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.
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2021 Software Radio Systems Limited
|
|
*
|
|
* By using this file, you agree to the terms and conditions set
|
|
* forth in the LICENSE file which can be found at the top level of
|
|
* the distribution.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSRAN_PSBCH_H
|
|
#define SRSRAN_PSBCH_H
|
|
|
|
#include "srsran/phy/common/phy_common_sl.h"
|
|
#include "srsran/phy/dft/dft_precoding.h"
|
|
#include "srsran/phy/fec/convolutional/convcoder.h"
|
|
#include "srsran/phy/fec/convolutional/viterbi.h"
|
|
#include "srsran/phy/fec/crc.h"
|
|
#include "srsran/phy/modem/demod_soft.h"
|
|
#include "srsran/phy/modem/modem_table.h"
|
|
#include "srsran/phy/scrambling/scrambling.h"
|
|
|
|
#define SRSRAN_SL_BCH_CRC_LEN 16
|
|
|
|
/**
|
|
* \brief Physical Sidelink broadcast channel.
|
|
*
|
|
* Reference: 3GPP TS 36.211 version 15.6.0 Release 15 Sec. 9.6
|
|
*/
|
|
typedef struct SRSRAN_API {
|
|
uint32_t N_sl_id;
|
|
srsran_sl_tm_t tm;
|
|
srsran_cp_t cp;
|
|
|
|
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 E;
|
|
uint32_t Qm;
|
|
uint32_t nof_prb;
|
|
uint32_t nof_data_symbols;
|
|
uint32_t nof_tx_symbols;
|
|
uint32_t sl_bch_tb_len;
|
|
uint32_t sl_bch_tb_crc_len;
|
|
uint32_t sl_bch_encoded_len;
|
|
float precoding_scaling;
|
|
|
|
// data
|
|
uint8_t* c;
|
|
|
|
// crc
|
|
srsran_crc_t crc_mib_sl;
|
|
uint8_t* crc_temp;
|
|
|
|
// channel coding
|
|
srsran_viterbi_t dec;
|
|
srsran_convcoder_t encoder;
|
|
uint8_t* d;
|
|
int16_t* d_16;
|
|
|
|
// rate matching
|
|
uint8_t* e;
|
|
uint8_t* e_bytes; ///< To pack bits to bytes
|
|
int16_t* e_16;
|
|
|
|
uint8_t* codeword;
|
|
uint8_t* codeword_bytes;
|
|
int16_t* llr;
|
|
|
|
// interleaving
|
|
uint32_t* interleaver_lut;
|
|
|
|
// scrambling
|
|
srsran_sequence_t seq;
|
|
|
|
// modulation
|
|
srsran_modem_table_t mod;
|
|
cf_t* mod_symbols;
|
|
|
|
// dft precoding
|
|
srsran_dft_precoding_t dft_precoder;
|
|
srsran_dft_precoding_t idft_precoder;
|
|
cf_t* scfdma_symbols;
|
|
|
|
} srsran_psbch_t;
|
|
|
|
SRSRAN_API int
|
|
srsran_psbch_init(srsran_psbch_t* q, uint32_t nof_prb, uint32_t N_sl_id, srsran_sl_tm_t tm, srsran_cp_t cp);
|
|
|
|
SRSRAN_API void srsran_psbch_free(srsran_psbch_t* q);
|
|
|
|
SRSRAN_API int srsran_psbch_encode(srsran_psbch_t* q, uint8_t* input, uint32_t input_len, cf_t* sf_buffer);
|
|
|
|
SRSRAN_API int srsran_psbch_decode(srsran_psbch_t* q, cf_t* scfdma_symbols, uint8_t* output, uint32_t max_output_len);
|
|
|
|
SRSRAN_API int srsran_psbch_reset(srsran_psbch_t* q, uint32_t N_sl_id);
|
|
|
|
SRSRAN_API int srsran_psbch_put(srsran_psbch_t* q, cf_t* symbols, cf_t* sf_buffer);
|
|
|
|
SRSRAN_API int srsran_psbch_get(srsran_psbch_t* q, cf_t* sf_buffer, cf_t* symbols);
|
|
|
|
#endif // SRSRAN_PSBCH_H
|