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
88
89
90
|
/* -*- c++ -*- */
/*
* Copyright 2013 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_CHANNELS_SELECTIVE_FADING_MODEL2_H
#define INCLUDED_CHANNELS_SELECTIVE_FADING_MODEL2_H
#include <gnuradio/channels/api.h>
#include <gnuradio/sync_block.h>
#include <gnuradio/types.h>
namespace gr {
namespace channels {
const float default_delays2[] = {1.0,1.9,2.7};
const float default_mags2[] = {1.0,0.95,0.8};
/*!
* \brief fading simulator
* \ingroup channel_models_blk
*
* \details
* This block implements a basic fading model simulator that can
* be used to help evaluate, design, and test various signals,
* waveforms, and algorithms.
*/
class CHANNELS_API selective_fading_model2 : virtual public sync_block
{
public:
// gr::channels::channel_model2::sptr
typedef boost::shared_ptr<selective_fading_model2> sptr;
/*! \brief Build the channel simulator.
*
* \param N the number of sinusoids to use in simulating the channel; 8 is a good value
* \param fDTs normalized maximum Doppler frequency, fD * Ts
* \param LOS include Line-of-Site path? selects between Rayleigh (NLOS) and Rician (LOS) models
* \param K Rician factor (ratio of the specular power to the scattered power)
* \param seed a random number to seed the noise generators
* \param delays a vector of values that specify the time delay of each impulse
* \param delay_std a vector of values that specify the gaussian step size std of delays
* \param delay_maxdev a vector of values that specify the max deviation of each delay component
* \param mags a vector of values that specify the magnitude of each impulse
* \param mags a vector of values that specify the magnitude of each impulse
* \param ntaps the number of filter taps
*/
static sptr make(unsigned int N,
float fDTs,
bool LOS,
float K,
int seed,
std::vector<float> delays,
std::vector<float> delay_std,
std::vector<float> delay_maxdev,
std::vector<float> mags,
int ntaps
);
virtual float fDTs() = 0;
virtual float K() = 0;
virtual float step() = 0;
virtual void set_fDTs(float fDTs) = 0;
virtual void set_K(float K) = 0;
virtual void set_step(float step) = 0;
};
} /* namespace channels */
} /* namespace gr */
#endif /* INCLUDED_CHANNELS_SELECTIVE_FADING_MODEL2_H */
|
