Performance analysis of Mixed MUD-RF/Multi-aperture FSO Relay Communication System with Co-channel Interference

This paper discusses the performance of an improved dual-hop mixed radio frequency (RF) / free space optical (FSO) relay communication system in present multiple co-channel interferences (CCIs) at node. Multi-user diversity(MUD) technology has been adopted to improve RF link performance. In order FSO link, multi-aperture receiver scheme implemented. The multi-user experiences Nakagami-m fading, while is subjected Exponentiated Weibull distributed atmospheric turbulence. Moreover, CCIs node are assumed undergo fading. For this proposed system, exact closed-form expression for outage probability (OP) derived. To quickly understand effects different parameters on performance, asymptotic case high signal-to-noise (SNR) further presented. Results show that diversity min (αβM/2,m1K), where M represents number apertures; K denotes users; α, β and m1 channel parameters. Additionally, various have investigated. Finally, numerical results validated by Monte-Carlo simulations.