Rateless Codes for Terrestrial Optical Wireless Communications

J. Anguita (Chile), M. Neifeld, B. Hildner, and B. Vasic (USA)

Keywords

Optical wireless communication; Freespace optics;Turbulence; Raptor codes; Punctured codes; Channel stateinformation.

Abstract

We present a numerical evaluation of two rateless error correcting codes on experimentally recorded signal sequences from a wireless optical communication link. The codes can successfully adapt to the channel fading induced by atmospheric turbulence, only requiring a low rate feedback channel. We demonstrate that a Raptor code is an efficient solution to improve the reliability of a wireless optical link even at conditions at which channel quality is very low.

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