Mobility

Diversity-Multiplexing Trade-Off in Coherent Free-Space Optical Systems With Multiple Receivers

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Executive Summary

In this paper, from an information theory point of view, the authors investigate the performance of a coherent Free Space Optical (FSO) communication system with multiple receives apertures over atmospheric turbulence channels. Their study builds on a recently introduced statistical model that characterizes the combined effects of turbulence-induced wave front distortion and amplitude fluctuation in coherent receivers with phase compensation. They investigate the link reliability as quantified by "Diversity gain" and the relationship between the link reliability and the spectral efficiency as quantified by "Diversity - Multiplexing Trade-off (DMT)."

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