A reduced high dimensional FDTS for magneto-optical recording

Author

Higashino, Satoru ; Kakagawa, T. ; Ino, Hiroyuki ; Shimpuku, Yoshihide

Author_Institution

Media Process. Lab., Sony Corp., Shinagawa, Japan

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3268

Lastpage

3270

Abstract

FDTS (Fixed Delay Tree Search) sequence detection using metric calculation is demonstrated. FDTS with a long tree depth is performed using a High Dimensional Signal Space Detector. We propose a new HD (High Dimensional)-FDTS employing a reduction algorithm under conditions of a certain minimum RLL (Run Length Limitation) of code and with ISI (intersymbol interference). We made sure that the HD-FDTS minimum distance taking account of the RLL code was close to that of a Viterbi decoder. The decoder circuit is small and high speed and has a reasonable noise margin for an ideal equalized wave with AWGN (Additive White Gaussian Noise). The HD-FDTS may be applied to PLL (Phase Locked Loop) and AGC (Automatic Gain Control) because of the short decoding delay

Keywords

Gaussian noise; automatic gain control; delays; intersymbol interference; magnetic recording noise; magneto-optical recording; partial response channels; phase locked loops; runlength codes; sequential decoding; signal detection; tree searching; white noise; Viterbi decoder; additive white Gaussian noise; automatic gain control; decoder circuit; decoding delay; fixed delay tree search sequence detection; high dimensional signal space detector; high speed; ideal equalized wave; intersymbol interference; long tree depth; magneto-optical recording; metric calculation; minimum RLL code; noise margin; partial response equalization; phase locked loop; reduced high dimensional FDTS; reduction algorithm; AWGN; Additive white noise; Decoding; Delay; Detectors; High definition video; Intersymbol interference; Magnetooptic recording; Phase locked loops; Signal detection;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617913

Filename

617913