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A Simple Two-Dimensional Coding Scheme for Bit Patterned Media

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5 Author(s)
Xiaoying Shao ; Signals & Syst. Group, Univ. of Twente, Enschede, Netherlands ; Alink, L. ; Groenland, J.P.J. ; Abelmann, L.
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This paper presents a simple code to combat the two-dimensional inter-symbol interference (2D-ISI) effect that is present in data storage on magnetic bit patterned media. Whether the ISI effect is constructive or destructive depends on the surrounding bits. Therefore, we propose a simple 2D coding scheme to mitigate the ISI effect. With this 2D coding scheme in square patterned media, every 2-by-3 array has one redundant bit which has the opposite or same value of one of its adjacent bits. Compared to the 2D coding scheme in under the condition of the same areal density, the proposed 2D coding scheme increases the allowable bit-position jitter in square patterned media by 1% at a BER of 10-4; while it allows the effective storage capacity to be increased by around 5.5%.

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Magnetics, IEEE Transactions on  (Volume:47 ,  Issue: 10 )