Fading generator class. More...
#include <itpp/comm/channel.h>
Public Member Functions | |
Fading_Generator () | |
Default constructor. | |
virtual | ~Fading_Generator () |
Destructor. | |
void | set_LOS_power (double relative_power) |
Set relative LOS power. | |
virtual void | set_LOS_doppler (double relative_doppler) |
Set relative Doppler of the LOS component (for correlated fading generators) | |
virtual void | set_time_offset (int offset) |
Set time offset in samples (for correlated fading generators) | |
virtual void | set_filter_length (int filter_length) |
Set FIR filter length (for FIR fading generator) | |
virtual void | set_norm_doppler (double norm_doppler) |
Set normalized Doppler (for correlated fading generators) | |
virtual void | set_doppler_spectrum (DOPPLER_SPECTRUM spectrum) |
Set Doppler spectrum (for Rice fading generator) | |
virtual void | set_no_frequencies (int no_freq) |
Set number of sine frequencies (for Rice fading generator) | |
virtual void | set_rice_method (RICE_METHOD method) |
Set calculation method of Doppler frequencies and amplitudes (for Rice fading generator) | |
double | get_LOS_power () const |
Get relative power of LOS component (Rice factor) | |
virtual double | get_LOS_doppler () const |
Get relative Doppler of the LOS component (for correlated fading generators) | |
virtual double | get_time_offset () const |
Get time offset in samples (for correlated fading generators) | |
virtual int | get_filter_length () const |
Set FIR filter length (for FIR fading generator) | |
virtual double | get_norm_doppler () const |
Return normalized Doppler (for correlated fading generators) | |
virtual DOPPLER_SPECTRUM | get_doppler_spectrum () const |
Return Doppler spectrum (for Rice fading generator) | |
virtual int | get_no_frequencies () const |
Get number of sine frequencies (for Rice fading generator) | |
virtual RICE_METHOD | get_rice_method () const |
Get calculation method of Doppler frequencies and amplitudes (for Rice fading generator) | |
virtual void | shift_time_offset (int no_samples) |
Shift generator time offset by a number of samples (for correlated fading generators) | |
virtual void | init ()=0 |
Initialize the generator. | |
virtual void | generate (int no_samples, cvec &output)=0 |
Generate no_samples values from the fading process. | |
cvec | generate (int no_samples) |
Generate no_samples values from the fading process. | |
Protected Attributes | |
bool | init_flag |
signals if generator is initialized or not | |
double | los_power |
Relative power of LOS component compared to diffuse component (K factor) | |
double | los_diffuse |
Diffuse component: sqrt(1 / (1 + los_power)) | |
double | los_direct |
Direct component: sqrt(los_power / (1 + los_power)) | |
Fading generator class.
Abstract base class defining the interface of a single tap fading generator. Besides pure interface methods it implements a common set_LOS_power() method for setting up the Rice factor to be used in fading generators, which inherit from this class.
itpp::Fading_Generator::Fading_Generator | ( | ) |
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inlinevirtual |
void itpp::Fading_Generator::set_LOS_power | ( | double | relative_power | ) |
Set relative LOS power.
Definition at line 57 of file channel.cpp.
References it_assert, los_diffuse, los_direct, and los_power.
Referenced by Fading_Generator().
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virtual |
Set relative Doppler of the LOS component (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 66 of file channel.cpp.
References it_warning.
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virtual |
Set time offset in samples (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 71 of file channel.cpp.
References it_warning.
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virtual |
Set FIR filter length (for FIR fading generator)
Reimplemented in itpp::FIR_Fading_Generator.
Definition at line 81 of file channel.cpp.
References it_warning.
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virtual |
Set normalized Doppler (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 76 of file channel.cpp.
References it_warning.
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virtual |
Set Doppler spectrum (for Rice fading generator)
Reimplemented in itpp::Rice_Fading_Generator.
Definition at line 86 of file channel.cpp.
References it_warning.
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virtual |
Set number of sine frequencies (for Rice fading generator)
Reimplemented in itpp::Rice_Fading_Generator.
Definition at line 91 of file channel.cpp.
References it_warning.
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virtual |
Set calculation method of Doppler frequencies and amplitudes (for Rice fading generator)
Reimplemented in itpp::Rice_Fading_Generator.
Definition at line 96 of file channel.cpp.
References it_warning.
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inline |
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virtual |
Get relative Doppler of the LOS component (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 101 of file channel.cpp.
References it_warning.
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virtual |
Get time offset in samples (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 107 of file channel.cpp.
References it_warning.
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virtual |
Set FIR filter length (for FIR fading generator)
Reimplemented in itpp::FIR_Fading_Generator.
Definition at line 113 of file channel.cpp.
References it_warning.
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virtual |
Return normalized Doppler (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 119 of file channel.cpp.
References it_warning.
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virtual |
Return Doppler spectrum (for Rice fading generator)
Reimplemented in itpp::Rice_Fading_Generator.
Definition at line 125 of file channel.cpp.
References it_warning.
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virtual |
Get number of sine frequencies (for Rice fading generator)
Reimplemented in itpp::Rice_Fading_Generator.
Definition at line 131 of file channel.cpp.
References it_warning.
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virtual |
Get calculation method of Doppler frequencies and amplitudes (for Rice fading generator)
Reimplemented in itpp::Rice_Fading_Generator.
Definition at line 137 of file channel.cpp.
References it_warning.
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virtual |
Shift generator time offset by a number of samples (for correlated fading generators)
Reimplemented in itpp::Correlated_Fading_Generator.
Definition at line 143 of file channel.cpp.
References it_warning.
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pure virtual |
Initialize the generator.
Implemented in itpp::Correlated_Fading_Generator, itpp::FIR_Fading_Generator, itpp::IFFT_Fading_Generator, itpp::Independent_Fading_Generator, itpp::Rice_Fading_Generator, and itpp::Static_Fading_Generator.
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pure virtual |
Generate no_samples values from the fading process.
Implemented in itpp::Correlated_Fading_Generator, itpp::FIR_Fading_Generator, itpp::IFFT_Fading_Generator, itpp::Independent_Fading_Generator, itpp::Rice_Fading_Generator, and itpp::Static_Fading_Generator.
Referenced by generate().
cvec itpp::Fading_Generator::generate | ( | int | no_samples | ) |
Generate no_samples values from the fading process.
Definition at line 148 of file channel.cpp.
References generate().
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protected |
signals if generator is initialized or not
Definition at line 282 of file channel.h.
Referenced by itpp::FIR_Fading_Generator::generate(), itpp::IFFT_Fading_Generator::generate(), itpp::Independent_Fading_Generator::generate(), itpp::Rice_Fading_Generator::generate(), itpp::Static_Fading_Generator::generate(), itpp::Static_Fading_Generator::init(), itpp::Rice_Fading_Generator::set_doppler_spectrum(), itpp::FIR_Fading_Generator::set_filter_length(), itpp::Rice_Fading_Generator::set_no_frequencies(), itpp::Correlated_Fading_Generator::set_norm_doppler(), and itpp::Rice_Fading_Generator::set_rice_method().
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protected |
Relative power of LOS component compared to diffuse component (K factor)
Definition at line 283 of file channel.h.
Referenced by itpp::FIR_Fading_Generator::generate(), itpp::IFFT_Fading_Generator::generate(), itpp::Independent_Fading_Generator::generate(), itpp::Rice_Fading_Generator::generate(), itpp::Static_Fading_Generator::init(), and set_LOS_power().
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protected |
Diffuse component: sqrt(1 / (1 + los_power))
Definition at line 284 of file channel.h.
Referenced by itpp::Correlated_Fading_Generator::add_LOS(), itpp::Independent_Fading_Generator::generate(), itpp::Static_Fading_Generator::init(), and set_LOS_power().
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protected |
Direct component: sqrt(los_power / (1 + los_power))
Definition at line 285 of file channel.h.
Referenced by itpp::Correlated_Fading_Generator::add_LOS(), itpp::Independent_Fading_Generator::generate(), itpp::Static_Fading_Generator::init(), and set_LOS_power().
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