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Proceedings Paper

Packet-layer forward error correction coding for fading mitigation
Author(s): Hennes Henniger
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Paper Abstract

In an on/off-keying atmospheric optical communication system, index of refraction turbulence and PAT (pointing, acquisition and tracking) instabilities create strong and very slow fading compared to the usually used high data-rates. With this channel behavior, forward error correction can only work effectively if the codeword-length is longer than the mean duration of fade. Therefore packet-layer coding is a favorable way to implement a code with codewords longer than typical fading events. A code validation platform based on Ethernet transmission technology and packet-layer coding using UDP packets was built up to prove the performance of packet-layer coding. In this paper a demonstrator setup as well as results from a free-space transmission experiment are presented.

Paper Details

Date Published: 1 September 2006
PDF: 8 pages
Proc. SPIE 6304, Free-Space Laser Communications VI, 630419 (1 September 2006); doi: 10.1117/12.680402
Show Author Affiliations
Hennes Henniger, German Aerospace Ctr. (Germany)


Published in SPIE Proceedings Vol. 6304:
Free-Space Laser Communications VI
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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