Optimizing the bit aspect ratio of a recording system using an information-theoretic criterion

被引：3

作者：

Yang, SH ^{[1
]}

Kavcic, A

Ryan, W

机构：

[1] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 05期

关键词：

areal density; bit aspect ratio; channel capacity; channel modeling; information rate; magnetic recording channel; microtrack model;

D O I：

10.1109/TMAG.2003.815437

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A method is developed to determine the optimal bit aspect ratio of a recording system which maximizes the information density per unit. area of the recording medium. The areal information density is computed as the achievable mutual information, rate divided by the area of each binary symbol on the medium. A data-dependent autoregressive noise model is fitted to the recording channel and the achievable information rate of the recording channel is estimated by computing the achievable information rate of the channel model.

引用

页码：2228 / 2230

页数：3

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