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Design Parameter Optimization for Perpendicular Magnetic Recording Systems.
- Source :
-
IEEE Transactions on Magnetics . Oct2006, Vol. 42 Issue 10, p2549-2554. 6p. 2 Graphs. - Publication Year :
- 2006
-
Abstract
- In a perpendicular magnetic recording system, advanced read/write transducers, magnetic media, and signal processing techniques are combined to achieve the highest possible storage density, subject to severe constraints on reliability. This paper proposes a quasi-analytic methodology for exploring the complex design tradeoffs among these system components. We use a simple channel model, characterized by three parameters: isolated voltage pulse width, transition jitter noise variance, and additive electronic/replay head noise power. The system incorporates generalized partial-response equalization and maximum-likelihood detection, along with a Reed-Solomon error-correcting code characterized by its code rate. We calculate a family of ‘design curves’ from which we can determine, for a given set of channel parameters, the maximum user density that can be achieved with a specified codeword error rate, along with the corresponding code rate. The design curves can also be used to determine the acceptable range of channel parameters consistent with a target user density and codeword error rate. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189464
- Volume :
- 42
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Magnetics
- Publication Type :
- Academic Journal
- Accession number :
- 22739483
- Full Text :
- https://doi.org/10.1109/TMAG.2006.880080