mirror of https://github.com/PentHertz/srsLTE.git
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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/******************************************************************************
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* File: pcfich.h
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*
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* Description: Physical control format indicator channel
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*
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* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 6.7
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*****************************************************************************/
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#ifndef SRSRAN_PCFICH_H
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#define SRSRAN_PCFICH_H
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#include "srsran/config.h"
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#include "srsran/phy/ch_estimation/chest_dl.h"
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#include "srsran/phy/common/phy_common.h"
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#include "srsran/phy/mimo/layermap.h"
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#include "srsran/phy/mimo/precoding.h"
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#include "srsran/phy/modem/demod_soft.h"
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#include "srsran/phy/modem/mod.h"
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#include "srsran/phy/phch/regs.h"
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#include "srsran/phy/scrambling/scrambling.h"
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#define PCFICH_CFI_LEN 32
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#define PCFICH_RE PCFICH_CFI_LEN / 2
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/* PCFICH object */
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typedef struct SRSRAN_API {
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srsran_cell_t cell;
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int nof_symbols;
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uint32_t nof_rx_antennas;
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/* handler to REGs resource mapper */
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srsran_regs_t* regs;
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/* buffers */
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cf_t ce[SRSRAN_MAX_PORTS][SRSRAN_MAX_PORTS][PCFICH_RE];
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cf_t symbols[SRSRAN_MAX_PORTS][PCFICH_RE];
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cf_t x[SRSRAN_MAX_PORTS][PCFICH_RE];
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cf_t d[PCFICH_RE];
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// cfi table in floats
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float cfi_table_float[3][PCFICH_CFI_LEN];
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/* bit message */
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uint8_t data[PCFICH_CFI_LEN];
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/* received soft bits */
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float data_f[PCFICH_CFI_LEN];
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/* tx & rx objects */
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srsran_modem_table_t mod;
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srsran_sequence_t seq[SRSRAN_NOF_SF_X_FRAME];
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} srsran_pcfich_t;
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SRSRAN_API int srsran_pcfich_init(srsran_pcfich_t* q, uint32_t nof_rx_antennas);
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SRSRAN_API int srsran_pcfich_set_cell(srsran_pcfich_t* q, srsran_regs_t* regs, srsran_cell_t cell);
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SRSRAN_API void srsran_pcfich_free(srsran_pcfich_t* q);
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SRSRAN_API int srsran_pcfich_decode(srsran_pcfich_t* q,
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srsran_dl_sf_cfg_t* sf,
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srsran_chest_dl_res_t* channel,
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cf_t* sf_symbols[SRSRAN_MAX_PORTS],
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float* corr_result);
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SRSRAN_API int srsran_pcfich_encode(srsran_pcfich_t* q, srsran_dl_sf_cfg_t* sf, cf_t* sf_symbols[SRSRAN_MAX_PORTS]);
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#endif // SRSRAN_PCFICH_H
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