2-D Decoding Algorithms and Recording Techniques for Bit Patterned Media Feasibility Demonstrations
IEEE Transactions on Magnetics(2016)
摘要
Recording experiments and decoding algorithms are presented for evaluating the bit error rate (BER) of state-of-the-art magnetic bit-patterned media (BPM). The recording experiments are performed with a static tester and conventional hard-disk drive heads. As the reader dimensions are larger than the bit dimensions in both the down-track and the cross-track directions, a 2-D bit-decoding algorithm is required. Two such algorithms are presented in detail together with the methodology implemented to accurately retrieve island positions during recording. Using these techniques, a 1.6 Td/in 2 magnetic BPM is demonstrated to support 2-D BER below 1e-2 under shingled magnetic recording conditions.
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关键词
Viterbi algorithm,Lattices,Magnetic recording,Magnetic heads,Head,Servomotors,Magnetic resonance imaging
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