On the analysis of switched-beam antennas for the W-CDMA downlink

BH Allen, MA Beach

Research output: Contribution to journalArticle (Academic Journal)peer-review

26 Citations (Scopus)
455 Downloads (Pure)

Abstract

Smart antennas are widely recognized as an enabling technology for addressing the demand of future wireless network capacity when employed in place of traditional fixed-coverage sector antennas. Furthermore, switched-beam antenna systems offer a robust implementation against multipath propagation effects and reduced complexity that is inherent with fully adaptive implementations. This paper introduces a simple closed-form expression for evaluating the capacity increase of W-CDMA cellular networks employing switched-beam antennas. The expression incorporates the effect of practical-antenna patterns and the impact of multipath scattering on code orthogonality, as well as that of pilot signal power. The results show that a reduction in downlink interference of approximately 6 dB can be achieved by installing an eight-beam antenna system in a 120 degrees sector configuration when representative values of these parameters are taken into account
Translated title of the contributionOn the analysis of switched-beam antennas for the W-CDMA downlink
Original languageEnglish
Pages (from-to)569 - 578
Number of pages10
JournalIEEE Transactions on Vehicular Technology
Volume53
Issue number3
DOIs
Publication statusPublished - May 2004

Bibliographical note

Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Rose publication type: Journal article

Terms of use: Copyright © 2004 IEEE. Reprinted from IEEE Transactions on Vehicular Technology. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Keywords

  • antenna arrays
  • beamforming
  • code-division multiple-access (CDMA)
  • digital cellular systems
  • smart antennas
  • switched-beam antennas
  • third-generation wireless systems

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