Optimum Filter Signal Detection for Non AWGN Channels
AWGN is a specific noise model that is to varying physical circumstances, of varying utility.

Not AWGN is not a specific noise model, but you can look at it as detection not dependent on Gaussian assumptions.  There is no one kind of optimal detector for every kind of non Gaussian noise.  

A good book is

https://books.google.com/books/about/Signal_Detection_in_Non_Gaussian_Noise.html?id=tvpSAAAAMAAJ&amp;hl=en

Multiplicative noise is another class as well.