Abstract
In two-dimensional magnetic recording, detection for a perfect writer and perfect reader based on an iterative threshold technique are compared to detection employing single threshold and adaptive threshold techniques. The simulation indicates that the algorithm can reach a BER of 9.3% compared to 11.2% and 10.5% for the latter cases when the bit size is 8 by 8 nm with a grain of 8.7 nm diameter. This increases data capacity by 11% to 6.6 TBits/inch 2. Additionally, detection with an array of three conventional heads has been studied: the simulation shows that for bits with dimension of 12 × 12 nm, grains of 8.7 nm diameter and reader width of 18 nm, the BER drops from 11.3% for a single conventional head to 5.4% for the head array with a two-dimensional generalized partial response equalizer at the optimum offset of 10 nm. The density is increased by 42%, reaching 4.0 Tbits/Inch 2.
Original language | English (US) |
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Article number | 6332972 |
Pages (from-to) | 4582-4585 |
Number of pages | 4 |
Journal | IEEE Transactions on Magnetics |
Volume | 48 |
Issue number | 11 |
DOIs | |
State | Published - 2012 |
Bibliographical note
Funding Information:This work was supported by National Science Foundation Contract No. ECCS-0925366. The authors thank F. Erden for useful discussion.
Keywords
- ECC media
- Read head array
- Two-dimensional equalization
- Two-dimensional magnetic recording (TDMR)