NDLI: Experimental studies of spatial signature variation at 900 MHz for smart antenna systems

Content Provider	IEEE Xplore Digital Library
Author	Shiann-Shiun Jeng Xu, G. Hsin-Piao Lin Vogel, W.J.
Copyright Year	1963
Abstract	A spatial signature is the response vector of a base-station antenna array to a mobile unit at a certain location. Mobile subscribers at different locations exhibit different spatial signatures. The exploitation of spatial diversity (or the difference of spatial signatures) is the basic idea behind the so-called space-division multiple-access (SDMA) scheme, which can be used to significantly increase the channel capacity and quality of a wireless communication system. Although SDMA schemes have been studied by a number of researchers, most of these studies are based on theoretical analyses and computer simulations with ideal assumptions. Not much experimental study, has been reported on spatial signature variation due to nonideal perturbations in a real wireless communication environment. The purpose of this paper is to present, for the first time, extensive experimental results of spatial signature variation using a smart antenna testbed. The results presented include the spatial signature variation with time, frequency, small displacement, multipath angle spread and beamforming performance. The experimental results show the rich spatial diversity and potential benefits of using an antenna array for wireless communication applications.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	953
Ending Page	962
Page Count	10
File Size	232457
File Format	PDF
ISSN	0018926X
Volume Number	46
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Wireless communication Antenna arrays Channel capacity Frequency conversion Mobile antennas Computer simulation Base stations Time division multiple access Radio frequency
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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