Performance analysis in free space optical communication system using aperture averaging

Abstract

The advancement of the terrestrial free space optical communication system (FSO) has shown a drastic increase. But despite the various advantages provided by FSO communication, there are various issues related to the design of optical links. To overcome the problems like scattering, diffraction, turbulence, etc., different techniques were developed, and one of the most widely employed techniques is aperture averaging. The aperture averaging is the main focus of this paper and using on–off (OOK) modulation technique, the bit error rate (BER) performance curves have been analysed for varying data rates and aperture sizes at the receiver using optisystem software.