Post Compensation for Nonlinear Distortions in PRML Recording Channel

Yinyi Lin; Ming Fung Yuan

doi:10.1109/20.490260

Post Compensation for Nonlinear Distortions in PRML Recording Channel

Yinyi Lin, Ming Fung Yuan

Department of Communication Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The performance of the PRML recording channel is degraded due to nonlinear distortions introduced in the recording or reproducing processes for high density recordings. Although the maximum likelihood sequence detector (Viterbi detector) might be applied to the channel including these nonlinearities, the Viterbi detector suffers from hardware complexity since the interleaved two-state trellis diagram for 1-D partial response channel does not sufficiently describe the PRML channel including nonlinearities. In this study, a post compensation for the PRML recording channel including nonlinearities is presented. The nonlinear effects are compensated for after playback and the interleaved two-state trellis for 1-D partial response channel is used to recover data from compensated signal. Simulation results indicate that the performance can be enhanced with a slight increase in hardware complexity.

Original language	English
Pages (from-to)	3033-3035
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	31
Issue number	6
DOIs	https://doi.org/10.1109/20.490260
State	Published - Nov 1995

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title = "Post Compensation for Nonlinear Distortions in PRML Recording Channel",

abstract = "The performance of the PRML recording channel is degraded due to nonlinear distortions introduced in the recording or reproducing processes for high density recordings. Although the maximum likelihood sequence detector (Viterbi detector) might be applied to the channel including these nonlinearities, the Viterbi detector suffers from hardware complexity since the interleaved two-state trellis diagram for 1-D partial response channel does not sufficiently describe the PRML channel including nonlinearities. In this study, a post compensation for the PRML recording channel including nonlinearities is presented. The nonlinear effects are compensated for after playback and the interleaved two-state trellis for 1-D partial response channel is used to recover data from compensated signal. Simulation results indicate that the performance can be enhanced with a slight increase in hardware complexity.",

author = "Yinyi Lin and Yuan, {Ming Fung}",

note = "Funding Information: This work was supported by the National Science Couiicil, R.O.C., under -1 -as o COIltTaCt NSC 83-04@4-E008-010, Figure 1",

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T1 - Post Compensation for Nonlinear Distortions in PRML Recording Channel

AU - Lin, Yinyi

AU - Yuan, Ming Fung

N1 - Funding Information: This work was supported by the National Science Couiicil, R.O.C., under -1 -as o COIltTaCt NSC 83-04@4-E008-010, Figure 1

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N2 - The performance of the PRML recording channel is degraded due to nonlinear distortions introduced in the recording or reproducing processes for high density recordings. Although the maximum likelihood sequence detector (Viterbi detector) might be applied to the channel including these nonlinearities, the Viterbi detector suffers from hardware complexity since the interleaved two-state trellis diagram for 1-D partial response channel does not sufficiently describe the PRML channel including nonlinearities. In this study, a post compensation for the PRML recording channel including nonlinearities is presented. The nonlinear effects are compensated for after playback and the interleaved two-state trellis for 1-D partial response channel is used to recover data from compensated signal. Simulation results indicate that the performance can be enhanced with a slight increase in hardware complexity.

AB - The performance of the PRML recording channel is degraded due to nonlinear distortions introduced in the recording or reproducing processes for high density recordings. Although the maximum likelihood sequence detector (Viterbi detector) might be applied to the channel including these nonlinearities, the Viterbi detector suffers from hardware complexity since the interleaved two-state trellis diagram for 1-D partial response channel does not sufficiently describe the PRML channel including nonlinearities. In this study, a post compensation for the PRML recording channel including nonlinearities is presented. The nonlinear effects are compensated for after playback and the interleaved two-state trellis for 1-D partial response channel is used to recover data from compensated signal. Simulation results indicate that the performance can be enhanced with a slight increase in hardware complexity.

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DO - 10.1109/20.490260

M3 - 期刊論文

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VL - 31

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EP - 3035

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

ER -

Post Compensation for Nonlinear Distortions in PRML Recording Channel

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