A blind equalization with the variable decision region

Author

Kwon, Sung-lark ; Moon, Tae-hyun ; Lee, Jae-hyuck ; Kang, Changeon

Author_Institution

Dept. of Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

2

fYear

1997

fDate

1-4 Sep 1997

Firstpage

322

Abstract

A blind equalization algorithm may be switched to a decision-directed (DD) scheme in order to speed up the convergence rate. In this paper, we propose a new blind equalization scheme that automatically switches to the DD mode. The proposed scheme operates in two modes: a blind equalization mode and a DD mode. The mode is determined by the region in which the equalizer output lies, and the region varies as function of the estimated value of the error variance. Only the equalized signal that falls in the region of confidence is used to calculate the variance. From simulation results, it is shown that this scheme can achieve faster convergence and small MSE

Keywords

convergence; decision theory; digital communication; equalisers; DD mode; blind equalization; convergence; decision-directed scheme; variable decision region; Blind equalizers; Clustering algorithms; Convergence; Decision feedback equalizers; Delay effects; Digital communication; Filters; Maximum likelihood estimation; Moon; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on

Conference_Location

Helsinki

Print_ISBN

0-7803-3871-5

Type

conf

DOI

10.1109/PIMRC.1997.630920

Filename

630920