Outage probability of relayed free space optical communication systems

Abstract

Free space optical (FSO) communication is highly sensitive to atmospheric turbulence. The use of relays where the distance between the transmitter and the receiver is scaling down via multi-hop routing can improve the performance of an FSO link. In this reported work, the outage probability of a multi-hop FSO communication system with amplify-and-forward relays, assuming strong turbulence fading channels, is analytically derived. The turbulence-induced fading is modelled as a multiplicative random process which follows the K or the negative exponential distribution.