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A Study on Performance Analysis of Smart Antennas for WLAN System in a Multipath Environment  

Kim Hyun-Woong (Department of Electric Engineering, University of Incheon)
Chang Byong-Kun (Department of Electric Engineering, University of Incheon)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.2, 2005 , pp. 182-188 More about this Journal
Abstract
This paper presents an efficient technique for interference suppression in IEEE 802.11b WLAN systems. A linearly constrained adaptive array processor which may improve reception performance of WLAN device by reducing co-channel interference signal and multipath effects effectively was proposed. A spatial smoothing method is used to prevent cancellation of a desired signal in a coherent environment and also integral nulling method is employed to improve the array performance in indoor environment. It was shown that the integral nulling approach performed best while the spatial smoothing method performed better than linearly constrained array processing. The performance of the WLAN system may be improved by the proposed methods which reduce co-channel, coherent, and WPAN interferences effectively.
Keywords
WLAN; WPAN; Array; Smart Antenna;
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