The Performances of Macrodiversity System in the Presence of Rayleigh and Gamma Fading

In this paper a macrodiversity system with two microdiversity system is considered. Microdiversity system is used to reduce the effects of Rayleigh fading to the system performance and macrodiversity system is used to reduce the effects of gamma fading to the system performance. Rayleigh density function is used to describe amplitude of received signal and gamma density function is used to model the average power of the received signal. This method resulted in a closed form solution for the probability density function (PDF) of the signal-to-noise ratio (SNR). By the closed form expression for the probability density function of the output signal-to-noise ratio the numerical results for Probability density function, Average output SNR, Amount of fading (AF) and Average bit error rate (ABER) are obtained in the simpler way and more precise and shown graphically for different signal and fading parameters values.