For my current project work, I need to create an AWGN channel in MATLAB. There is a built-in function in MATLAB named 'awgn'. But that returns the value of received signal after passing through awgn channel. I do not need that. I need a function which will return the channel matrix only.
E.g. for Rayleigh fading channel matrix one can use this function H= (randn+ 1i*randn)/sqrt(2);
I need something like this for AWGN channel. Thanks in advance.