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/* -*- c++ -*- */
/*
* Copyright 2015 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_FEC_POLAR_ENCODER_SYSTEMATIC_H
#define INCLUDED_FEC_POLAR_ENCODER_SYSTEMATIC_H
#include <gnuradio/fec/api.h>
#include <gnuradio/fec/generic_encoder.h>
#include <gnuradio/fec/polar_common.h>
namespace gr {
namespace fec {
namespace code {
/*!
* \brief systematic POLAR encoder
* for basic details see 'polar_common' class.
* \ingroup error_coding_blk
*
* \details
* expects values with MSB first. It needs a full information word and encodes it in one pass.
* Output is a codeword of block_size.
*/
class FEC_API polar_encoder_systematic: public generic_encoder, public polar_common
{
public:
/*!
* Factory for a polar code encoder object.
*
* \param block_size defines the codeword size. It MUST be a
* power of 2.
* \param num_info_bits represents the number of information
* bits in a block. Also called frame_size.
* \param frozen_bit_positions is an integer vector which
* defines the position of all frozen bits in a block.
* Its size MUST be equal to block_size - num_info_bits.
* Also it must be sorted and every position must only
* occur once. Frozen bit values will be set to ZERO!
*/
static generic_encoder::sptr
make(int block_size, int num_info_bits, std::vector<int> frozen_bit_positions);
// FECAPI
void
generic_work(void *in_buffer, void *out_buffer);
double
rate()
{
return (1.0 * get_input_size() / get_output_size());
}
;
int
get_input_size()
{
return num_info_bits();
}
;
int
get_output_size()
{
return block_size();
}
;
bool
set_frame_size(unsigned int frame_size)
{
return false;
}
;
~polar_encoder_systematic();
private:
polar_encoder_systematic(int block_size, int num_info_bits,
std::vector<int> frozen_bit_positions);
void bit_reverse_and_reset_frozen_bits(unsigned char *outbuf, const unsigned char *inbuf);
unsigned char* d_volk_syst_intermediate;
};
} // namespace code
} // namespace fec
} // namespace gr
#endif /* INCLUDED_FEC_POLAR_ENCODER_SYSTEMATIC_H */
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