NDLI: Detection techniques for high-density magnetic recording

Content Provider	IEEE Xplore Digital Library
Author	Hongli Sun Mathew, G. Farhang-Boroujeny, B.
Copyright Year	1965
Abstract	In this paper, we present techniques for improving the performance of Viterbi detector in the presence of channel nonlinearities and media noise, which are the dominant source of errors in high density magnetic recording channels. Instead of treating these distortions separately, we combine them into a "high-density (HD) noise", which is signal dependent and correlated in nature. To compensate for signal-dependent mean and correlation of HD noise, we modify the branch metrics by subtracting an estimate of the mean from the signals on each branch and optimize the equalization target by minimizing the dominant error event probability, respectively. Simulation results show that these modifications yield significant performance gains.
Sponsorship	IEEE Magnetics Society
Starting Page	1193
Ending Page	1199
Page Count	7
File Size	338068
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic recording Additive white noise Gaussian noise Magnetic noise High definition video Viterbi algorithm Detectors Nonlinear distortion AWGN Sun Viterbi detection Channel nonlinearities magnetic recording media noise PR target design signal-dependent distortions
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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