Title :
Jitter-like noise cancellation using AR model of PR channel in perpendicular magnetic recording
Author :
Okamoto, Yuji ; Masunari, N. ; Yamamoto, Hiroshi ; Osawa, Hideya ; Saito, Hiroshi ; Muraoka, Hiroaki ; Nakamura, Yoshihiko
Author_Institution :
Fac. of Eng., Ehime Univ., Matsuyama, Japan
Abstract :
Summary form only given. Perpendicular magnetic recording is expected to be an efficient recording system, and various studies have been made on signal processing techniques as well as heads and media. The PRML system is one of the most effective techniques. However, it is considered that the dominant jitter-like noise in the perpendicular recording channel degrades the BER performance of PRML systems. Therefore, we propose a Viterbi detector which can cancel the jitter-like noise by using an autoregressive (AR) model (A. Kavcic and A. Patapoutian, IEEE Trans. Magn., vol. 35, no. 5, pp. 2316-2318, 1999), and show that our PRML system has a good BER performance in the perpendicular magnetic recording channel.
Keywords :
Viterbi detection; autoregressive processes; error statistics; interference suppression; jitter; magnetic recording noise; maximum likelihood detection; partial response channels; perpendicular magnetic recording; BER performance; PR channel AR model; PRML system; Viterbi detector; autoregressive model; jitter-like noise cancellation; magnetic heads; magnetic recording media; perpendicular magnetic recording; perpendicular recording channel; signal processing techniques; Bit error rate; Detectors; Jitter; Magnetic noise; Noise cancellation; Noise generators; Perpendicular magnetic recording; Saturation magnetization; Signal to noise ratio; Viterbi algorithm;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001451
