High-speed Reed-Solomon decoder using reformulation inversionless Berlekamp-Massey architecture for volume holographic storage

Diqing Hu; Changsheng Xie

doi:10.1117/12.510729

9 April 2003 High-speed Reed-Solomon decoder using reformulation inversionless Berlekamp-Massey architecture for volume holographic storage

Diqing Hu, Changsheng Xie

Author Affiliations +

Proceedings Volume 5060, Sixth International Symposium on Optical Storage (ISOS 2002); (2003) https://doi.org/10.1117/12.510729
Event: Sixth International Symposium on Optical Storage (ISOS 2002), 2002, Wuhan, China

Abstract

Volume holography is currently the subject of widespread interest as a fast-readout-rate, high-capacity digital data-storage technology. However, due to the effect of cross-talk noise, scattering noise, noise gratings formed during a multiple exposure schedule, it brings a lot of burst errors and random errors in the system. Reed-Solomon error-correction codes have been widely used to defend digital data against errors, but the speed of Reed-Solomon decoder for volume holographic storage system application is a challenge. This paper presents a high-speed VLSI decoder architecture implementation for decoding (255,223) Reed-Solomon codes with the Modified Berlekamp-Massey algorithm for volume holographic storage. In contrast to conventional Berlekamp-Massey architectures, the speed bottleneck is eliminated via a series of algorithmic transformations that result in a fully systolic architecture in which a single array of processors computes both the error-locator and the error-evaluator polynomials. The proposed architecture requirs approximately 25% fewer multipliers and a simpler control structure than the architectures based on the popular extended Euclidean algorithm. By adopting high speed CPLD, a data processing rate over 200 Mbit/s is realized. Moreover, for block-interleaved Reed-Solomon codes, embedding the interleaver memory into the decoder results in a further increase of the throughput.

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Diqing Hu and Changsheng Xie "High-speed Reed-Solomon decoder using reformulation inversionless Berlekamp-Massey architecture for volume holographic storage", Proc. SPIE 5060, Sixth International Symposium on Optical Storage (ISOS 2002), (9 April 2003); https://doi.org/10.1117/12.510729

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KEYWORDS

Volume holography

Holography

Remote sensing

Data storage

Clocks

Computer architecture

Data processing

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