WLAN smart antenna with Bluetooth interference reduction

Author

Jeng, S.S. ; Tsung, C.W. ; Chang, F.P.

Author_Institution

Dept. of Electr. Eng., Nat. Dong Hwa Univ., Shoufong

Volume

2

Issue

8

fYear

2008

fDate

9/1/2008 12:00:00 AM

Firstpage

1098

Lastpage

1107

Abstract

Because of the coexistence of wireless local area network (WLAN) and Bluetooth at the same ISM band, WLAN systems cannot eliminate the interference by Bluetooth in the physical layer by carrier sense multiple access/collision avoidance. A novel smart antenna system for the WLAN systems to suppress the Bluetooth interference is proposed. The proposed smart antenna system employs the property of multi-carrier transmission of an orthogonal frequency-division multiplexing (OFDM) system to eliminate the correlation among the multi-path components, and the direction of arrival (DOA) estimation algorithm can estimate the correct DOAs. In the simulation, we apply the proposed smart antenna to the 802.11 system using OFDM. The simulation results demonstrate a superior performance under Bluetooth interference.

Keywords

Bluetooth; OFDM modulation; adaptive antenna arrays; carrier sense multiple access; collision avoidance; direction-of-arrival estimation; interference (signal); wireless LAN; Bluetooth interference reduction; ISM band; WLAN smart antenna; carrier sense multiple access; collision avoidance; direction of arrival estimation algorithm; multicarrier transmission; orthogonal frequency-division multiplexing system;

fLanguage

English

Journal_Title

Communications, IET

Publisher

iet

ISSN

1751-8628

Type

jour

DOI

10.1049/iet-com:20070316

Filename

4607200