Investigation on the Performance of FSO Communication Link Under Various System Parameters

Abstract

Optical Wireless Communication (OWC) also known as Free Space Optics (FSO) technology has many advantages such as availability of license-free spectrum, low deployment cost, large modulation bandwidth, low consumption of power, and small size. In this paper, the investigation on the performance of free space optical communication link has been done for different system parameters and transmission windows using OOK (on-off keying) modulation scheme. The performance of the system has been analyzed using Q Factor and SNR of the received signal as the performance metric. Also, the effect of atmospheric attenuation on the performance of the system has been analyzed by varying the link distance between the transmitter and the receiver for a specified transmission power level and bit rate. The performance of the system has also been investigated under different data transmission rates and transmission power levels using OPTISYSTEM simulation software.