Simulating Fading, Adding Noise and Predistortions, and Impairing the Signal
R&S
®
SMW200A
425User Manual 1175.6632.02 ─ 30
"Noise Bandwidth" = "System BW" x "Minimum Noise/System BW Ratio"
The parameter Noise Bandwidth displays the resulting noise bandwidth. Because the
noise power density is a constant value, increasing the noise/system bandwidth ratio
increases the noise bandwidth.
The calculation of level from the selected C/N or S/N ratio in relation to system band-
width is not influenced.
Remote command:
[:SOURce<hw>]:AWGN:BWIDth:RATio on page 1093
Center Frequency Offset
Option: R&S SMW-B9
Requires "Mode > Additive Noise/Noise Only".
Defines the frequency offset of the noise signal relative to the carrier center frequency.
Use the setting to shift noise signals relative to the output RF signal.
Remote command:
[:SOURce<hw>]:AWGN:FREQuency:CENTer:OFFSet on page 1097
Target CW Frequency Offset
In "CW Interferer" mode, sets the desired frequency of the sine wave.
Remote command:
[:SOURce<hw>]:AWGN:FREQuency:TARGet on page 1097
6.2.4.2 Noise Power/Output Results Settings
Access:
► Select "AWGN > Noise Power/Output Results".
Adding Noise to the Signal
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