Ergodic Capacity of Mixture Gamma and Double Generalized Gamma Distribution in Dual Hop RF/FSO Transmission System

Abstract

Considering a Dual Hop RF/FSO communication system, one hop is used as RF Signal and another as an FSO channel. Our work uses Mixture Gamma Distribution to model the RF channel and a Double Generalized Gamma distribution to model the FSO channel. Also, as a special case, of Mixture Gamma, Rayleigh and Nakagami-m distribution is modelled at RF channel. Thereby, we perform mathematical and graphical analysis for different turbulence conditions. The system's performance is analyzed in terms of Ergodic Capacity with different threshold SNR. The simulation results show that Ergodic Capacity increases with an increase in average electrical SNR under other turbulence conditions.