Apply receiver thermal noise to complex baseband signal
The Receiver Thermal Noise block simulates the effects of thermal noise on a complex, baseband signal. You can specify the amount of thermal noise in three ways, according to which Specification method you select:
Noise temperature specifies
the noise in degrees kelvin.
Noise factor specifies
the noise as 1+(Noise temperature / 290).
Noise figure specifies
the noise as 10*log10(1+(Noise temperature / 290)).
This is the decibel equivalent of Noise factor.
The following scatter plot shows the effect of the Receiver
Thermal Noise block, with Specification method set
Noise figure and Noise figure
(dB) set to
3.01, on a signal modulated
This plot is generated by the model described in Illustrate RF Impairments That Distort a Signal with the following parameter settings:
Rectangular QAM Modulator Baseband
Normalization method set to
Average power (watts) set to
Receiver Thermal Noise
Specification method set to
Noise figure (dB) set to
The method by which you specify the amount of noise. The choices
Scalar specifying the amount of noise in degrees kelvin.
Scalar specifying the amount of noise in decibels relative to a noise temperature of 290 degrees kelvin. A Noise figure setting of 0 dB indicates a noiseless system.
Scalar specifying the amount of noise relative to a noise temperature of 290 degrees kelvin.
The initial seed value for the random number generator that generates the noise.