Experimental studies of spatial signature variation at 900 MHz for smart antenna systems
- 1 July 1998
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 46 (7) , 953-962
- https://doi.org/10.1109/8.704796
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 applicationsKeywords
This publication has 10 references indexed in Scilit:
- On smoothed rank profile tests in eigenstructure approach to directions-of-arrival estimationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2005
- The capacity of wireless communication systems can be substantially increased by the use of antenna diversityPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Experimental studies of space-division-multiple-access schemes for spectral efficient wireless communicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Measurements of spatial signature of an antenna arrayPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Performance of CDMA mobile communication systems using antenna arraysPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1993
- Fast blind equalization via antenna arraysPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1993
- Optimum diversity combining and equalization in digital data transmission with applications to cellular mobile radio. I. Theoretical considerationsIEEE Transactions on Communications, 1992
- The performance enhancement of multibeam adaptive base-station antennas for cellular land mobile radio systemsIEEE Transactions on Vehicular Technology, 1990
- Forward/backward spatial smoothing techniques for coherent signal identificationIEEE Transactions on Acoustics, Speech, and Signal Processing, 1989
- A subspace rotation approach to signal parameter estimationProceedings of the IEEE, 1986