Jpn. J. Appl. Phys. 43 (2004) pp. 4856-4858  |Previous Article| |Next Article|  |Table of Contents|
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Modified Partial Response Maximum Likelihood Detection Using the Relative Probability of the 17PP Code for Optical Storage Systems

Joohyun Lee and Jaejin Lee

(Received November 25, 2003; accepted January 7, 2004; published July 29, 2004)

In this paper, we propose a modified calculation method of the branch metric in partial response maximum likelihood (PRML) detection for high-density optical storage systems. The scheme is related to the relative probability of the run-length limited code. Hence, we also present the relative probabilities of the 17PP coded sequences for 2nd-, 3rd- and 4th-orders of PR targets. The modified PRML detection using the relative probability of the 17PP coded sequence has better bit error rate (BER) performance than conventional PRML detection.

URL: http://jjap.jsap.jp/link?JJAP/43/4856/
DOI: 10.1143/JJAP.43.4856
KEYWORDS:17PP code, modified PRML, relative probability, branch metric calculation, optical recording system

References

1. P. H. Siegel and J. K. Wolf: IEEE Commun. Mag. 29 (1991) 68.
2. T. Narahara, S. Kobayashi, M. Hattori, Y. Shimpuku, G. van den Enden, J. Kahlman, M. van Dijk and R. van Woudenberg: Jpn. J. Appl. Phys. 39 (2000) 912[JSAP].
3. R. B. Wells and G. L. Bartles: IEEE Trans. Magn. 32 (1996) 5226.