mirror of https://github.com/PentHertz/srsLTE.git
51 lines
1.7 KiB
C
51 lines
1.7 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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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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/* Thresholds for Demodulation */
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/* Assume perfect amplitude and phase alignment.
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* Check threshold values for real case
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* or implement dynamic threshold adjustent as a function of received symbol amplitudes */
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#define QAM16_THRESHOLD 2/sqrt(10)
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#define QAM64_THRESHOLD_1 2/sqrt(42)
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#define QAM64_THRESHOLD_2 4/sqrt(42)
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#define QAM64_THRESHOLD_3 6/sqrt(42)
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void hard_bpsk_demod(const cf_t* in,
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uint8_t* out,
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uint32_t N);
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void hard_qpsk_demod(const cf_t* in,
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uint8_t* out,
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uint32_t N);
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void hard_qam16_demod(const cf_t* in,
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uint8_t* out,
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uint32_t N);
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void hard_qam64_demod(const cf_t* in,
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uint8_t* out,
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uint32_t N);
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