PRML detection scheme with modified trellis for a MTR code 


Vol. 29,  No. 12, pp. 1601-1605, Dec.  2004


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  Abstract

When codeword sequence has two or less successive transitions, the performance of 4th-order partial response maximum-likelihood (PRML) detector can be improved. However, the code leads to an unacceptable loss of performance due to the low code rate. For a rate 7/8 code that MTR constraint (j) of each codeword is limited to 2, and j is allowed to be 3 when codewords are connected, we modified the trellis of PRML detector to combine j=2 wlth j=3. We confirmed that the rate 7/8 coded 4th-order PRML detection with combined trellis achieves the SNR gain more than 2dB compared to the rate 8/9 coded 4^(th)-order PRML detection at 10^(-5) BER in high-density longitudinal or perpendicular magnetic recording systems.

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  Cite this article

[IEEE Style]

J. Lee and J. Lee, "PRML detection scheme with modified trellis for a MTR code," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 12, pp. 1601-1605, 2004. DOI: .

[ACM Style]

Joohyun Lee and Jaejin Lee. 2004. PRML detection scheme with modified trellis for a MTR code. The Journal of Korean Institute of Communications and Information Sciences, 29, 12, (2004), 1601-1605. DOI: .

[KICS Style]

Joohyun Lee and Jaejin Lee, "PRML detection scheme with modified trellis for a MTR code," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 12, pp. 1601-1605, 12. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880