSSCH_H
|
|
#define SRSLTE_PSSCH_H
|
|
|
|
#include "srslte/phy/common/phy_common_sl.h"
|
|
#include "srslte/phy/dft/dft_precoding.h"
|
|
#include "srslte/phy/fec/crc.h"
|
|
#include "srslte/phy/fec/turbocoder.h"
|
|
#include "srslte/phy/fec/turbodecoder.h"
|
|
#include "srslte/phy/modem/mod.h"
|
|
#include "srslte/phy/scrambling/scrambling.h"
|
|
|
|
/**
|
|
* \brief Physical Sidelink shared channel.
|
|
*
|
|
* Reference: 3GPP TS 36.211 version 15.6.0 Release 15 Sec. 9.3
|
|
*/
|
|
|
|
// Redundancy version
|
|
static const uint8_t srslte_pssch_rv[4] = {0, 2, 3, 1};
|
|
|
|
typedef struct SRSLTE_API {
|
|
uint32_t prb_start_idx; // PRB start idx to map RE from RIV
|
|
uint32_t nof_prb; // PSSCH nof_prbs, Length of continuous PRB to map RE (in the pool) from RIV
|
|
uint32_t N_x_id;
|
|
uint32_t mcs_idx;
|
|
uint32_t rv_idx;
|
|
uint32_t sf_idx; // PSSCH sf_idx
|
|
} srslte_pssch_cfg_t;
|
|
|
|
typedef struct SRSLTE_API {
|
|
|
|
srslte_cell_sl_t cell;
|
|
srslte_sl_comm_resource_pool_t sl_comm_resource_pool;
|
|
srslte_pssch_cfg_t pssch_cfg;
|
|
|
|
srslte_cbsegm_t cb_segm;
|
|
|
|
uint32_t G;
|
|
uint32_t E;
|
|
uint32_t Qm;
|
|
uint32_t nof_data_symbols;
|
|
uint32_t nof_tx_symbols;
|
|
|
|
uint32_t nof_data_re; // Number of RE considered during the channel mapping
|
|
uint32_t nof_tx_re; // Number of RE actually transmitted over the air (without last OFDM symbol)
|
|
uint32_t sl_sch_tb_len;
|
|
uint32_t scfdma_symbols_len;
|
|
|
|
// data
|
|
uint8_t* b;
|
|
|
|
// crc
|
|
uint8_t* c_r;
|
|
uint8_t* c_r_bytes;
|
|
uint8_t* tb_crc_temp;
|
|
srslte_crc_t tb_crc;
|
|
uint8_t* cb_crc_temp;
|
|
srslte_crc_t cb_crc;
|
|
|
|
// channel coding
|
|
uint8_t* d_r;
|
|
int16_t* d_r_16;
|
|
srslte_tcod_t tcod;
|
|
srslte_tdec_t tdec;
|
|
|
|
// rate matching
|
|
uint8_t* e_r;
|
|
int16_t* e_r_16;
|
|
uint8_t* buff_b;
|
|
|
|
uint8_t* codeword;
|
|
uint8_t* codeword_bytes;
|
|
int16_t* llr;
|
|
|
|
// interleaving
|
|
uint8_t* f;
|
|
uint8_t* f_bytes;
|
|
int16_t* f_16;
|
|
uint32_t* interleaver_lut;
|
|
|
|
// scrambling
|
|
srslte_sequence_t scrambling_seq;
|
|
|
|
// modulation
|
|
srslte_mod_t mod_idx;
|
|
srslte_modem_table_t mod[SRSLTE_MOD_NITEMS];
|
|
cf_t* symbols;
|
|
uint8_t* bits_after_demod;
|
|
uint8_t* bytes_after_demod;
|
|
|
|
// dft precoding
|
|
srslte_dft_precoding_t dft_precoder;
|
|
cf_t* scfdma_symbols;
|
|
srslte_dft_precoding_t idft_precoder;
|
|
|
|
} srslte_pssch_t;
|
|
|
|
SRSLTE_API int
|
|
srslte_pssch_init(srslte_pssch_t* q, srslte_cell_sl_t cell, srslte_sl_comm_resource_pool_t sl_comm_resource_pool);
|
|
SRSLTE_API int srslte_pssch_set_cfg(srslte_pssch_t* q, srslte_pssch_cfg_t pssch_cfg);
|
|
SRSLTE_API int srslte_pssch_encode(srslte_pssch_t* q, uint8_t* input, uint32_t input_len, cf_t* sf_buffer);
|
|
SRSLTE_API int srslte_pssch_decode(srslte_pssch_t* q, cf_t* equalized_sf_syms, uint8_t* output, uint32_t output_len);
|
|
SRSLTE_API int srslte_pssch_put(srslte_pssch_t* q, cf_t* sf_buffer, cf_t* symbols);
|
|
SRSLTE_API int srslte_pssch_get(srslte_pssch_t* q, cf_t* sf_buffer, cf_t* symbols);
|
|
SRSLTE_API void srslte_pssch_free(srslte_pssch_t* q);
|
|
|
|
#endif // SRSLTE_PSSCH_H
|