Browse > Article
http://dx.doi.org/10.5573/ieek.2013.50.6.003

An Iterative Two-Dimensional Equalizer for Bit Patterned Media Storage Systems Based on Contraction Mapping  

Moon, Woosik (Soongsil University)
Im, Sungbin (Soongsil University)
Park, Sehwang (Soongsil University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.6, 2013 , pp. 3-8 More about this Journal
Abstract
Bit patterned media (BPM) storage is one of the promising technologies to overcome the limitations of the conventional magnetic recording. However, there are some problems in a high areal density BPM storage, inter-track interference, inter-symbol interference and noise which are severely degrading performance of the system with reducing the bit error rate. In this paper, we present a simple iterative two-dimensional equalizer based on the contraction mapping theorem to mitigate these adverse effects. Furthermore, we examine that the channel characteristics of the proposed two-dimensional equalizer satisfies the convergence conditions. In the simulation we demonstrate the bit separation characteristics of the one-dimensional equalizer and the two-dimensional equalizer and evaluate the BER performance of the proposed equalizer comparing with the conventional equalizers. According to the results of experiments, the proposed equalizer is an promising equalizer with maintaining proper complexity for a high areal density BPM storage.
Keywords
2D equalizer; BPM; contraction mapping; storage system;
Citations & Related Records
연도 인용수 순위
  • Reference
1 S. X. Wang and A. M. Taratorin, Magnetic Information Storage Technology, Academic Press, 1999, ch. 12.
2 H. Burkhardt, "Optimal data retrieval for high density storage," Comp Euro '89 Conf. VLSI Computer Peripherals. VLSI and Microelectronic Applications in Intelligent Peripherals and Their Interconnection Networks, pp. 43-48, 1989.
3 J. Kim and J. Lee, "Partial response maximum likelihood detections using two-dimensional soft output Viterbi algorithm with two-dimensional equalizer for holographic data storage," Jpn. J. Apl. Phys., vol. 48, no. 3, pp. 03A033, 2009.   DOI
4 S. Kudekar, J. K. Johnson, and M. Chertkov, "Linear Programming based Detectors for Two-Dimensional Intersymbol Interference Channels," 2011 IEEE International Symposium on Information Theory (ISIT), pp. 2999-3003, 2011.
5 A. W. Naylor and G. R. Sell, Linear Operator Theory in Engineering and Science, Springer-Verlag, 1982.
6 S. Nabavi, "Signal Processing for Bit-Patterned Media Channels with Inter-Track Interference," Ph.D. dissertation, Dept. Elect. Eng. Comp. Sci., Carnegie Mellon Univ., Pittsburgh, PA, 2008.
7 Wu Chang and J. R. Cruz, "Inter-Track Interference Mitigation for Bit-Patterned Magnetic Recording," IEEE Trans. Magnetics, vol. 46, no. 11, pp. 3899-3908, Nov. 2010.   DOI   ScienceOn
8 S. Nabavi, B. V. K. V. Kumar, and J. A. Bain, "Two-dimensional pulse response and media noise modeling for bit-patterned media," IEEE Trans. Magnetics, vol. 44, no. 11, pp. 3789-3792, Nov. 2008.   DOI   ScienceOn
9 J. M. Holtzman, Nonlinear System Theory, Prentice-Hall, Inc., 1970, ch. 2.