An Extended Dual DFE Detector for High-density Perpendicular Magnetic Recording Channels 


Vol. 27,  No. 12, pp. 1169-1174, Dec.  2002


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  Abstract

Partial response maximum likelihood (PRML) systems are powerful and indispensable for high-density perpendicular magnetic recording channels. However, high order partial response (PR) targets must be considered because of severe intersymbol interference (lSI). On the other hand, decision feedback equalization (DFE) has very low complexity. And DFE can be used with high code rate modulation codes, thanks to the fact that DFE doe not use a minimum run constraint not like as a multi-level DFE (MDFE). At high recording densities, dual detection schemes such as dual DFE (DDFE) significantly improve performance and reduce error propagation. So , we compare DDFE detectors with PR(l221)ML and PR(12321)ML on 16/17 maximum transition run (MTR) (3,II)-coded perpendicular magnelic recording channels and propose an extended DDFE that represents a dual version of the DDFE. Simulation results show that the DDFE has a BER performance comparable to that for PR(l232I)ML. Our extended DDFE in turn shows a performance gain over DDFE and PR( 12321)ML at the normalized recording densities 3 and 4.

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  Cite this article

[IEEE Style]

C. Woo, H. Cho, C. kang, D. Honng, "An Extended Dual DFE Detector for High-density Perpendicular Magnetic Recording Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 12, pp. 1169-1174, 2002. DOI: .

[ACM Style]

Choong-chae Woo, Han-gyu Cho, Chang-eon kang, and Dae-sik Honng. 2002. An Extended Dual DFE Detector for High-density Perpendicular Magnetic Recording Channels. The Journal of Korean Institute of Communications and Information Sciences, 27, 12, (2002), 1169-1174. DOI: .

[KICS Style]

Choong-chae Woo, Han-gyu Cho, Chang-eon kang, Dae-sik Honng, "An Extended Dual DFE Detector for High-density Perpendicular Magnetic Recording Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 27, no. 12, pp. 1169-1174, 12. 2002.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880