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
|
/* -*- c++ -*- */
/*
* Copyright 2009,2011,2012,2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H
#define INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H
#include <gnuradio/blocks/control_loop.h>
#include <gnuradio/digital/fll_band_edge_cc.h>
#include <gnuradio/filter/fir_filter_with_buffer.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::unique_ptr<gr::filter::kernel::fir_filter_with_buffer_ccc> d_filter_lower;
std::unique_ptr<gr::filter::kernel::fir_filter_with_buffer_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);
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) override;
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_FLL_BAND_EDGE_CC_IMPL_H */
|
