A Method for Generating Random Process Having Given First - and Second-Order Statistics over FSO Channel

For the purpose of free-space optics (FSO) channel simulation, we adapt a previously proposed method for generation of stochastic signal samples. By using this method, we generate signal samples that have a given probability density function, as well as a desired autocorrelation function. We use another unrelated method based on stochastic differential equations to generate the stochastic signal samples of the same FSO channel. We compare these two methods based on the resulting probability density functions and autocorrelations. The results are significant for determining important FSO system performance parameters such as error probability, level-crossing rate and average fade duration. The importance of the results is significant specifically in channels where error correction codes are used.