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)


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
Issue number3
Publication statusPublished - May 2004

Bibliographical note

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

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

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