GNU Radio 3.6.4.1 C++ API
adaptive_fir_ccf.h
Go to the documentation of this file.
1
/* -*- c++ -*- */
2
/*
3
* Copyright 2011,2012 Free Software Foundation, Inc.
4
*
5
* This file is part of GNU Radio
6
*
7
* GNU Radio is free software; you can redistribute it and/or modify
8
* it under the terms of the GNU General Public License as published by
9
* the Free Software Foundation; either version 3, or (at your option)
10
* any later version.
11
*
12
* GNU Radio is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15
* GNU General Public License for more details.
16
*
17
* You should have received a copy of the GNU General Public License
18
* along with GNU Radio; see the file COPYING. If not, write to
19
* the Free Software Foundation, Inc., 51 Franklin Street,
20
* Boston, MA 02110-1301, USA.
21
*/
22
23
#ifndef INCLUDED_FILTER_ADAPTIVE_FIR_CCF_H
24
#define INCLUDED_FILTER_ADAPTIVE_FIR_CCF_H
25
26
#include <
filter/api.h
>
27
#include <
gr_sync_decimator.h
>
28
29
namespace
gr {
30
namespace
filter {
31
32
/*!
33
* \brief Adaptive FIR filter with gr_complex input, gr_complex output and float taps
34
* \ingroup filter_blk
35
*
36
* This is a base class to implement an adaptive FIR
37
* filter. Generally, another block will inherit from this one to
38
* build a new type of adaptive filter such as an equalizer.
39
*
40
* This class implements two functions that are designed to be
41
* overloaded by the child class: error(gr_complex out) and
42
* update_tap(float tap, gr_complex in).
43
*
44
* The error() function calculates the error value that will be
45
* used to adjust the taps. The update_tap function then uses the
46
* error and the input signal value to update a particular
47
* tap. Typically, the error is calculated for a given output and
48
* then this is used in a loop to update all of the filter taps in
49
* a loop:
50
*
51
* \code
52
* d_error = error(sum);
53
* for(k = 0; k < l; k++) {
54
* update_tap(d_taps[ntaps-k-1], in[i+k]);
55
* }
56
* \endcode
57
*/
58
class
FILTER_API
adaptive_fir_ccf
:
virtual
public
gr_sync_decimator
59
{
60
public
:
61
// gr::filter::adaptive_fir_ccf::sptr
62
typedef
boost::shared_ptr<adaptive_fir_ccf>
sptr
;
63
64
/*!
65
* \brief Adaptive FIR filter with gr_complex input, gr_complex output and float taps
66
*
67
* \param name Provides a name to identify this type of algorithm
68
* \param decimation (interger) decimation rate of the filter
69
* \param taps (real) filter taps
70
*/
71
static
sptr
make(
const
char
*name,
int
decimation,
72
const
std::vector<float> &
taps
);
73
74
virtual
void
set_taps(
const
std::vector<float> &
taps
) = 0;
75
virtual
std::vector<float>
taps
() = 0;
76
};
77
78
}
/* namespace filter */
79
}
/* namespace gr */
80
81
#endif
/* INCLUDED_FILTER_ADAPTIVE_FIR_CCF_H */
gr-filter
include
filter
adaptive_fir_ccf.h
Generated on Sun Apr 28 2013 20:26:34 for GNU Radio 3.6.4.1 C++ API by
1.8.3.1