1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* -*- c++ -*- */
/*
* Copyright 2020 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_DIGITAL_LINEAR_EQUALIZER_IMPL_H
#define INCLUDED_DIGITAL_LINEAR_EQUALIZER_IMPL_H
#include "equalizer.h"
#include <gnuradio/digital/linear_equalizer.h>
#include <gnuradio/filter/fir_filter.h>
#include <stdexcept>
namespace gr {
namespace digital {
class linear_equalizer_impl : public linear_equalizer, filter::kernel::fir_filter_ccc
{
private:
const unsigned d_num_taps;
const unsigned d_sps;
adaptive_algorithm_sptr d_alg;
const bool d_adapt_after_training;
const std::vector<gr_complex> d_training_sequence;
const pmt::pmt_t d_training_start_tag;
std::vector<gr_complex> d_new_taps;
bool d_updated;
gr_complex d_error;
gr_complex d_decision;
equalizer_state_t d_training_state;
unsigned int d_training_sample;
mutable gr::thread::mutex d_mutex;
public:
linear_equalizer_impl(unsigned num_taps,
unsigned sps,
adaptive_algorithm_sptr alg,
bool adapt_after_training,
std::vector<gr_complex> training_sequence,
const std::string& training_start_tag);
~linear_equalizer_impl(){};
void set_taps(const std::vector<gr_complex>& taps);
std::vector<gr_complex> taps() const;
int work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items) override;
// Same as the work function, but more specific and decoupled from the
// scheduler-related actions
int equalize(
const gr_complex* input_samples,
gr_complex* output_symbols,
unsigned int num_inputs,
unsigned int max_num_outputs,
std::vector<unsigned int> training_start_samples = std::vector<unsigned int>(0),
bool history_included = false,
gr_complex* taps = nullptr,
unsigned short* state = nullptr);
};
} // namespace digital
} // namespace gr
#endif /* INCLUDED_DIGITAL_LINEAR_EQUALIZER_IMPL_H */
|
