Please use this identifier to cite or link to this item: https://doi.org/10.1109/20.908483
Title: Compensation of MR head non-linearities using a saturable transfer function
Authors: Lin, M.Y.
Say, W.F. 
Mathew, G.
Bergmans, J.W.M.
Ye, W.
Keywords: Channel characterization
Magnetic recording
MR asymmetry
MR heads
MR saturation
Nonlinear distortion
Issue Date: Sep-2000
Citation: Lin, M.Y., Say, W.F., Mathew, G., Bergmans, J.W.M., Ye, W. (2000-09). Compensation of MR head non-linearities using a saturable transfer function. IEEE Transactions on Magnetics 36 (5 I) : 2490-2492. ScholarBank@NUS Repository. https://doi.org/10.1109/20.908483
Abstract: It is well known that the nonlinear behavior of Magneto-Resistive (MR) heads result in the isolated pulses having asymmetry and saturation. These nonlinear effects can be quantified by measuring the positive and negative isolated pulses. In this paper, we propose a saturable model for estimating the MR nonlinearity from read-back signals. It models the nonlinearity using bias and saturation parameters. The proposed model can be used to compensate the nonlinearity in the read-back signal, thus providing a way to linearize the channel. Simulations done using measured data demonstrate the effectiveness of the proposed model.
Source Title: IEEE Transactions on Magnetics
URI: http://scholarbank.nus.edu.sg/handle/10635/72531
ISSN: 00189464
DOI: 10.1109/20.908483
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