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Choongchae Woo, Hangyu Cho and Daesik Hong, "An extended dual decision-feedback equalizer for high-density perpendicular magnetic recording channels", IEEE Trans. Magnetics, Sep 2002
[IEEE Trans. Magn.]
조회 29612
Status : | Published |
---|---|
Date : | 2002-09 |
Title : | An extended dual decision-feedback equalizer for high-density perpendicular magnetic recording channels |
Authors : | Choongchae Woo, Hangyu Cho and Daesik Hong |
Journal : | IEEE Transactions on Magnetics |
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 (ISI). On the other hand, decision feedback equalization (DFE) has very low complexity. DFE can be used with high code rate modulation codes, thanks to the fact that DFE does not use a minimum run constraint as a multilevel 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(1221)ML and PR(12321)ML on 16/17 maximum transition run (MTR) (3,11)-coded perpendicular magnetic recording channels and propose an extended DDFE that represents a dual version of the DDFE. Simulation results show that the DDFE has a bit-error-rate (BER) performance comparable to that for PR(12321)ML. Our extended DDFE in turn shows a performance gain over DDFE and PR(12321)ML at the normalized recording densities 3 and 4. |
URL : | http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1042182 |
Choongchae Woo; Hangyu Cho; Daesik Hong; , "An extended dual decision-feedback equalizer for high-density perpendicular magnetic recording channels," Magnetics, IEEE Transactions on , vol.38, no.5, pp. 2343- 2345, Sep 2002
doi: 10.1109/TMAG.2002.801900
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1042182&isnumber=22340
doi: 10.1109/TMAG.2002.801900
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1042182&isnumber=22340
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