A nonlinear model and equalizer for magnetic recording channels

Author

Kim, Yungsoo ; Kim, Ki-Ho

Author_Institution

Digital Commun. Lab., Samsung Adv. Inst. of Technol., Kyunggi-Do, South Korea

Volume

2

fYear

1998

fDate

7-11 Jun 1998

Firstpage

668

Abstract

We propose a novel nonlinear model and a nonlinear equalizer for high density magnetic recording channels. The model is based on the superposition of data transition dependent pulses. The proposed nonlinear equalizer utilizes the proposed nonlinear model. When tested with actual read back signals, the model using 2 and 32 pulses achieved gains of 4.6 dB and 29.4 dB, respectively, over the linear model. Also the proposed nonlinear equalizer attained a gain of 1.5 dB over the RAM-DFE at a bit error rate of 1E10^-6 when the nonlinear signal was generated by a finite state machine model

Keywords

digital magnetic recording; equalisers; finite state machines; magnetic storage; signal detection; RAM-DFE; bit error rate; data transition dependent pulses; digital magnetic storage; finite state machine model; gain; high density magnetic recording channels; nonlinear equalizer; nonlinear model; nonlinear signal generation; pulses superposition; read back signals; threshold detector; Bit error rate; Detectors; Digital communication; Equalizers; Gain; Magnetic recording; Nonlinear distortion; Pulse measurements; Signal generators; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-4788-9

Type

conf

DOI

10.1109/ICC.1998.685094

Filename

685094