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gnss-sdr/src/tests/unit-tests/arithmetic/code_generation_test.cc

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/*!
* \file code_generation_test.cc
* \brief This file implements tests for the generation of complex exponentials.
* \author Carles Fernandez-Prades, 2014. cfernandez(at)cttc.es
*
*
* -------------------------------------------------------------------------
*
* Copyright (C) 2010-2019 (see AUTHORS file for a list of contributors)
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*
* GNSS-SDR is a software defined Global Navigation
* Satellite Systems receiver
*
* This file is part of GNSS-SDR.
*
* SPDX-License-Identifier: GPL-3.0-or-later
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*
* -------------------------------------------------------------------------
*/
#include "gnss_signal_processing.h"
#include "gps_sdr_signal_processing.h"
#include <gsl/gsl>
#include <chrono>
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#include <complex>
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TEST(CodeGenerationTest, CodeGenGPSL1Test)
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{
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auto* _dest = new std::complex<float>[1023];
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signed int _prn = 1;
unsigned int _chip_shift = 4;
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int iterations = 1000;
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std::chrono::time_point<std::chrono::system_clock> start, end;
start = std::chrono::system_clock::now();
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for (int i = 0; i < iterations; i++)
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{
gps_l1_ca_code_gen_complex(gsl::span<std::complex<float>>(_dest, 1023), _prn, _chip_shift);
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}
end = std::chrono::system_clock::now();
std::chrono::duration<double> elapsed_seconds = end - start;
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delete[] _dest;
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ASSERT_LE(0, elapsed_seconds.count());
std::cout << "Generation completed in " << elapsed_seconds.count() * 1e6 << " microseconds" << std::endl;
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}
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TEST(CodeGenerationTest, CodeGenGPSL1SampledTest)
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{
signed int _prn = 1;
unsigned int _chip_shift = 4;
double _fs = 8000000.0;
const signed int _codeFreqBasis = 1023000; // Hz
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const signed int _codeLength = 1023;
int _samplesPerCode = round(_fs / static_cast<double>(_codeFreqBasis / _codeLength));
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auto* _dest = new std::complex<float>[_samplesPerCode];
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int iterations = 1000;
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std::chrono::time_point<std::chrono::system_clock> start, end;
start = std::chrono::system_clock::now();
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for (int i = 0; i < iterations; i++)
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{
gps_l1_ca_code_gen_complex_sampled(gsl::span<std::complex<float>>(_dest, _samplesPerCode), _prn, _fs, _chip_shift);
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}
end = std::chrono::system_clock::now();
std::chrono::duration<double> elapsed_seconds = end - start;
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delete[] _dest;
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ASSERT_LE(0, elapsed_seconds.count());
std::cout << "Generation completed in " << elapsed_seconds.count() * 1e6 << " microseconds" << std::endl;
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}
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TEST(CodeGenerationTest, ComplexConjugateTest)
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{
double _fs = 8000000.0;
double _f = 4000.0;
const signed int _codeFreqBasis = 1023000; // Hz
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const signed int _codeLength = 1023;
int _samplesPerCode = round(_fs / static_cast<double>(_codeFreqBasis / _codeLength));
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auto* _dest = new std::complex<float>[_samplesPerCode];
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int iterations = 1000;
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std::chrono::time_point<std::chrono::system_clock> start, end;
start = std::chrono::system_clock::now();
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for (int i = 0; i < iterations; i++)
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{
complex_exp_gen_conj(gsl::span<std::complex<float>>(_dest, _samplesPerCode), _f, _fs);
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}
end = std::chrono::system_clock::now();
std::chrono::duration<double> elapsed_seconds = end - start;
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delete[] _dest;
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ASSERT_LE(0, elapsed_seconds.count());
std::cout << "Generation completed in " << elapsed_seconds.count() * 1e6 << " microseconds" << std::endl;
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}