Capacity Analysis of Two-Wave With Diffuse Power Fading Channels Using a Mixture of Gamma Distributions

In this letter, we analyze the capacity of a class of generalized fading channels represented by two-wave with diffuse power (TWDP) fading models. We obtain a new representation of TWDP fading model as a mixture of gamma distributions and apply the new representation to the approximate evaluation of TWDP channel capacity under different transmission policies. We also present upper bounds on approximation errors.