How to add white gaussian noise with specific variance using awgn?

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Georgios Orfanidis
Georgios Orfanidis 2021-9-21
评论： Georgios Orfanidis 2021-9-27
I want to add white gaussian noise with a specific variance. How can I accomplish this by using either wgn or awgn functions?
Can I do something like that,
out = awgn(in, var=1);

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Prachi Kulkarni
Prachi Kulkarni 2021-9-24
Hi,
In the wgn function, if you set the power type to linear i.e. watts, the power of the noise signal is the variance itself.
So, you can generate Gaussian noise of variance noiseVar for a signal of dimensions m x n as follows.
wgn(m,n,noiseVar,'linear')

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