MATLAB Based Simulink Modelling and Performance Analysis of Free Space Optical Communication System

Abstract

In the recent time free-space optical communication (FSO) systems have garnered significant recognition because of its higher capability it provides path for long distance applications. When FSO is being operated on illegal optical spectrum, it may yield the LOS optical transmission with the advantage of lower price and also better security system. FSO is defined as transference of harmonized visible or IR rays in the airspace for obtaining broadband communication. FSO can be operated over a long distance that can be up to many kilometres. In FSO systems, communication between transmitter and receiver can be done till the time the LOS.  But the condition for this transference is that the transmitted power should be so much high that it can overcome the atmospheric losses till the time it reaches to the receiver. There are several factors which have a great effect on the data transmission rate are analysed like climatic attenuation, track loss and pointing error.  In this research work, BER is investigated against various parameters for example atmospheric turbulence, distance, path loss factor and transmitter power. To execute the desired task MATLAB Simulink model is designed