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Proceedings Paper

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations
Author(s): Bernhard Epple
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Paper Abstract

The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence effects. This paper discusses the applicability of commonly used communication protocols like UDP, TCP, ARQ and the SCPS-TP from the Space Communications Protocol Standards (SCPS) in various scenarios. The performance of the protocols in the selected scenarios is evaluated using the simulation software OMNeT++. The simulations are based on channel measurements from the three FSO demonstrations FASOLT (61 km Ground - Ground link), KIODO (LEO satellite downlink), and ATENAA (land-mobile link) and from ongoing measurements at the German Aerospace Center (DLR) (short-range Ground - Ground) as part of the MINERVAA project. Based on the simulation results, recommendations for protocols in free-space optical communication scenarios are given.

Paper Details

Date Published: 25 September 2007
PDF: 12 pages
Proc. SPIE 6709, Free-Space Laser Communications VII, 670915 (25 September 2007); doi: 10.1117/12.732032
Show Author Affiliations
Bernhard Epple, German Aerospace Ctr., DLR (Germany)

Published in SPIE Proceedings Vol. 6709:
Free-Space Laser Communications VII
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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