DocumentCode :
1128417
Title :
Characterization of Polarization Diversity at the Mobile
Author :
Brown, Tim W C ; Saunders, Simon R. ; Stavrou, Stavros ; Fiacco, Mauro
Author_Institution :
Univ. of Surrey, London
Volume :
56
Issue :
5
fYear :
2007
Firstpage :
2440
Lastpage :
2447
Abstract :
Two new models used to characterize polarization diversity at the mobile are presented and discussed. The first model is built upon existing theoretical models at a base station to demonstrate how those principles apply to the mobile fading environment. Due to limitations of antennas at the mobile, this extended model, although relevant, is not sufficient to characterize polarization diversity of the antennas; therefore, this paper moves on to show how a new approach to polarization diversity at the mobile exists as an inherent feature within an angular diversity system. Results show that, for two polarizations in a fading environment, the best overall output occurs with a plusmn45deg element configuration, although the diversity combiner itself has optimum performance with a plusmn67.5deg configuration due to lower correlation at the input. The second model is also used to demonstrate how differently polarized dipoles are using polarization diversity inherent within an angular diversity system.
Keywords :
diversity reception; mobile antennas; mobile radio; angular diversity system; diversity combiner; mobile antennas; mobile fading environment; polarization diversity; polarized dipoles; Antenna measurements; Base stations; Communication systems; Councils; Diversity reception; Fading; Mobile antennas; Mobile handsets; Polarization; Power measurement; Antenna diversity; branch difference; correlation; cross-polar ratio; efficiency loss;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2007.898371
Filename :
4305484
Link To Document :
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