Abstract
In free space optical (FSO) communication, have to deal with several challenges as having its dependency on the condition and types of free space medium such as air, outer space or vacuum and thus have an impact of weather conditions on the performance. This paper presents a comprehensive analysis of the FSO network under the impact of adverse weather conditions in the channel medium. An efficient design of the FSO link employing two-dimensional (2-D) wavelength-hopping/time-spreading (WH/TS) optical code division multiple access (OCDMA) technique has been proposed. A focused analysis has been discussed by taking account of the effect of various weather conditions such as fog, rain, and snow on bit error rate (BER) performance. In addition to that, the analytical results are determined considering the influences of optical beating interference (OBI), several receiver noises, and multiple access interference (MAI). Under the foggy condition, it has been found that the performance is highly affected due to higher attenuation characteristics of fog than snow and rain. Degradation of BER performance with the variation of transmission length has been observed that is BER increases with the increase of transmission length.
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