An iterative method for non-linear channel equalization in OFDM systems

Author

Ermolova, N.Y. ; Nefedov, N. ; Haggman, S.G.

Author_Institution

Helsinki Univ. of Technol., Finland

Volume

1

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

484

Abstract

In this paper, we present an algorithm for the nonlinear equalisation in OFDM transmission systems. We suggest to apply a disjoint iterative method for the linear multipath channel estimation and the nonlinearly distorted transmitted data recovery. A simple technique is proposed for the channel re-estimation on the basis of the recovered transmitted data. For the nonlinear noise cancellation, we use a procedure of the nonlinear noise estimation at the receiver. The presented simulation results confirm the efficiency of the proposed algorithm.

Keywords

OFDM modulation; channel estimation; iterative methods; multipath channels; nonlinear distortion; radio receivers; OFDM systems; channel re-estimation; disjoint iterative method; linear multipath channel estimation; nonlinear channel equalization; nonlinear noise cancellation; nonlinear noise estimation; nonlinearly distorted transmitted data recovery; orthogonal frequency division multiplexing; receiver; Baseband; Communication channels; Iterative algorithms; Iterative methods; Maximum likelihood estimation; Multipath channels; Noise cancellation; Nonlinear distortion; OFDM; Signal restoration;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on

Print_ISBN

0-7803-8523-3

Type

conf

DOI

10.1109/PIMRC.2004.1370918

Filename

1370918