mirror of https://github.com/PentHertz/srsLTE.git
100 lines
3.2 KiB
C
100 lines
3.2 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.
|
|
*
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* File: pbch.h
|
|
*
|
|
* Description: Physical broadcast channel. If cell.nof_ports = 0, the number
|
|
* of ports is blindly determined using the CRC of the received
|
|
* codeword for 1, 2 and 4 ports
|
|
*
|
|
* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 6.6
|
|
*****************************************************************************/
|
|
|
|
#ifndef SRSRAN_PBCH_H
|
|
#define SRSRAN_PBCH_H
|
|
|
|
#include "srsran/config.h"
|
|
#include "srsran/phy/ch_estimation/chest_dl.h"
|
|
#include "srsran/phy/common/phy_common.h"
|
|
#include "srsran/phy/fec/convolutional/convcoder.h"
|
|
#include "srsran/phy/fec/convolutional/rm_conv.h"
|
|
#include "srsran/phy/fec/convolutional/viterbi.h"
|
|
#include "srsran/phy/fec/crc.h"
|
|
#include "srsran/phy/mimo/layermap.h"
|
|
#include "srsran/phy/mimo/precoding.h"
|
|
#include "srsran/phy/modem/demod_soft.h"
|
|
#include "srsran/phy/modem/mod.h"
|
|
#include "srsran/phy/scrambling/scrambling.h"
|
|
|
|
#define SRSRAN_BCH_PAYLOAD_LEN 24
|
|
#define SRSRAN_BCH_PAYLOADCRC_LEN (SRSRAN_BCH_PAYLOAD_LEN + 16)
|
|
#define SRSRAN_BCH_ENCODED_LEN 3 * (SRSRAN_BCH_PAYLOADCRC_LEN)
|
|
|
|
#define SRSRAN_PBCH_MAX_RE 256 // make it avx2-aligned
|
|
|
|
/* PBCH object */
|
|
typedef struct SRSRAN_API {
|
|
srsran_cell_t cell;
|
|
|
|
uint32_t nof_symbols;
|
|
|
|
/* buffers */
|
|
cf_t* ce[SRSRAN_MAX_PORTS];
|
|
cf_t* symbols[SRSRAN_MAX_PORTS];
|
|
cf_t* x[SRSRAN_MAX_PORTS];
|
|
cf_t* d;
|
|
float* llr;
|
|
float* temp;
|
|
float rm_f[SRSRAN_BCH_ENCODED_LEN];
|
|
uint8_t* rm_b;
|
|
uint8_t data[SRSRAN_BCH_PAYLOADCRC_LEN];
|
|
uint8_t data_enc[SRSRAN_BCH_ENCODED_LEN];
|
|
|
|
uint32_t frame_idx;
|
|
|
|
/* tx & rx objects */
|
|
srsran_modem_table_t mod;
|
|
srsran_sequence_t seq;
|
|
srsran_viterbi_t decoder;
|
|
srsran_crc_t crc;
|
|
srsran_convcoder_t encoder;
|
|
bool search_all_ports;
|
|
|
|
} srsran_pbch_t;
|
|
|
|
SRSRAN_API int srsran_pbch_init(srsran_pbch_t* q);
|
|
|
|
SRSRAN_API void srsran_pbch_free(srsran_pbch_t* q);
|
|
|
|
SRSRAN_API int srsran_pbch_set_cell(srsran_pbch_t* q, srsran_cell_t cell);
|
|
|
|
SRSRAN_API int srsran_pbch_decode(srsran_pbch_t* q,
|
|
srsran_chest_dl_res_t* channel,
|
|
cf_t* sf_symbols[SRSRAN_MAX_PORTS],
|
|
uint8_t bch_payload[SRSRAN_BCH_PAYLOAD_LEN],
|
|
uint32_t* nof_tx_ports,
|
|
int* sfn_offset);
|
|
|
|
SRSRAN_API int srsran_pbch_encode(srsran_pbch_t* q,
|
|
uint8_t bch_payload[SRSRAN_BCH_PAYLOAD_LEN],
|
|
cf_t* sf_symbols[SRSRAN_MAX_PORTS],
|
|
uint32_t frame_idx);
|
|
|
|
SRSRAN_API void srsran_pbch_decode_reset(srsran_pbch_t* q);
|
|
|
|
SRSRAN_API void srsran_pbch_mib_unpack(uint8_t* msg, srsran_cell_t* cell, uint32_t* sfn);
|
|
|
|
SRSRAN_API void srsran_pbch_mib_pack(srsran_cell_t* cell, uint32_t sfn, uint8_t* msg);
|
|
|
|
#endif // SRSRAN_PBCH_H
|