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8 December 1995 Write-read-write signal precompensation techniques for magnetic recording
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Proceedings Volume 2605, Coding and Signal Processing for Information Storage; (1995) https://doi.org/10.1117/12.228242
Event: Photonics East '95, 1995, Philadelphia, PA, United States
Abstract
Medium noise in magnetic recording has been shown to be caused in part by the magnetic microstructure of the medium, which is determined at the time of manufacture of the medium. Systems can be designed to exploit this spatial dependence to increase recording density. Signal precompensation to achieve this is described here using two possible models for medium noise: additive and multiplicative. Based upon recent experimental results, the multiplicative model should be the more realistic of the two models, and hence is discussed in more detail. The anticipated increase in performance is quantified in terms of the signals written on the medium and the noise power.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joseph A. O'Sullivan, Dakshi Agrawal, Ronald S. Indeck, and Marcel W. Muller "Write-read-write signal precompensation techniques for magnetic recording", Proc. SPIE 2605, Coding and Signal Processing for Information Storage, (8 December 1995); doi: 10.1117/12.228242; https://doi.org/10.1117/12.228242
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