A blind fractionally spaced equalizer using higher order statistics

Author

Zhu, Jie ; Cao, Xi-Ren ; Liu, Ruey-wen

Author_Institution

Center for Signal Process., Nanyang Technol. Univ., Singapore

Volume

46

Issue

6

fYear

1999

fDate

6/1/1999 12:00:00 AM

Firstpage

755

Lastpage

764

Abstract

In this paper, we introduce a new blind fractionally spaced equalizer based on the fourth-order statistics of the input symbol sequence. The input symbol sequence is assumed to come from an independent identically distributed finite alphabet with nonzero fourth-order cumulants. We formulate the equalizer as a column vector and compute it by simultaneously diagonalizing a set of matrices obtained from the fourth-order cross-cumulants of the input and output of the equalizer. Simulation results show that this equalizer works well with a short symbol sequence, even if the channel time span is not accurately estimated

Keywords

blind equalisers; digital communication; higher order statistics; intersymbol interference; channel time span; column vector; fractionally spaced equalizer; higher order statistics; identically distributed finite alphabet; input symbol sequence; nonzero fourth-order cumulants; short symbol sequence; Blind equalizers; Computational modeling; Digital communication; Higher order statistics; Intersymbol interference; Phase distortion; Robustness; Signal processing; Signal processing algorithms; Statistical distributions;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.769783

Filename

769783