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Modeling and Two-Dimensional Equalization for Bit-Patterned Media Channels With Media Noise

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5 Author(s)
Yibin Ng ; Data Storage Inst. (DSI), Singapore, Singapore ; Kui Cai ; Kumar, B.V.K.V. ; Zhang, Songhua
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In this paper, we first propose a simple but general analytical channel model for bit-patterned media (BPM) systems. It facilitates the generation of accurate readback signals with a large amount of media noise, as well as the analytical design of equalizer and channel partial response (PR) target. We further propose an analytical approach to jointly design the two-dimensional (2-D) equalizer with one-dimensional (1-D) channel PR target for BPM systems with media noise, according to the minimum mean square error (MMSE) criterion with monic constraint. Simulation results show that the proposed 2-D equalizer with 1-D target based approach achieves significant performance gain over the system designed without considering media noise.

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Magnetics, IEEE Transactions on  (Volume:45 ,  Issue: 10 )