Packet-layer forward error correction coding for fading mitigation

Hennes Henniger

doi:10.1117/12.680402

1 September 2006 Packet-layer forward error correction coding for fading mitigation

Hennes Henniger

Proceedings Volume 6304, Free-Space Laser Communications VI; 630419 (2006) https://doi.org/10.1117/12.680402
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

Hennes Henniger "Packet-layer forward error correction coding for fading mitigation", Proc. SPIE 6304, Free-Space Laser Communications VI, 630419 (1 September 2006); https://doi.org/10.1117/12.680402

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