A decoder architecture for high-speed free-space laser communications

Michael Cheng; Michael Nakashima; Jon Hamkins; Bruce Moision; Maged Barsoum

doi:10.1117/12.591043

18 April 2005 A decoder architecture for high-speed free-space laser communications

Michael Cheng, Michael Nakashima, Jon Hamkins, Bruce Moision, Maged Barsoum

Proceedings Volume 5712, Free-Space Laser Communication Technologies XVII; (2005) https://doi.org/10.1117/12.591043
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

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.

Citation Download Citation

Michael Cheng, Michael Nakashima, Jon Hamkins, Bruce Moision, and Maged Barsoum "A decoder architecture for high-speed free-space laser communications", Proc. SPIE 5712, Free-Space Laser Communication Technologies XVII, (18 April 2005); https://doi.org/10.1117/12.591043

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