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54 lines
1.8 KiB
C
54 lines
1.8 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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#ifndef SRSRAN_REFSIGNAL_DL_SYNC_H_
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#define SRSRAN_REFSIGNAL_DL_SYNC_H_
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#include <srsran/phy/ch_estimation/refsignal_dl.h>
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#include <srsran/phy/dft/ofdm.h>
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#include <srsran/phy/utils/convolution.h>
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typedef struct {
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srsran_refsignal_t refsignal;
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srsran_ofdm_t ifft;
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cf_t* ifft_buffer_in;
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cf_t* ifft_buffer_out;
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cf_t* sequences[SRSRAN_NOF_SF_X_FRAME];
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cf_t* correlation;
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srsran_conv_fft_cc_t conv_fft_cc;
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// Results
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bool found;
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float rsrp_dBfs;
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float rssi_dBfs;
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float rsrq_dB;
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float cfo_Hz;
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uint32_t peak_index;
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} srsran_refsignal_dl_sync_t;
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SRSRAN_API int srsran_refsignal_dl_sync_init(srsran_refsignal_dl_sync_t* q, srsran_cp_t cp);
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SRSRAN_API int srsran_refsignal_dl_sync_set_cell(srsran_refsignal_dl_sync_t* q, srsran_cell_t cell);
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SRSRAN_API void srsran_refsignal_dl_sync_free(srsran_refsignal_dl_sync_t* q);
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SRSRAN_API int srsran_refsignal_dl_sync_run(srsran_refsignal_dl_sync_t* q, cf_t* buffer, uint32_t nsamples);
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SRSRAN_API void srsran_refsignal_dl_sync_measure_sf(srsran_refsignal_dl_sync_t* q,
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cf_t* buffer,
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uint32_t sf_idx,
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float* rsrp,
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float* rssi,
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float* cfo);
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#endif // SRSRAN_REFSIGNAL_DL_SYNC_H_
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