Abstract
The free space optical communication technology tries to fulfill rising need for high bandwidth transmission capability link along with security and ease in installation. The free space optics uses beam of light to provide optical connection that can send and receive video, voice, and data information. In this paper a model analytical description of optical wireless communication systems operation performance efficiency evaluation in the presence of different fog density levels and noise is constructed. It is used for quantitative determination of the maximum range between transmitter and receiver depending on the signal transmission quality. Link margin, signal transmission, signal quality, received signal power, particle size distribution, optical depth, transmission data rate, signal time delay spread, signal noise and signal attenuation are deeply studied over wide range of the affecting parameters. Signal time delay spread and signal to noise ratio are deeply studied with using on-off keying modulation technique and are compared with their results with using binary phase shift keying in Li et al. (IEEE Trans Commun 55:1598---1606, 2007).
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