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/* -*- c++ -*- */
/*
* Copyright 2009,2011,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H
#define INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H
#include <gnuradio/digital/fll_band_edge_cc.h>
#include <gnuradio/blocks/control_loop.h>
#include <gnuradio/filter/fir_filter.h>
namespace gr {
namespace digital {
class fll_band_edge_cc_impl :
public fll_band_edge_cc
{
private:
float d_sps;
float d_rolloff;
int d_filter_size;
std::vector<gr_complex> d_taps_lower;
std::vector<gr_complex> d_taps_upper;
bool d_updated;
std::vector<gr_complex> d_output_hist;
std::vector<gr_complex> d_fllbuffer;
gr::filter::kernel::fir_filter_ccc* d_filter_lower;
gr::filter::kernel::fir_filter_ccc* d_filter_upper;
/*!
* Design the band-edge filter based on the number of samples
* per symbol, filter rolloff factor, and the filter size
*
* \param samps_per_sym (float) Number of samples per symbol of signal
* \param rolloff (float) Rolloff factor of signal
* \param filter_size (int) Size (in taps) of the filter
*/
void design_filter(float samps_per_sym, float rolloff, int filter_size);
public:
fll_band_edge_cc_impl(float samps_per_sym, float rolloff,
int filter_size, float bandwidth);
~fll_band_edge_cc_impl();
void set_samples_per_symbol(float sps);
void set_rolloff(float rolloff);
void set_filter_size(int filter_size);
float samples_per_symbol() const;
float rolloff() const;
int filter_size() const;
void print_taps();
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H */
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