MATLAB: I can’t find the gaussian noise generator in the simulink

communicationgaussiannoisesimulinktoolbox

i have matlab R2016b, i have installed all the toolboxes(including the communication toolbox, and the DSP) except 9 of the toolboxes(e.g. financial) . i can't find the gaussian noise generator (nor the Noise Generators sublibrary)

Best Answer

You have mentioned that you cannot locate the Gaussian Noise Generator that should be in the Communications System Toolbox according to documentation online:
https://www.mathworks.com/help/comm/ref/gaussiannoisegenerator.html
As mentioned in the documentation for that block, it will be removed in a future release.
If you have a model that contains a Gaussian Noise Generator block, you can always find its parent library by right-clicking the block and selecting > Locked Library Link > Go to Library Block (CTRL+L) or by executing the following command:
commnoisgen2
There are also a few other Simulink blocks that may be easier to find:
1. MATLAB Function and randn
This is the suggested replacement for Gaussian Noise Generator mentioned in the release notes for R2015b, which can be viewed here:
http://www.mathworks.com/help/comm/release-notes.html
Go to R2015b > Functionality being changed or removed
2. AWGN Channel block in the Communications System Toolbox
With this block, you can add white Gaussian noise to a real or complex input signal. Refer to the following link for more information on this block:
https://www.mathworks.com/help/comm/ref/awgnchannel.html
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