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Two-dimensional equalization/detection for patterned media storage

Keskinöz, Mehmet (2008) Two-dimensional equalization/detection for patterned media storage. IEEE Transactions on Magnetics, 44 (4). pp. 533-539. ISSN 0018-9464

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Official URL: http://dx.doi.org/10.1109/TMAG.2007.914966

Abstract

Although patterned media storage (PMS) is a promising candidate for ultrahigh-capacity magnetic data storage, as the capacity of PMS increases, the bit error rate (BER) performance of the system is degraded by increased two-dimensional intersymbol interference (2D-ISI), which results from intertrack interference (ITI), intersymbol interference (ISI), and noise. To improve the system performance under these adverse effects and to increase the capacity, in this paper, we propose to use and/or devise two-dimensional equalization/detection techniques: iterative decision feedback detection (IDFD) and two-dimensional generalized partial response equalization, which is optimized in minimum mean square error (MMSE), followed by one-dimensional Viterbi algorithm (2D-GPR/1D-VA). We evaluate the performance of the proposed methods by using numerical experiments under different amounts of 2D-ISI and noise. Simulation results suggest that under high storage density, the performance of the IDFD is improved by using more iterations and that under the same computational load, 2D-GPR/1D-VA performs better than IDFD. 2D-GPR/1D-VA, therefore, is a good candidate for ultrahigh-capacity PMS.

Item Type:Article
Uncontrolled Keywords:intersymbol interference; patterned media; two-dimensional equalization/detection
Subjects:UNSPECIFIED
ID Code:11171
Deposited By:Mehmet Keskinöz
Deposited On:22 Dec 2008 07:53
Last Modified:25 May 2011 14:06

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