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Parallel Structure of Viterbi Decoder for High Performance of PRML Signal  

Seo, Beom-Soo (전북대학교 로봇비젼연구실)
Kim, Jong-Man (전남도립대 전기에너지시스템과)
Kim, Hyong-Suk (전북대학교 전자정보공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers P / v.58, no.4, 2009 , pp. 623-626 More about this Journal
Abstract
In this paper, we applied new analog viterbi decoder to decode PR(1,2,2,1) signal for DVD and analyze the specific and signal characteristics. We implemented the parallel analog viterbi decoder and the convolution digital viterbi decoder(the digital PRML) utilizing the technology of analog parallel processing circuits. The proposed analog viterbi decoder can replace the conventional digital viterbi decoder by a new one. Our circuits design the low distortion and the high accuracy over the previous implementation. Through the parallel structure of the proposed viterbi decoder, we got the achievement of the decoding speed by the multiple times.
Keywords
The Digital PRML; Analog Parallel Processing Circuits; Parallel Analog Viterbi Decoder;
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