Feedforward noise canceller for PR1ML

Author

Marukawa, S. ; Hiratsuka, T. ; Ogura, Y. ; Urita, K.

Author_Institution

Res. & Dev. Lab., Matsushita-Kotobuki Electron. Ind. Ltd., Ehime, Japan

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

2800

Lastpage

2802

Abstract

We present the performance of a feedforward noise canceller (FNC) for the PR1 [(1+D)] channel combined with an 8/10 DC free code. It appears the PR1 channel can be superior to PR4 [(1-D)(1+D)] and EPR4 [(1-D)(1+D)²] for high density magnetic recording due to a characteristic of high frequency suppression. Simulation results show that PR1 with FNC is better than EPR4 for K⩾2.5 [K=PW₅₀/T]. We adapted PR1 with FNC into an actual DDS3 (Digital Data Storage 3) system and we got an improved result. Applying FNC to DDS3 system can improve the error rate by around 10²

Keywords

feedforward; interference suppression; magnetic recording noise; maximum likelihood detection; partial response channels; DC free code; Digital Data Storage 3 system; PR1ML channel; feedforward noise canceller; high density magnetic recording; high frequency suppression; Bit error rate; Cutoff frequency; Detectors; Equalizers; Error analysis; Finite impulse response filter; Frequency; Low pass filters; Low-frequency noise; Magnetic recording; Magnetic separation; Memory; Noise cancellation; Signal to noise ratio;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.617735

Filename

617735