An Adaptive Partial Response Equalizer Using Branch Metrics of Viterbi Trellis for Optical Recording Systems 


Vol. 30,  No. 9, pp. 871-876, Sep.  2005


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  Abstract

In this paper, we propose an improved partial response maximum likelihood (PRML) detection scheme that has an adaptive equalizer and can be applied in the asymmetric optical recording system with high-density. We confirmed that the proposed PRML detector improves detection performance. In addition, we implemented the detector by Verilog HDL. The adaptive equalizer is composed of tap coefficient updating unit using LMS algorithm and FIR filter. FIR filter is implemented by the transposed direct form architecture for high speed operation. Viterbi detector is implemented by the register exchange method.

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  Cite this article

[IEEE Style]

K. Lee, J. Lee, J. Lee, "An Adaptive Partial Response Equalizer Using Branch Metrics of Viterbi Trellis for Optical Recording Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 9, pp. 871-876, 2005. DOI: .

[ACM Style]

Kyusuk Lee, Joohyun Lee, and Jaejin Lee. 2005. An Adaptive Partial Response Equalizer Using Branch Metrics of Viterbi Trellis for Optical Recording Systems. The Journal of Korean Institute of Communications and Information Sciences, 30, 9, (2005), 871-876. DOI: .

[KICS Style]

Kyusuk Lee, Joohyun Lee, Jaejin Lee, "An Adaptive Partial Response Equalizer Using Branch Metrics of Viterbi Trellis for Optical Recording Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 9, pp. 871-876, 9. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880