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
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/* -*- c++ -*- */
/*
* Copyright 2004,2011,2012 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_CLOCK_RECOVERY_MM_CC_IMPL_H
#define INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_CC_IMPL_H
#include <gnuradio/digital/clock_recovery_mm_cc.h>
#include <gnuradio/filter/mmse_fir_interpolator_cc.h>
namespace gr {
namespace digital {
class clock_recovery_mm_cc_impl : public clock_recovery_mm_cc
{
public:
clock_recovery_mm_cc_impl(float omega, float gain_omega,
float mu, float gain_mu,
float omega_relative_limi);
~clock_recovery_mm_cc_impl();
void forecast(int noutput_items, gr_vector_int &ninput_items_required);
int general_work(int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
float mu() const { return d_mu;}
float omega() const { return d_omega;}
float gain_mu() const { return d_gain_mu;}
float gain_omega() const { return d_gain_omega;}
void set_verbose (bool verbose) { d_verbose = verbose; }
void set_gain_mu (float gain_mu) { d_gain_mu = gain_mu; }
void set_gain_omega (float gain_omega) { d_gain_omega = gain_omega; }
void set_mu (float mu) { d_mu = mu; }
void set_omega (float omega) {
d_omega = omega;
d_min_omega = omega*(1.0 - d_omega_relative_limit);
d_max_omega = omega*(1.0 + d_omega_relative_limit);
d_omega_mid = 0.5*(d_min_omega+d_max_omega);
}
private:
float d_mu; // fractional sample position [0.0, 1.0]
float d_omega; // nominal frequency
float d_gain_omega; // gain for adjusting omega
float d_min_omega; // minimum allowed omega
float d_max_omega; // maximum allowed omeg
float d_omega_relative_limit; // used to compute min and max omega
float d_omega_mid; // average omega
float d_gain_mu; // gain for adjusting mu
gr_complex d_last_sample;
filter::mmse_fir_interpolator_cc *d_interp;
bool d_verbose;
gr_complex d_p_2T, d_p_1T, d_p_0T;
gr_complex d_c_2T, d_c_1T, d_c_0T;
gr_complex slicer_0deg(gr_complex sample);
gr_complex slicer_45deg(gr_complex sample);
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_CLOCK_RECOVERY_MM_CC_IMPL_H */
|
