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Reader Design for Bit Patterned Media Recording at 10 Tb/in ^{2} Density

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2 Author(s)
Yao Wang ; Electr. & Comput. Eng. Dept., Univ. of Minnesota, Minneapolis, MN, USA ; Victora, R.H.

A reader design for reading back at very high density is proposed for bit patterned media recording (BPMR). The idea is a rotated sense head, so that the shields are aligned down-track, combined with oversampled signal processing to regain the lost down-track resolution. Simulation results show that the proposed reader has more than 20 dB gain compared with a normally oriented head array for reading back at 10 Tbit/in2. The tradeoff between oversampling and increased target length is examined. Island jitters are found to be non-Gaussian distributed. The performance of the new design is investigated for various bit patterns, island jitter and head noise.

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Magnetics, IEEE Transactions on  (Volume:49 ,  Issue: 10 )