Performance Analysis of Free Space Optical communication In Presence of Atmospheric Turbulence

Free space optical (FSO) communication has emerged as a viable technology for broadband wireless applications which offers the potential of high bandwidth capacity over unlicensed optical wavelengths. The only essential requirement for an FSO system to work is that there is a free line of sight between the transmitter and receiver. A comparison of BER is also presented with the changing value of the channel turbulence with gammagamma channel model in free space optical communication system. Finally, outage analysis of log normal fading channel with fading is presented with changing value of variance. With the increase in channel variance outage probability also increases. From the results we can conclude that the outage probability of a channel is the function of channel variance in free space optical communication system.