modulator_kernel_cc.h
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/* -*- c++ -*- */
/*
* Copyright 2016 Johannes Demel.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GFDM_MODULATOR_KERNEL_CC_H
#define INCLUDED_GFDM_MODULATOR_KERNEL_CC_H
#include <complex>
#include <vector>
#include <boost/shared_ptr.hpp>
#include <fftw3.h>
#include <stdexcept>
namespace gr {
namespace gfdm {
/*!
* \brief modulate a GFDM block.
* This class initializes and performs all operations necessary to modulate a GFDM block.
*
*/
class modulator_kernel_cc
{
public:
typedef std::complex<float> gfdm_complex;
typedef boost::shared_ptr<modulator_kernel_cc> sptr;
modulator_kernel_cc(int n_timeslots, int n_subcarriers, int overlap, std::vector<gfdm_complex> frequency_taps);
~modulator_kernel_cc();
void generic_work(gfdm_complex* p_out, const gfdm_complex* p_in);
int block_size(){return d_n_subcarriers * d_n_timeslots;};
std::vector<gfdm_complex> filter_taps();
private:
int d_n_timeslots;
int d_n_subcarriers;
int d_ifft_len;
int d_overlap;
gfdm_complex* d_filter_taps;
fftwf_plan initialize_fft(gfdm_complex* out_buf, gfdm_complex* in_buf, const int fft_size, bool forward);
void initialize_taps_vector(gfdm_complex* filter_taps, std::vector<gfdm_complex> frequency_taps, const int n_timeslots);
gfdm_complex* d_sub_fft_in;
gfdm_complex* d_sub_fft_out;
fftwf_plan d_sub_fft_plan;
gfdm_complex* d_filtered;
gfdm_complex* d_ifft_in;
gfdm_complex* d_ifft_out;
fftwf_plan d_ifft_plan;
// DEBUG function
const void print_vector(const gfdm_complex* v, const int size);
static bool complex_compare(gfdm_complex i, gfdm_complex j) { return std::abs(i) < std::abs(j); };
};
} // namespace gfdm
} // namespace gr
#endif /* INCLUDED_GFDM_MODULATOR_KERNEL_CC_H */
gr::gfdm::modulator_kernel_cc
modulate a GFDM block. This class initializes and performs all operations necessary to modulate a GFD...
Definition modulator_kernel_cc.h:41
gr::gfdm::modulator_kernel_cc::generic_work
void generic_work(gfdm_complex *p_out, const gfdm_complex *p_in)
gr::gfdm::modulator_kernel_cc::modulator_kernel_cc
modulator_kernel_cc(int n_timeslots, int n_subcarriers, int overlap, std::vector< gfdm_complex > frequency_taps)
gr::gfdm::modulator_kernel_cc::sptr
boost::shared_ptr< modulator_kernel_cc > sptr
Definition modulator_kernel_cc.h:44
gr::gfdm::modulator_kernel_cc::gfdm_complex
std::complex< float > gfdm_complex
Definition modulator_kernel_cc.h:43
gr::gfdm::modulator_kernel_cc::block_size
int block_size()
Definition modulator_kernel_cc.h:49
gr::gfdm::modulator_kernel_cc::filter_taps
std::vector< gfdm_complex > filter_taps()
gr::gfdm::modulator_kernel_cc::~modulator_kernel_cc
~modulator_kernel_cc()
gr
Definition add_cyclic_prefix_cc.h:30