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International Journal of Antennas and Propagation
Volume 2013, Article ID 692915, 8 pages
http://dx.doi.org/10.1155/2013/692915
Research Article

Recovery Capabilities of Rateless Codes on Simulated Turbulent Terrestrial Free Space Optics Channel Model

Department of Energy, Information Engineering and Mathematical Models (DEIM), University of Palermo, Viale delle Scienze Buiding 9, 90128 Palermo, Italy

Received 5 March 2013; Accepted 19 July 2013

Academic Editor: Lorenzo Luini

Copyright © 2013 A. Andò et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Free Space Optics (FSO) links are affected by several impairments: optical turbulence, scattering, absorption, and pointing. In particular, atmospheric optical turbulence generates optical power fluctuations at the receiver that can degrade communications with fading events, especially in high data rate links. Innovative solutions require an improvement of FSO link performances, together with testing models and appropriate channel codes. In this paper, we describe a high-resolution time-correlated channel model able to predict random temporal fluctuations of optical signal irradiance caused by optical turbulence. Concerning the same channel, we also report simulation results on the error mitigation performance of Luby Transform, Raptor, and RaptorQ codes.