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
4.2 KiB
C
128 lines
4.2 KiB
C
/**
|
|
* Copyright 2013-2021 Software Radio Systems Limited
|
|
*
|
|
* This file is part of srsRAN.
|
|
*
|
|
* srsRAN 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.
|
|
*
|
|
* srsRAN 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/.
|
|
*
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* File: phich.h
|
|
*
|
|
* Description: Physical Hybrid ARQ indicator channel.
|
|
*
|
|
* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 6.9
|
|
*****************************************************************************/
|
|
|
|
#ifndef SRSRAN_PHICH_H
|
|
#define SRSRAN_PHICH_H
|
|
|
|
#include "regs.h"
|
|
#include "srsran/config.h"
|
|
#include "srsran/phy/ch_estimation/chest_dl.h"
|
|
#include "srsran/phy/common/phy_common.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_PHICH_NORM_NSEQUENCES 8
|
|
#define SRSRAN_PHICH_EXT_NSEQUENCES 4
|
|
#define SRSRAN_PHICH_NBITS 3
|
|
|
|
#define SRSRAN_PHICH_NORM_MSYMB SRSRAN_PHICH_NBITS * 4
|
|
#define SRSRAN_PHICH_EXT_MSYMB SRSRAN_PHICH_NBITS * 2
|
|
#define SRSRAN_PHICH_MAX_NSYMB SRSRAN_PHICH_NORM_MSYMB
|
|
#define SRSRAN_PHICH_NORM_C 1
|
|
#define SRSRAN_PHICH_EXT_C 2
|
|
#define SRSRAN_PHICH_NORM_NSF 4
|
|
#define SRSRAN_PHICH_EXT_NSF 2
|
|
|
|
/* phich object */
|
|
typedef struct SRSRAN_API {
|
|
srsran_cell_t cell;
|
|
|
|
uint32_t nof_rx_antennas;
|
|
|
|
/* handler to REGs resource mapper */
|
|
srsran_regs_t* regs;
|
|
|
|
/* buffers */
|
|
cf_t ce[SRSRAN_MAX_PORTS][SRSRAN_MAX_PORTS][SRSRAN_PHICH_MAX_NSYMB];
|
|
cf_t sf_symbols[SRSRAN_MAX_PORTS][SRSRAN_PHICH_MAX_NSYMB];
|
|
cf_t x[SRSRAN_MAX_PORTS][SRSRAN_PHICH_MAX_NSYMB];
|
|
cf_t d[SRSRAN_PHICH_MAX_NSYMB];
|
|
cf_t d0[SRSRAN_PHICH_MAX_NSYMB];
|
|
cf_t z[SRSRAN_PHICH_NBITS];
|
|
|
|
/* bit message */
|
|
uint8_t data[SRSRAN_PHICH_NBITS];
|
|
float data_rx[SRSRAN_PHICH_NBITS];
|
|
|
|
/* tx & rx objects */
|
|
srsran_modem_table_t mod;
|
|
srsran_sequence_t seq[SRSRAN_NOF_SF_X_FRAME];
|
|
|
|
} srsran_phich_t;
|
|
|
|
typedef struct SRSRAN_API {
|
|
uint32_t ngroup;
|
|
uint32_t nseq;
|
|
} srsran_phich_resource_t;
|
|
|
|
typedef struct SRSRAN_API {
|
|
uint32_t n_prb_lowest;
|
|
uint32_t n_dmrs;
|
|
uint32_t I_phich;
|
|
} srsran_phich_grant_t;
|
|
|
|
typedef struct SRSRAN_API {
|
|
bool ack_value;
|
|
float distance;
|
|
} srsran_phich_res_t;
|
|
|
|
SRSRAN_API int srsran_phich_init(srsran_phich_t* q, uint32_t nof_rx_antennas);
|
|
|
|
SRSRAN_API void srsran_phich_free(srsran_phich_t* q);
|
|
|
|
SRSRAN_API int srsran_phich_set_cell(srsran_phich_t* q, srsran_regs_t* regs, srsran_cell_t cell);
|
|
|
|
SRSRAN_API void srsran_phich_set_regs(srsran_phich_t* q, srsran_regs_t* regs);
|
|
|
|
SRSRAN_API void srsran_phich_calc(srsran_phich_t* q, srsran_phich_grant_t* grant, srsran_phich_resource_t* n_phich);
|
|
|
|
SRSRAN_API int srsran_phich_decode(srsran_phich_t* q,
|
|
srsran_dl_sf_cfg_t* sf,
|
|
srsran_chest_dl_res_t* channel,
|
|
srsran_phich_resource_t n_phich,
|
|
cf_t* sf_symbols[SRSRAN_MAX_PORTS],
|
|
srsran_phich_res_t* result);
|
|
|
|
SRSRAN_API int srsran_phich_encode(srsran_phich_t* q,
|
|
srsran_dl_sf_cfg_t* sf,
|
|
srsran_phich_resource_t n_phich,
|
|
uint8_t ack,
|
|
cf_t* sf_symbols[SRSRAN_MAX_PORTS]);
|
|
|
|
SRSRAN_API void srsran_phich_reset(srsran_phich_t* q, cf_t* slot_symbols[SRSRAN_MAX_PORTS]);
|
|
|
|
SRSRAN_API uint32_t srsran_phich_ngroups(srsran_phich_t* q);
|
|
|
|
SRSRAN_API uint32_t srsran_phich_nsf(srsran_phich_t* q);
|
|
|
|
#endif // SRSRAN_PHICH_H
|