TY - JOUR
T1 - Soft-error-event decoding for multitrack magnetic recording channels
AU - Vasic, Bane
AU - Venkateswaran, Vijay
N1 - Funding Information:
Manuscript received February 27, 2003; revised October 3, 2003. This work was supported by the National Science Foundation under Grant CCR 0208597. B. Vasic is with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). V. Venkateswaran was with the Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721 USA. He is now with the Storage and Architecture Development Department, Sony Corporation, Tokyo 141-0001, Japan. Digital Object Identifier 10.1109/TMAG.2004.824135
PY - 2004/3
Y1 - 2004/3
N2 - Multiple-head array systems, which allow reading and writing of data simultaneously on multiple tracks, can potentially provide both high density and high speed, but the read-back signal in such systems is corrupted by intertrack interference (ITI) in addition to intersymbol interference (ISI). In this paper, we report on the performance of a multitrack system and propose a low-complexity multitrack soft-error-event decoder (SEED) to counter the effects of ISI and ITI. The multitrack SEED is based on a high-rate Bose-Chaudhuri-Hocquenghem code, and is capable of correcting most frequent error events produced by the channel. Used in conjunction with a joint partial response equalizer followed by an ITI equalizer, the SEED scheme provides a gain of 0.5-2 dB at a bit-error rate of 10-4 relative to an uncoded system.
AB - Multiple-head array systems, which allow reading and writing of data simultaneously on multiple tracks, can potentially provide both high density and high speed, but the read-back signal in such systems is corrupted by intertrack interference (ITI) in addition to intersymbol interference (ISI). In this paper, we report on the performance of a multitrack system and propose a low-complexity multitrack soft-error-event decoder (SEED) to counter the effects of ISI and ITI. The multitrack SEED is based on a high-rate Bose-Chaudhuri-Hocquenghem code, and is capable of correcting most frequent error events produced by the channel. Used in conjunction with a joint partial response equalizer followed by an ITI equalizer, the SEED scheme provides a gain of 0.5-2 dB at a bit-error rate of 10-4 relative to an uncoded system.
KW - Error-event decoding
KW - Intersymbol interference (ISI)
KW - Intertrack interference (ITI)
KW - Joint partial response equalization
KW - Maximum likelihood sequence detection
KW - Parity check codes
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U2 - 10.1109/TMAG.2004.824135
DO - 10.1109/TMAG.2004.824135
M3 - Article
AN - SCOPUS:2342582887
SN - 0018-9464
VL - 40
SP - 492
EP - 497
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 2 I
ER -