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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/4643

Title: Beam-Selection Performance Analysis of a Switched Multibeam Antenna System in Mobile Communications Environments
Authors: Matsumoto, Tadashi
Nishioka, Seiji
Hodder, David J.
Keywords: Digital cellular system
switched multibeam antenna
TDMA
time diversity
unique word detection
Issue Date: 1997-02
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Magazine name: IEEE Transactions on Vehicular Technology
Volume: 46
Number: 1
Start page: 10
End page: 20
DOI: 10.1109/25.554733
Abstract: The probability of incorrect beam selection (PIBS) with a switched multibeam antenna system is theoretically analyzed under power-limited and interference-limited mobile communication environments. Periodic transmission of a unique word sequence followed by the information symbol sequence is assumed. The model of beam selection used in this paper is based upon a simple three-stage mechanism: 1) signal validation; 2) averaging; and 3) selection of the largest output. Complex correlation peaks corresponding to the unique words, detected by the matched filter for the signal validation, are averaged over several consecutive unique words, and a beam having the largest output is selected. Equally weighted noncoherent integration is assumed for the averaging process. The beam selection takes place frame-by-frame. The first half of this paper is devoted to the PIBS derivation for a simple switched two-beam antenna system. Numerical calculation results are then presented. The latter half of this paper investigates the impact of the incorrect beam selection on the overall average signal-to-noise (SNR) power ratio and signal-to-interference (SIR) power ratio. The amount of the overall SNR (or SIR) improvement over the omnidirectional antenna depends on the propagation conditions. In general, larger improvements can be achieved by smaller values of the PIBS.
Rights: Copyright (c)1997 IEEE. Reprinted from IEEE Transactions on Vehicular Technology , 46(1), 1997, 10-20. 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 JAIST'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.
URI: http://hdl.handle.net/10119/4643
Material Type: publisher
Appears in Collections:b10-1. 雑誌掲載論文 (Journal Articles)

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