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Proceedings Paper

Selection of modulation and codes for deep-space optical communications
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Paper Abstract

We describe several properties of deep space optical channels that lead to an appropriate selection of modulation format, pulse position modulation (PPM) order, error control code rate, and coding scheme. The selection process is motivated by capacity considerations. We compare the Shannon limit to the performance of Reed-Solomon codes and convolutional codes concatenated with PPM and show that, when iteratively decoded, concatenated convolutional codes operate approximately 0.5 dB from capacity over a wide range of signal levels, about 2.5 dB better than Reed-Solomon codes.

Paper Details

Date Published: 16 June 2004
PDF: 8 pages
Proc. SPIE 5338, Free-Space Laser Communication Technologies XVI, (16 June 2004); doi: 10.1117/12.528434
Show Author Affiliations
Jon Hamkins, Jet Propulsion Lab. (United States)
Bruce Moision, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 5338:
Free-Space Laser Communication Technologies XVI
Steve Mecherle; Cynthia Y. Young; John S. Stryjewski, Editor(s)

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