Background noise model for wireless communications that represents ambient noise as a power spectral density function of time and frequency. Supports configurable time-varying and frequency-varying gain patterns with various interpolation methods. Used to model realistic noise conditions in wireless channel simulations.

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Extends

Name	Type	Description
Module	compound module	Base module for all INET compound modules.

Parameters

Name	Type	Default value	Description
displayStringTextFormat	string	""	Determines the text that is written on top of the submodule, supports displaying pars, watches, and module-specific information
gainFunctionCacheLimit	int	0	Limits the number of gain functions cached for a given duration, centerFrequency and bandwidth
timeGains	string	"left 0s 0dB left"	Sequence of interpolation methods, time, gain tuples; time can be an expression, gain is in [dB] or [0..inf); default value is a flat signal
timeGainsNormalization	string	""	Determines how the time gains function is normalized, no normalization by default
frequencyGains	string	"left 0Hz 0dB left"	Sequence of interpolation methods, frequency, gain tuples; frequency can be an expression, gain is in [dB] or [0..1]; default value is a flat signal
frequencyGainsNormalization	string	"integral"	Determines how the frequency gains function is normalized, integral normalization by default
power	double		Noise power

Properties

Name	Value	Description
class	DimensionalBackgroundNoise
display	i=block/mac

Source code

//
// Background noise model for wireless communications that represents ambient
// noise as a power spectral density function of time and frequency.
// Supports configurable time-varying and frequency-varying gain patterns
// with various interpolation methods. Used to model realistic noise
// conditions in wireless channel simulations.
//
module DimensionalBackgroundNoise extends Module like IBackgroundNoise
{
    parameters:
        int gainFunctionCacheLimit = default(0); // Limits the number of gain functions cached for a given duration, centerFrequency and bandwidth
        string timeGains = default("left 0s 0dB left"); // Sequence of interpolation methods, time, gain tuples; time can be an expression, gain is in [dB] or [0..inf); default value is a flat signal
        string timeGainsNormalization @enum("","maximum","integral") = default(""); // Determines how the time gains function is normalized, no normalization by default
        string frequencyGains = default("left 0Hz 0dB left"); // Sequence of interpolation methods, frequency, gain tuples; frequency can be an expression, gain is in [dB] or [0..1]; default value is a flat signal
        string frequencyGainsNormalization @enum("","maximum","integral") = default("integral"); // Determines how the frequency gains function is normalized, integral normalization by default
        double power @unit(dBm); // Noise power
        @class(DimensionalBackgroundNoise);
        @display("i=block/mac");
}

File: src/inet/physicallayer/wireless/common/backgroundnoise/DimensionalBackgroundNoise.ned

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