A modified EVA/DD algorithm for the equalization of non-constant modulus signals based on eigen analysis of cross-cumulants

Author

El-khamy, Said E. ; Shaaban, Shawki E. ; Sadek, Ahmed K.

Author_Institution

Dept. of Electr. Eng., Alexandria Univ., Egypt

fYear

2003

Lastpage

42379

Abstract

This paper presents a modified approach for enhancing the performance of the eigenvector approach (EVA) based on the cross-cumulants criterion for blindly equalizing non-constant modulus signals. The EVA algorithm depends only on the known statistical properties of the data source. The modified approach presented in this paper takes into account the extra information about the known constellation alphabet of the data source through utilizing the decision directed (DD) algorithm. It is shown with simulation that this extra information will dramatically enhance the performance of the modified EVA/DD equalizer.

Keywords

blind equalisers; eigenvalues and eigenfunctions; higher order statistics; QAM; blind equalization; constellation alphabet; cross-cumulants criterion; data source statistical properties; decision directed algorithm; eigen analysis; eigenvector approach; nonconstant modulus signals; quadrature amplitude modulation; Algorithm design and analysis; Bandwidth; Blind equalizers; Convergence; Distortion; Electronic mail; Intersymbol interference; Modems; Signal analysis; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Science Conference, 2003. NRSC 2003. Proceedings of the Twentieth National

Print_ISBN

977-5031-75-3

Type

conf

DOI

10.1109/NRSC.2003.1217339

Filename

1217339