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In this study, the performance of multiple-input-single-output optical communication schemes is analysed in the context of inter-satellite communication. The analysis covers two types of diversity schemes: selection combining (SC) and equal gain combining. Outage probabilities with correlated errors are derived. The main results are expressed in terms of the first-order Marcum Q-function. It is shown that the merit of combining is obvious when the correlation coefficient is less than 0.5 and equal gain combining (EGC) has an advantage over SC in power utilisation.
Date of Publication: October 16 2012