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NASA NTRS · 20090027041

Discussion on LDPC Codes and Uplink Coding

Andrews, Ken·Divsalar, Dariush·Dolinar, Sam·Moision, Bruce·Hamkins, Jon·Pollara, Fabrizio
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Abstract

This slide presentation reviews the progress that the workgroup on Low-Density Parity-Check (LDPC) for space link coding. The workgroup is tasked with developing and recommending new error correcting codes for near-Earth, Lunar, and deep space applications. Included in the presentation is a summary of the technical progress of the workgroup. Charts that show the LDPC decoder sensitivity to symbol scaling errors are reviewed, as well as a chart showing the performance of several frame synchronizer algorithms compared to that of some good codes and LDPC decoder tests at ESTL. Also reviewed is a study on Coding, Modulation, and Link Protocol (CMLP), and the recommended codes. A design for the Pseudo-Randomizer with LDPC Decoder and CRC is also reviewed. A chart that summarizes the three proposed coding systems is also presented.

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Andrews, Ken, Divsalar, Dariush, Dolinar, Sam, Moision, Bruce, Hamkins, Jon, Pollara, Fabrizio. 2007-10-02. Discussion on LDPC Codes and Uplink Coding. https://ntrs.nasa.gov/citations/20090027041

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