Rejection of Bluetooth interference in 802.11 WLANs

Author

Soltanian, Amir ; Van Dyck, Robert E. ; Rebala, Olivier

Author_Institution

Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA

Volume

2

fYear

2002

fDate

2002

Firstpage

932

Abstract

We investigate the use of complex coefficient adaptive filters for interference suppression in the direct sequence spread spectrum IEEE 802.11b system. Extensive simulations are carried out to optimize the parameters of a recursive least-squares lattice filter, which mitigates the effect of a hopping narrowband interferer such as Bluetooth. The BER curves, as well as the probability of packet loss, are presented. Moreover, the limitations of the adaptive filter approach, in the suppression of multiple jammers, is determined. It is shown that with a low order filter, the hopping jammer can be successfully suppressed.

Keywords

Bluetooth; IEEE standards; adaptive filters; error statistics; interference suppression; lattice filters; least squares approximations; recursive filters; spread spectrum communication; wireless LAN; BER curves; Bluetooth; IEEE 802.11b; WLAN; complex coefficient adaptive filters; direct sequence spread spectrum; hopping narrowband interferer; interference suppression; multiple jammers; packet loss probability; recursive least-squares lattice filter; Adaptive filters; Bandwidth; Bluetooth; Frequency; Interference suppression; Jamming; Lattices; Narrowband; Spread spectrum communication; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th

ISSN

1090-3038

Print_ISBN

0-7803-7467-3

Type

conf

DOI

10.1109/VETECF.2002.1040737

Filename

1040737