Channel capacity of adaptive transmission schemes using equal gain combining receiver over Hoyt fading channels

Closed-form expressions for the channel capacity of an L-branch equal gain combining diversity receiver over Hoyt (Nakagami-q) fading channels is derived for adaptive transmission schemes. To obtain capacity expressions, probability density function of the combiner out put signal-to-noise ratio (SNR) is used. The capacity expressions are given in terms of Yacoub's integral, a general solution for which is presented in the literature recently. Further, an expression is derived for optimal cutoff SNR for the optimal power and rate adaptation scheme. A study on the effects of fading parameters and diversity order on the channel capacity of the systems for different techniques have been presented.