A robust frequency acquisition algorithm for OFDM systems

Author

Lei, Wen ; Tao, Tao ; Lu, Jianhua

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

1

fYear

2002

fDate

27-30 Oct. 2002

Firstpage

145

Abstract

In this paper, we present a novel frequency synchronization algorithm with an adaptive weighting technique for OFDM systems over time varying fading channels. Specifically, by combining frequency offset estimations from different preambles carefully, an optimal frequency offset estimation can be achieved. Moreover, two simplified schemes with reduced complexity are further contrived. Simulation results show that the proposed algorithm significantly improves the performance of frequency offset estimation compared to the conventional schemes.

Keywords

OFDM modulation; adaptive estimation; fading channels; frequency estimation; synchronisation; time-varying channels; OFDM systems; adaptive weighting technique; complexity; frequency offset estimations; frequency synchronization algorithm; robust frequency acquisition algorithm; time varying fading channels; AWGN channels; Data communication; Degradation; Fading; Frequency estimation; Frequency synchronization; Maximum likelihood estimation; OFDM; Robustness; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on

ISSN

1347-6890

Print_ISBN

0-7803-7442-8

Type

conf

DOI

10.1109/WPMC.2002.1088149

Filename

1088149