New method for generalised PR target design for perpendicular magnetic recording

Shah, Purav and Ahmed, M. Z. and Kurihara, Y. (2007) New method for generalised PR target design for perpendicular magnetic recording. In: The Eighth Perpendicular Magnetic Recording Conference (PMRC 2007), Oct 15 - 17, 2007, Tokyo International Forum, Tokyo, Japan. (Unpublished)

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Abstract

In recent years, perpendicular magnetic recording (PMR) has been the main topic of interest in the industry. Given current estimates, that would suggest an areal density using PMR as great as one terabit per square inch – making possible in two to three years a 3.5-inch disk drive capable of storing an entire terabyte of data [1]. As the areal density is increased, however, the signal processing aspects of magnetic recording becomes more difficult. The present technique for finding the optimised GPR targets is based on the minmimum mean squared error (MMSE) between the equaliser output and the desired output, subject to the monic constraint [2]. In this paper, we present a new method of designing GPR targets for PMR. This method is based on maximising the ratio of minimum squared eucledian distance of the PR target to the noise penalty introduced by the PR filter.

Item Type:Conference or Workshop Item (Paper)
Research Areas:School of Science and Technology > Science & Technology
ID Code:7764
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Deposited On:03 May 2011 12:46
Last Modified:13 Aug 2014 12:56

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