A new symbol timing synchronization for OFDM based WLANs

Author

Zhou, Liang ; Saito, Miyoshi

Author_Institution

Fujitsu Ltd., Kawasaki, Japan

Volume

2

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

1210

Abstract

A new symbol timing synchronization method for OFDM based WLANs is proposed. The proposed method, which is based on the preamble structure of the IEEE 802.11a combines auto-correlation and cross-correlation algorithms where the thresholds are adaptively adjusted according to the received signal power. The proposed method with low implementation complexity enables a rapid and accurate synchronization even under very low SNR, large carrier frequency offset and multipath fading channels. The simulation results based on the IEEE 802.11a standard are presented to show the effectiveness of the proposed method.

Keywords

OFDM modulation; correlation methods; fading channels; multipath channels; synchronisation; wireless LAN; IEEE 802.11a standard; OFDM; SNR; WLAN; autocorrelation algorithm; carrier frequency offset; cross-correlation algorithm; multipath fading channel; orthogonal frequency division multiplexing; received signal power; signal-to-noise ratio; symbol timing synchronization; wireless local area network; Autocorrelation; Fading; Frequency division multiplexing; Frequency estimation; Frequency synchronization; OFDM; Robustness; Signal to noise ratio; Timing; Wireless LAN;

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.2004.1373890

Filename

1373890