This handbook seeks to acts as a reference for both professional researchers and academicians in the field of digital communications, including modulation, detection, multi-dimensional signal processing, image processing, pattern recognition, and antenna array processing. The distributions and associated statistics apply to mobile and cellular communications, vehicular technology, radar systems, spread spectrum systems, and optical communication systems. It will also be of interest to those involved in probabilistic and stochastic analysis and modelling. As a handbook, the results are presented in their final form without derivation or discussion. Also included at the end of the book are numerous curves illustrating the behaviour of a variety of the probability measures presented in mathematical form.