Optimization of linear multielement antennas for selection combining by means of a Butler matrix in different MIMO environments
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hdl:2117/1664
Tipus de documentArticle
Data publicació2006-11-30
EditorIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Condicions d'accésAccés obert
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Abstract
An optimized linear multielement antenna (MEA)
is presented for selection combining schemes that improves the
selection diversity gain and selection diversity capacity in medium
and low multipath environments, with respect to the performance
achieved with a simple uniform linear array (ULA) using omnidirectional
antennas, while it performs equally as well as a
ULA in highly scattered environments. An analytical investigation
based on the analysis of the correlation coefficients, together with
simulations and extensive measurements, have been carried out
for different fading multiple-input multiple-output environments
ranging from line of sight (LOS) to non-LOS. Two MEAs are
compared: a simple ULA with omnidirectional antennas and a
MEA combining a ULA and a Butler matrix. The measurement
results show that the nature of the proposed MEA is such that it
is adaptive to any propagation scenario by simultaneously taking
advantage of beamforming gain and signal diversity gain.
CitacióGrau, A.; Romeu, J.; Blanch, S.; Jofre, L; de Flaviis, F. Optimization of linear multielement antennas for selection combining by means of a Butler matrix in different MIMO environments. IEEE Transactions on Antennas and Propagation. 2006, vol. 54, núm.11, part 1, p. 3251-3264.
ISSN0018-926X
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