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Optical Communication over Atmospheric Turbulence with Limited Channel State Information at the Transmitter

In recent results, a theoretical framework has been developed that shows that wavefront predistortion with transmitter channel state information can effectively mitigate turbulence induced fading for free space communication systems. The theoretical framework, however, relies on the assumption of perfect channel state information available at the transmitter, which is not physically realizable since it would require an infinite rate feedback link. This paper extends the theoretical framework to physically realizable systems with finite rate feedback. Specifically, we provide the performance and optimal feedback strategy given a finite rate feedback link.