Performance Analysis of Atmospheric Conditions Over Terrestrial Free-Space Optical Communication

In this investigation, relation between bit error rate (BER) versus atmospheric effect present in the channel has been analyzed for free-space optical communication (FSO) system. This paper deals with the performance evaluation of BER with respect to different atmospheric conditions. A terrestrial FSO link is designed that offers high data rate optical communication system. Absorption, scattering, and turbulence are the three major adverse effects present in the atmosphere that cause serious degradation in the performance of BER that may lead to communication link inoperable. During this analysis, a relation between minimum BER, optical power of laser, and link distance would be observed.