GNU Radio Manual and C++ API Reference 3.8.5.0
The Free & Open Software Radio Ecosystem
 
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cfo_model.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2009,2012 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_CHANNELS_CFO_MODEL_H
24#define INCLUDED_CHANNELS_CFO_MODEL_H
25
27#include <gnuradio/sync_block.h>
28#include <gnuradio/types.h>
29
30namespace gr {
31namespace channels {
32
33/*!
34 * \brief channel simulator
35 * \ingroup channel_models_blk
36 *
37 * \details
38 * This block implements a carrier frequency offset model that
39 * can be used to simulate carrier frequency drift typically from
40 * mixer LO drift on either transmit or receive hardware.
41 *
42 * A clipped gaussian random walk process is used.
43 */
44class CHANNELS_API cfo_model : virtual public sync_block
45{
46public:
47 // gr::channels::cfo_model::sptr
48 typedef boost::shared_ptr<cfo_model> sptr;
49
50 /*! \brief Build the carrier frequency offset model
51 *
52 * \param sample_rate_hz Sample rate of the input signal in Hz
53 * \param std_dev_hz Desired standard deviation of the random walk
54 process every sample in Hz
55 * \param max_dev_hz Maximum carrier frequency deviation in Hz.
56 * \param noise_seed A random number generator seed for the noise source.
57 */
58 static sptr make(double sample_rate_hz,
59 double std_dev_hz,
60 double max_dev_hz,
61 double noise_seed = 0);
62
63 virtual void set_std_dev(double _dev) = 0;
64 virtual void set_max_dev(double _dev) = 0;
65 virtual void set_samp_rate(double _rate) = 0;
66
67 virtual double std_dev() const = 0;
68 virtual double max_dev() const = 0;
69 virtual double samp_rate() const = 0;
70};
71
72} /* namespace channels */
73} /* namespace gr */
74
75#endif /* INCLUDED_CHANNELS_CFO_MODEL_H */
channel simulator
Definition cfo_model.h:45
virtual double max_dev() const =0
static sptr make(double sample_rate_hz, double std_dev_hz, double max_dev_hz, double noise_seed=0)
Build the carrier frequency offset model.
virtual double samp_rate() const =0
virtual void set_max_dev(double _dev)=0
virtual void set_samp_rate(double _rate)=0
virtual double std_dev() const =0
boost::shared_ptr< cfo_model > sptr
Definition cfo_model.h:48
virtual void set_std_dev(double _dev)=0
synchronous 1:1 input to output with history
Definition sync_block.h:38
#define CHANNELS_API
Definition gr-channels/include/gnuradio/channels/api.h:30
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition basic_block.h:46