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IJSTR >> Volume 3- Issue 6, June 2014 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Implementation Of RS Decoder Using High-Speed UHD Architecture

[Full Text]



Bhashipaka. Ashok, M. A. Himayath Shamshi



Keywords : Burst error correction, Hard decision decoding,u nified VLSI architecture.



Abstract: Reed-Solomon (RS) codes are widely used as f orward correction codes (FEC) in digital com munication and storage systems.correcting ran random errors of RS codes have been extensiv ely studied in both academia and industry. Ho wever, for burst-error correction, the research is still quite limited due to its ultra high compu tation complexity. In this brief, starting from a recent theoretical work, a low-complexity refo rmulated inversionless burst-error correcting (RiBC) algorithm is developed for practical ap plications.Then, based on the proposed algorit hm, a unified VLSI architecture that is capabl e of correcting burst errors, as well as random errors and erasures, is firstly presented for mu lti-mode decoding requirements. This new arc hitecture is denoted as unified hybrid decoding (UHD)architecture. It will be shown that,being the first RS decoder owning enhanced burst er ror correcting capability, it can achieve signifi cantly improved error correcting capability th an traditional hard-decision decoding (HDD) design. A design of (7, 3) Reed Solomon encod er and Decoder are implemented using VHDL hardware description language (HDL) code, sim ulated and synthesized by XILINX ISE simulator. General Terms : Burst errors, Reed-Solomon codes,RiBC algorith m and UHD architecture.



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