Title :
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
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;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1370918
