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C++

/**
*
* \section COPYRIGHT
*
* Copyright 2013-2020 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 SRSLTE_CHANNEL_H
#define SRSLTE_CHANNEL_H
#include "ch_awgn.h"
#include "delay.h"
#include "fading.h"
#include "hst.h"
#include "rlf.h"
#include "srslte/phy/common/phy_common.h"
#include "srslte/srslog/srslog.h"
#include <memory>
#include <string>
namespace srslte {
class channel
{
public:
typedef struct {
// General
bool enable = false;
// AWGN options
bool awgn_enable = false;
float awgn_signal_power_dBfs = 0.0f;
float awgn_snr_dB = 30.0f;
// Fading options
bool fading_enable = false;
std::string fading_model = "none";
// High Speed Train options
bool hst_enable = false;
float hst_fd_hz = 750.0f;
float hst_period_s = 7.2f;
float hst_init_time_s = 0.0f;
// Delay options
bool delay_enable = false;
float delay_min_us = 10;
float delay_max_us = 100;
float delay_period_s = 3600;
float delay_init_time_s = 0;
// RLF options
bool rlf_enable = false;
uint32_t rlf_t_on_ms = 10000;
uint32_t rlf_t_off_ms = 2000;
} args_t;
channel(const args_t& channel_args, uint32_t _nof_channels, srslog::basic_logger& logger);
~channel();
void set_srate(uint32_t srate);
void set_signal_power_dBfs(float power_dBfs);
void run(cf_t* in[SRSLTE_MAX_CHANNELS], cf_t* out[SRSLTE_MAX_CHANNELS], uint32_t len, const srslte_timestamp_t& t);
private:
srslog::basic_logger& logger;
float hst_init_phase = 0.0f;
srslte_channel_fading_t* fading[SRSLTE_MAX_CHANNELS] = {};
srslte_channel_delay_t* delay[SRSLTE_MAX_CHANNELS] = {};
srslte_channel_awgn_t* awgn = nullptr;
srslte_channel_hst_t* hst = nullptr;
srslte_channel_rlf_t* rlf = nullptr;
cf_t* buffer_in = nullptr;
cf_t* buffer_out = nullptr;
uint32_t nof_channels = 0;
uint32_t current_srate = 0;
args_t args = {};
};
typedef std::unique_ptr<channel> channel_ptr;
} // namespace srslte
#endif // SRSLTE_CHANNEL_H