Computation of Secrecy and Outages for Hybrid FSO/RF System with Modified Switching

Fibreless optical communication is a less complex system and tends to offer soaring data rates. Aside from its superiority, it is prone to weather effects such as fog, snow, scintillation and link misalignment. To overpower these effects and increase the availability and reliability of this system we combine it through a mm wave RF link to build a hybrid composition. In this work, secrecy and outage analysis for modified-switching based hybrid optical/RF system having two optical threshold values and one RF threshold that operate under pointing error as well as weak-to-strong turbulence conditions modeled by gamma-gamma distribution is considered. To further increase our system’s security we have calculated secrecy outage probability in the whereabouts of a malicious intruder.