Hybrid approach between constant modulus and decision feedback blind equalization

Author

Zhang, Zhijun ; Takaya, Kunio ; Dodds, David E.

Author_Institution

Dept. of Electr. Eng., Saskatchewan Univ., Saskatoon, Sask., Canada

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

542

Abstract

Decision-feedback based equalization algorithms are rarely used in blind equalizations because they cannot converge for the "eye-closed" signals. In this paper, we develop a new decision-feedback based algorithm that is suitable for blind equalizations. Its stability and convergence properties are analyzed in the paper. Also, we propose a hybrid blind equalization scheme that combines the decision-feedback based algorithm and the CMA, which can take both advantages of them. Computer simulations with QAM signals have been carried out to test the performances of our new algorithms

Keywords

adaptive filters; blind equalisers; convergence of numerical methods; decision feedback equalisers; numerical stability; quadrature amplitude modulation; CMA; QAM signals; computer simulations; constant modulus algorithm; convergence; decision feedback blind equalization; hybrid algorithm; linear adaptive filter; signal eye-diagram; stability; Blind equalizers; Computer simulation; Convergence; Cost function; Decision feedback equalizers; Delay; Filters; Integrated circuit noise; Quadrature amplitude modulation; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Computers and signal Processing, 2001. PACRIM. 2001 IEEE Pacific Rim Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-7080-5

Type

conf

DOI

10.1109/PACRIM.2001.953690

Filename

953690