Upper Limits on Achievable Storage Density Using Turbo Equalization in 2-D Magnetic Recording

Author

Jaehyeong No ; Jaekyun Moon

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

51

Issue

11

fYear

2015

Firstpage

1

Lastpage

4

Abstract

The maximum amounts of 2-D intersymbol interference that can be tolerated by the specific types of turbo equalizers are analyzed using the extrinsic information transfer charts. The results translate into the maximum normalized user density that each equalizer can support given an ample channel signal-to-noise ratio. It is shown that a low-complexity self-iterating equalizer based on individually weak linear component equalizers running in different directions provides excellent performance.

Keywords

equalisers; intersymbol interference; magnetic recording; turbo codes; 2-D intersymbol interference; 2-D magnetic recording; achievable storage density; extrinsic information transfer charts; individually weak linear component equalizers; low-complexity self-iterating equalizer; maximum normalized user density; turbo equalization; Arrays; Complexity theory; Decoding; Equalizers; Interference; Signal to noise ratio; 2-D intersymbol interference (ISI); EXIT chart; Two-dimensional intersymbol interference; extrinsic information transfer (EXIT) chart; soft-in soft-out (SISO) linear equalizer (LE); soft-in soft-out linear equalizer; turbo equalizer;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2015.2436994

Filename

7112160