A fast adaptive RAM-based decision feedback equalizer for partial-response nonlinear recording channels

Author

Hwang, H.-C. ; Wei, C.-H.

Author_Institution

Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

3

fYear

1994

fDate

30 May-2 Jun 1994

Firstpage

161

Abstract

The adaptive RAM-DFE, which uses a random access memory replacing the transversal feedback filter of the decision feedback equalizer (DFE), has been used to compensate for the trailing nonlinear intersymbol interference (ISI). However, the convergence speed of the RAM-DFE is very slow. The learning speed can be improved by using memory decomposition method to modify the RAM structure. The modified RAM-DFE structure is then applied to the partial response equalization for nonlinear magnetic recording channels. Computer simulations show that the proposed scheme has a faster convergence speed

Keywords

adaptive equalisers; decision feedback equalisers; intersymbol interference; magnetic recording; partial response channels; random-access storage; adaptive RAM-based system; convergence speed; decision feedback equalizer; learning speed; magnetic recording channels; memory decomposition method; partial-response nonlinear recording channels; trailing nonlinear intersymbol interference; Adaptive filters; Computer simulation; Convergence; Decision feedback equalizers; Intersymbol interference; Magnetic recording; Nonlinear magnetics; Random access memory; Read-write memory; Transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-1915-X

Type

conf

DOI

10.1109/ISCAS.1994.409130

Filename

409130