Reduced-complexity turbo equalization for high-density magnetic recording systems

被引：3

作者：

Supnithi, P ^{[1
]}

Lopes, R

McLaughlin, SW

机构：

[1] King Mongkuts Inst Technol, Fac Engn, Telecommun Engn Dept, Bangkok 10520, Thailand

[2] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

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

关键词：

bidirectional-arbitrated decision feedback; equalizer (BAD); decision-feedback equalizer (DFE); magnetic recording channels; MEEPR4; turbo equalization;

D O I：

10.1109/TMAG.2003.816487

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：

This paper considers a decision-feedback-equalizer (DFE)-based soft decision detector as an alternative for the Bahl-Cocke-Jelinek-Raviv (BCJR) front-end for a coded magnetic recording channel., In previous work, a bidirectional-arbitrated DFE (BAD) was shown to perform in between a BCJR detector and a minimum mean-square error DFE. We propose a soft-output BAD (S-BAD) which takes advantage of the original structure and is suitable for iterative decoding when used with outer codes. We show that with a convolutional code as an outer code, S-BAD performs close to higher complexity detectors.

引用

页码：2585 / 2587

页数：3

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