55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/*
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* Copyright (c) 2013, Ismael Gomez-Miguelez <gomezi@tcd.ie>.
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* This file is part of OSLD-lib (http://https://github.com/ismagom/osld-lib)
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*
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* OSLD-lib is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OSLD-lib 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OSLD-lib. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef REFSIGNAL_
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#define REFSIGNAL_
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/* Object to manage reference signals for OFDM channel equalization.
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*
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* It generates the reference signals for LTE.
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*
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*/
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#include "lte/base.h"
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typedef _Complex float cf_t;
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typedef struct {
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int time_idx;
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int freq_idx;
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cf_t simbol;
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cf_t recv_simbol;
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}ref_t;
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typedef struct {
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int nof_refs; // number of reference signals
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int *symbols_ref; // symbols with at least one reference
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int nsymbols; // number of symbols with at least one reference
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int voffset; // offset of the first reference in the freq domain
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ref_t *refs;
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cf_t *ch_est;
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} refsignal_t;
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int refsignal_init_LTEDL(refsignal_t *q, int port_id, int nslot,
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int cell_id, lte_cp_t cp, int nof_prb);
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void refsignal_free(refsignal_t *q);
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#endif
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