I. Introduction
Performance evaluation of wireless communication systems over fading channels has always been an active area of research in the communication theory literature. Typically, performance metrics such as the bit/symbol error rates (BER/SER), outage probability, amount of fading (AoF), and ergodic channel capacity are usually used, among many others (see [1] and references therein). These quantities are of interest for both the single- and multiple-branch diversity receivers usually employed to reduce the detrimental effect of fading.