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.
71 lines
1.8 KiB
C
71 lines
1.8 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: ssss.h
|
|
*
|
|
* Description: Secondary sidelink synchronization signal (SSSS) generation and detection.
|
|
*
|
|
*
|
|
* Reference: 3GPP TS 36.211 version 15.6.0 Release 15 Sec. 9.7.2
|
|
*****************************************************************************/
|
|
|
|
#ifndef SRSRAN_SSSS_H
|
|
#define SRSRAN_SSSS_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include "srsran/phy/common/phy_common_sl.h"
|
|
#include "srsran/phy/dft/dft.h"
|
|
|
|
#define SRSRAN_SSSS_NOF_SEQ 336
|
|
#define SRSRAN_SSSS_N 31
|
|
#define SRSRAN_SSSS_LEN 2 * SRSRAN_SSSS_N
|
|
|
|
typedef struct SRSRAN_API {
|
|
|
|
float ssss_signal[SRSRAN_SSSS_NOF_SEQ][SRSRAN_SSSS_LEN]; // One sequence for each N_sl_id
|
|
|
|
cf_t** ssss_sf_freq;
|
|
|
|
cf_t* input_pad_freq;
|
|
cf_t* input_pad_time;
|
|
|
|
cf_t* dot_prod_output;
|
|
cf_t* dot_prod_output_time;
|
|
|
|
cf_t* shifted_output;
|
|
|
|
float* shifted_output_abs;
|
|
|
|
int32_t corr_peak_pos;
|
|
float corr_peak_value;
|
|
|
|
uint32_t N_sl_id;
|
|
|
|
srsran_dft_plan_t plan_input;
|
|
srsran_dft_plan_t plan_out;
|
|
|
|
} srsran_ssss_t;
|
|
|
|
SRSRAN_API int srsran_ssss_init(srsran_ssss_t* q, uint32_t nof_prb, srsran_cp_t cp, srsran_sl_tm_t tm);
|
|
|
|
SRSRAN_API void srsran_ssss_generate(float* ssss_signal, uint32_t N_sl_id, srsran_sl_tm_t tm);
|
|
|
|
SRSRAN_API void srsran_ssss_put_sf_buffer(float* ssss_signal, cf_t* sf_buffer, uint32_t nof_prb, srsran_cp_t cp);
|
|
|
|
SRSRAN_API int srsran_ssss_find(srsran_ssss_t* q, cf_t* input, uint32_t nof_prb, uint32_t N_id_2, srsran_cp_t cp);
|
|
|
|
SRSRAN_API void srsran_ssss_free(srsran_ssss_t* q);
|
|
|
|
#endif |