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Low-complexity smart antenna methods for third-generation W-CDMA systems

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)2382 - 2396
Number of pages15
JournalIEEE Transactions on Vehicular Technology
Journal issue6
StatePublished - Nov 2000


There is still an open debate within the research community regarding the likely performance enhancement of smart antennas versus their complexity for commercial wireless applications. The goal of the study presented in this paper is to investigate the performance improvement attainable using relatively simple smart antenna techniques when applied to the third-generation W-CDMA air interface. Methods to achieve this goal include fixed multibeam architectures with different beam selection algorithms (maximum power criterion, combined beams) or adaptive solutions driven by relatively simple direction finding algorithms. After comparing these methods against each other for several representative scenarios, some issues related to the sensitivity of these methods are also studied, (e.g., robustness to environment, mismatches originating from implementation limitations, etc.). Results indicate that overall, conventional beamforming seems to be the best choice in terms of balancing the performance and complexity requirements, in particular when the problem with interfering high-bit-rate W-CDMA users is considered

Additional information

Publisher: Institute of Electrical and Electronic Engineers (IEEE) Rose publication type: Journal article Sponsorship: The authors wish to thank Prof. J. McGeehan, Dr. M. Beach, and Dr. A. Nix for their support during this activity. R. Piechocki wishes to thank Fujitsu Europe Telecom R & D Centre Ltd. for sponsoring his Ph.D. work Terms of use: Copyright © 2000 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 By choosing to view this document, you agree to all provisions of the copyright laws protecting it

    Research areas

  • adaptive algorithms, smart antennas, third, wavelength code division mupltiple access

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