The Performance in FSO Communication Due to Atmospheric Turbulence Via Utilizing New Dual Diffuser Modulation Approach

A new transmission and detection technique namely Dual Diffuser Modulation (DDM) for free space optical (FSO) communication systems is proposed. FSO communication systems can provide the line-of-sight optical transmission with low cost and good security. However, the distance dependent atmospheric turbulence and path-loss affect widespread use of FSO systems and limit their application to short-range links. This paper analyzes the capacity performance in term of power received for FSO communication between the conventional on off keying (OOK) and DDM technique under the influence of the atmospheric turbulence. Capacity of distance performance also analyzes in this paper. As the result, the distance of FSO can increased when the power transmitted increased with considering at standard acceptance BER 10. Meanwhile at the effective power received for the comparison between both techniques, the performance of power received approximately about -50 dB increased. This indicate that the DDM technique improved the performance if compare to conventional OOK technique.