EM channel estimation algorithm for OFDM wireless communication systems

Author

Cai, Jun ; Shen, Xuemin ; Mark, Jon W.

Author_Institution

Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada

Volume

1

fYear

2003

fDate

7-10 Sept. 2003

Firstpage

804

Abstract

In this paper, an expectation and maximization (EM) channel estimation algorithm is proposed for orthogonal frequency-division multiplexing (OFDM) wireless communication systems. The algorithm provides minimum mean square error channel fading estimates without requiring a priori knowledge of the channel fading statistics. Simulation results show that the proposed EM channel estimation algorithm without information on channel fading statistics can provide nearly the same performance as the Kalman estimation algorithm with perfect information on channel fading statistics, and is more suitable for practical OFDM wireless communication systems.

Keywords

OFDM modulation; channel estimation; fading channels; least mean squares methods; statistical analysis; Kalman estimation algorithm; OFDM wireless communication systems; electromagnetic channel estimation algorithm; fading channel estimation; minimum mean square error; orthogonal frequency-division multiplexing; Bandwidth; Channel estimation; Error analysis; Fading; Frequency division multiplexing; Mean square error methods; Multiaccess communication; OFDM; Statistics; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on

Print_ISBN

0-7803-7822-9

Type

conf

DOI

10.1109/PIMRC.2003.1264384

Filename

1264384