GNU Radio Manual and C++ API Reference 3.10.5.1
The Free & Open Software Radio Ecosystem
selective_fading_model.h
Go to the documentation of this file.
1/* -*- c++ -*- */
2/*
3 * Copyright 2013 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * SPDX-License-Identifier: GPL-3.0-or-later
8 *
9 */
10
11#ifndef INCLUDED_CHANNELS_SELECTIVE_FADING_MODEL_H
12#define INCLUDED_CHANNELS_SELECTIVE_FADING_MODEL_H
13
15#include <gnuradio/sync_block.h>
16#include <gnuradio/types.h>
17
18namespace gr {
19namespace channels {
20
21constexpr float default_delays[] = { 0.0, 0.1, 0.5 };
22constexpr float default_mags[] = { 1.0, 0.8, 0.3 };
23
24/*!
25 * \brief fading simulator
26 * \ingroup channel_models_blk
27 *
28 * \details
29 * This block implements a basic fading model simulator that can
30 * be used to help evaluate, design, and test various signals,
31 * waveforms, and algorithms.
32 */
34{
35public:
36 // gr::channels::channel_model::sptr
37 typedef std::shared_ptr<selective_fading_model> sptr;
38
39 /*! \brief Build the channel simulator.
40 *
41 * \param N the number of sinusoids to use in simulating the channel; 8 is a good
42 * value \param fDTs normalized maximum Doppler frequency, fD * Ts \param LOS
43 * include Line-of-Site path? selects between Rayleigh (NLOS) and Rician (LOS) models
44 * \param K Rician factor (ratio of the specular power to the scattered power)
45 * \param seed a random number to seed the noise generators
46 * \param delays a vector of values that specify the time delay of each impulse
47 * \param mags a vector of values that specify the magnitude of each impulse
48 * \param ntaps the number of filter taps
49 */
50 static sptr make(unsigned int N,
51 float fDTs,
52 bool LOS,
53 float K,
54 int seed,
55 std::vector<float> delays,
56 std::vector<float> mags,
57 int ntaps);
58
59 virtual float fDTs() = 0;
60 virtual float K() = 0;
61 virtual float step() = 0;
62
63 virtual void set_fDTs(float fDTs) = 0;
64 virtual void set_K(float K) = 0;
65 virtual void set_step(float step) = 0;
66};
67
68} /* namespace channels */
69} /* namespace gr */
70
71#endif /* INCLUDED_CHANNELS_SELECTIVE_FADING_MODEL_H */
fading simulator
Definition: selective_fading_model.h:34
virtual void set_K(float K)=0
std::shared_ptr< selective_fading_model > sptr
Definition: selective_fading_model.h:37
virtual void set_step(float step)=0
static sptr make(unsigned int N, float fDTs, bool LOS, float K, int seed, std::vector< float > delays, std::vector< float > mags, int ntaps)
Build the channel simulator.
virtual void set_fDTs(float fDTs)=0
synchronous 1:1 input to output with history
Definition: sync_block.h:26
#define CHANNELS_API
Definition: gr-channels/include/gnuradio/channels/api.h:18
constexpr float default_mags[]
Definition: selective_fading_model.h:22
constexpr float default_delays[]
Definition: selective_fading_model.h:21
GNU Radio logging wrapper.
Definition: basic_block.h:29