NDLI: Impact Analysis of Directional Antennas and Multiantenna Beamformers on Radio Transmission

Content Provider	IEEE Xplore Digital Library
Author	Haibing Yang Herben, M.H.A.J. Akkermans, I.J.A.G. Smulders, P.F.M.
Copyright Year	1967
Abstract	The impact of directional antennas and multiantenna beamformers on radio transmission is formulated in terms of the gain of the Rician -factor, the reduction of the root-mean-squared delay spread, and the gain of the signal-to-noise ratio at the receiver for Rician fading channels in multipath environments. The analysis is based on a double-directional channel model. For the analytical formulation, the joint channel spectrum is assumed to be decomposable into separate spectra in time and angular domains. By way of illustration, closed-form expressions for the impact of hypothetical cosine-shaped antenna patternsand conventional beamformers are derived for channels with uniform angular spectra and an exponential decaying delay spectrum. The impact factors are explicitly related to the antenna beamwidth and the number of antenna elements. In addition, the effect of misalignment between the antenna main beam and the direct path is included in the analysis. The quantitative analysis given in this paper is important for radio system design, particularly for the design of antennas and multiantenna beamformer configurations.
Sponsorship	IEEE Vehicular Technology Society
Starting Page	1695
Ending Page	1707
Page Count	13
File Size	570499
File Format	PDF
ISSN	00189545
Volume Number	57
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Directional antennas Rician channels Array signal processing Delay Directive antennas Receivers Frequency Antenna measurements Antennas and propagation Transmitting antennas root-mean-squared (rms) delay spread (RDS) Conventional beamforming double-directional channel half-power beamwidth (HPBW) multiantenna beamforming Rician $K$ -factor multi-antenna beamforming half-power beamwidth Rician K-factor RMS delay spread
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Automotive Engineering Computer Networks and Communications Electrical and Electronic Engineering Aerospace Engineering

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