Optimization of coding and PRML detection scheme for perpendicular magnetic recording systems 


Vol. 30,  No. 3, pp. 59-63, Mar.  2005


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  Abstract

We propose non-DC-free generalized PRML (GPRML) that are suppressed DC contents for matching to the response of perpendicular magnetic recording channel with a ring-head. In addition, DC-free encoding is considered to prevent low-frequency disturbances. The SNR performance is obtained by combining the various PRML channels with DC-free and non-DC-free codes during the normalized recording density increases from 2.5 to 3.5. The GPRML detections without using DC-free code get SNR gains more than 1dB compared to the conventional PRML systems at 10-5BER. We confirmed that the rate 127/136 DC-free coded GPRML systems show good performances compared with the 16/17 non-DC-free coded GPRML systems. In results, DC-free coded GPRML detections get gains about 1.4dB and 2.0dB at the density of 3.3 and 3.5, respectively.

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  Cite this article

[IEEE Style]

J. h. Lee and J. j. Lee, "Optimization of coding and PRML detection scheme for perpendicular magnetic recording systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 3, pp. 59-63, 2005. DOI: .

[ACM Style]

Joo hyun Lee and Jae jin Lee. 2005. Optimization of coding and PRML detection scheme for perpendicular magnetic recording systems. The Journal of Korean Institute of Communications and Information Sciences, 30, 3, (2005), 59-63. DOI: .

[KICS Style]

Joo hyun Lee and Jae jin Lee, "Optimization of coding and PRML detection scheme for perpendicular magnetic recording systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 3, pp. 59-63, 3. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880