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59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
5 years ago
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/*
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* Copyright 2013-2019 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSLTE_REFSIGNAL_DL_SYNC_H_
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#define SRSLTE_REFSIGNAL_DL_SYNC_H_
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#include <srslte/phy/ch_estimation/refsignal_dl.h>
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#include <srslte/phy/dft/ofdm.h>
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#include <srslte/phy/utils/convolution.h>
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typedef struct {
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srslte_refsignal_t refsignal;
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srslte_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[SRSLTE_NOF_SF_X_FRAME];
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cf_t* correlation;
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srslte_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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} srslte_refsignal_dl_sync_t;
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SRSLTE_API int srslte_refsignal_dl_sync_init(srslte_refsignal_dl_sync_t* q);
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SRSLTE_API int srslte_refsignal_dl_sync_set_cell(srslte_refsignal_dl_sync_t* q, srslte_cell_t cell);
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SRSLTE_API void srslte_refsignal_dl_sync_free(srslte_refsignal_dl_sync_t* q);
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SRSLTE_API void srslte_refsignal_dl_sync_run(srslte_refsignal_dl_sync_t* q, cf_t* buffer, uint32_t nsamples);
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SRSLTE_API void srslte_refsignal_dl_sync_measure_sf(
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srslte_refsignal_dl_sync_t* q, cf_t* buffer, uint32_t sf_idx, float* rsrp, float* rssi, float* cfo);
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#endif // SRSLTE_REFSIGNAL_DL_SYNC_H_
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