Abstract
Free Space Optical (FSO) Communication is the transmission of data using optical beam through free space. It requires the line of sight condition to be maintained between the transmitter and receiver in order to transmit data. High data rates, license-free spectrum and low deployment cost are some of the advantages of FSO link. But the attenuation due to atmospheric conditions is a major factor responsible for the degradation of performance of FSO link. Depending upon the weather conditions of a particular place, the performance of FSO system varies accordingly. So in this paper, we have analysed the attenuation coefficient for different weather conditions. The effects of rain, snow and fog on the performance of FSO link has been analyzed in terms of attenuation coefficient along with the study of turbulent nature of free space optical communication link employing Gamma-Gamma Turbulence Model.
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