Property-restoral algorithms for blind equalization of OFDM

Author

Jones, Douglas L.

Author_Institution

Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA

Volume

1

fYear

2003

fDate

9-12 Nov. 2003

Firstpage

619

Abstract

Adaptive blind equalization for OFDM can be difficult due to its nearly Gaussian marginal density. OFDM has unique properties, however, including constant mean block energy and zero-padded or circular-prefix guard bands, that allow blind equalization. The hybrid LMS/VCMA algorithms introduced here blindly restore the guard-band properties while maintaining a constant mean block energy. These simple, low-complexity adaptive algorithms demonstrate rapid convergence in simulations.

Keywords

OFDM modulation; adaptive equalisers; blind equalisers; least mean squares methods; Gaussian marginal density; OFDM system; adaptive algorithm; adaptive blind equalization; circular-prefix guard band; hybrid LMS-vector constant modulus algorithm; least mean square algorithm; mean block energy; orthogonal frequency division multiplexing; property-restoral algorithm; zero-padded guard band; Adaptive algorithm; Adaptive equalizers; Adaptive filters; Bandwidth; Blind equalizers; Convergence; Least squares approximation; OFDM; Signal restoration; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on

Print_ISBN

0-7803-8104-1

Type

conf

DOI

10.1109/ACSSC.2003.1291985

Filename

1291985