Which is right for complex noise CN(0,N0/2)?

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yang-En Hsiao
yang-En Hsiao 2019-5-6
评论： dpb 2019-5-6
I want to create a complex gaussian noise CN(0,N0/2),which code is correct?
noise=(randn(1,n)+1i*randn(1,n))*sqrt(N0/2)
or
noise=(randn(1,n)+1i*randn(1,n))*sqrt(N0/2)*sqrt(1/2) %sqrt(1/2) is normalized
Which is right?

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