What is the concept of per dimension in modelling MIMO as complex Gaussian variable?

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amir_rastegar2003

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hi friends.

as you khow, we model MIMO channel as complex Gaussian random variable with variance 0.5 per dimension.

what is the concept of per dimention and how we can do it in MATLAB?

thanks a lot.
 

need help about MIMO

Hi
It means that random variables are complex with variance 1, so real part and imag part have variance 0.5.
Z = X + j Y
Var(Z) = 1;
Var(X) = Var(Y) = 0.5
it is easy in MATLAB, try this:
z = sqrt(0.5).*randn + j.*sqrt(0.5).*randn
 
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