mirror of https://github.com/gnss-sdr/gnss-sdr
90 lines
3.5 KiB
C++
90 lines
3.5 KiB
C++
/*!
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* \file nco_lib.h
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* \brief A set of Numeric Controlled Oscillator (NCO) functions to generate the carrier wipeoff signal,
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* regardless of system used
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*
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* \author Javier Arribas 2012, jarribas(at)cttc.es
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*
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* Detailed description of the file here if needed.
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*
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* -------------------------------------------------------------------------
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*
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* Copyright (C) 2010-2012 (see AUTHORS file for a list of contributors)
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*
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* GNSS-SDR is a software defined Global Navigation
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* Satellite Systems receiver
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*
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* This file is part of GNSS-SDR.
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*
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* GNSS-SDR is free software: you can redistribute it and/or modify
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* it under the terms of the GNU 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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* GNSS-SDR 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
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*
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* -------------------------------------------------------------------------
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*/
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#ifndef GNSS_SDR_NCO_LIB_CC_H_
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#define GNSS_SDR_NCO_LIB_CC_H_
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#include <gnuradio/fxpt.h>
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#include <xmmintrin.h>
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#include <sse_mathfun.h>
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#include <cmath>
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/*!
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* \brief Implements a complex conjugate exponential vector in std::complex<float> *d_carr_sign
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* containing int n_samples, with the starting phase float start_phase_rad and the pase step between vector elements
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* float phase_step_rad. This function uses a SSE CORDIC implementation.
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*
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*/
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void sse_nco(std::complex<float> *dest, int n_samples,float start_phase_rad, float phase_step_rad);
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/*!
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* \brief Implements a complex conjugate exponential vector in std::complex<float> *d_carr_sign
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* containing int n_samples, with the starting phase float start_phase_rad and the pase step between vector elements
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* float phase_step_rad. This function uses the GNU Radio fixed point CORDIC implementation.
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*
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*/
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void fxp_nco(std::complex<float> *dest, int n_samples,float start_phase_rad, float phase_step_rad);
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/*!
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* \brief Implements a complex conjugate exponential vector in std::complex<float> *d_carr_sign
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* containing int n_samples, with the starting phase float start_phase_rad and the pase step between vector elements
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* float phase_step_rad. This function uses the stdlib sin() and cos() implementation.
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*
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*/
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void std_nco(std::complex<float> *dest, int n_samples,float start_phase_rad, float phase_step_rad);
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/*!
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* \brief Implements a complex conjugate exponential vector in std::complex<float> *d_carr_sign
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* containing int n_samples, with the starting phase float start_phase_rad and the pase step between vector elements
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* float phase_step_rad. This function uses the GNU Radio fixed point CORDIC implementation.
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*
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*/
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void fxp_nco_cpyref(std::complex<float> *dest, int n_samples,float start_phase_rad, float phase_step_rad);
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/*!
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* \brief Implements a complex conjugate exponential vector in two separated float arrays (In-phase and Quadrature)
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* containing int n_samples, with the starting phase float start_phase_rad and the pase step between vector elements
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* float phase_step_rad. This function uses the GNU Radio fixed point CORDIC implementation.
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*
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*/
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void fxp_nco_IQ_split(float* I, float* Q, int n_samples,float start_phase_rad, float phase_step_rad);
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#endif //NCO_LIB_CC_H
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