ML frame synchronization for IEEE 802.11a WLANs on multipath Rayleigh fading channels

Author

Wu, Yik-Chung ; Yip, Kun-wah ; Ng, Tung-Sang

Author_Institution

Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA

Volume

2

fYear

2003

fDate

25-28 May 2003

Abstract

We develop a frame-synchronization algorithm for IEEE 802.11a WLANs on multipath Rayleigh fading channels based on the ML detection principle. It is found that the resulting test statistics can be realized by a rake-structure energy detector, with each branch extracting energy for a particular delay. Simulation results for channels with rms delay spreads of 50ns and 100ns show that the proposed algorithm, when compared to a convenient method that uses a simple correlator, provides more than an order-of-magnitude reduction in the probability of synchronization failure at high SNR conditions.

Keywords

Rayleigh channels; maximum likelihood detection; multipath channels; synchronisation; wireless LAN; IEEE 802.11a WLAN; SNR; delay spread; failure probability; frame synchronization algorithm; maximum likelihood detection; multipath Rayleigh fading channel; rake-structure energy detector; test statistics; Bandwidth; Correlators; Delay; Detectors; Fading; Frequency synchronization; Maximum likelihood detection; OFDM; Signal resolution; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Conference_Location

Bangkok

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205914

Filename

1205914