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Proceedings Paper

A decoder architecture for high-speed free-space laser communications
Author(s): Michael Cheng; Michael Nakashima; Jon Hamkins; Bruce Moision; Maged Barsoum
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Paper Abstract

We present a decoding architecture for high-speed free-space laser communications. This system will be used by NASA's Mars Laser Communication Demonstration (MLCD) project, the first use of high-speed laser communication from deep space. The Error Correction Code (ECC) and modulation techniques for this project have been motivated by an analysis of capacity, and existing designs have been shown to operate within 0.9 dB of the Shannon limit on the nominal operating point. In this paper, we give the algorithmic description and FPGA implementation details that led to the development of a 50 Mbps hardware decoder.

Paper Details

Date Published: 18 April 2005
PDF: 12 pages
Proc. SPIE 5712, Free-Space Laser Communication Technologies XVII, (18 April 2005); doi: 10.1117/12.591043
Show Author Affiliations
Michael Cheng, Jet Propulsion Lab. (United States)
Michael Nakashima, Jet Propulsion Lab. (United States)
Jon Hamkins, Jet Propulsion Lab. (United States)
Bruce Moision, Jet Propulsion Lab. (United States)
Maged Barsoum, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 5712:
Free-Space Laser Communication Technologies XVII
G. Stephen Mecherle, Editor(s)

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