DocumentCode :
1982067
Title :
Modeling and performance evaluation for dual-polarized Ricean MIMO channels
Author :
Ispas, Adrian ; Xitao Gong ; Schneider, C. ; Ascheid, Gerd ; Thoma, R.
Author_Institution :
Integrated Signal Process. Syst., RWTH Aachen Univ., Aachen, Germany
fYear :
2012
fDate :
3-7 Dec. 2012
Firstpage :
3577
Lastpage :
3582
Abstract :
Dual-polarized (DP) multiple-input multiple-output (MIMO) systems are known to be beneficial in terms of the spectral efficiency under certain conditions on the channel and the signal-to-noise ratio (SNR). In order to assess under which conditions DP antenna setups are advantageous over single-polarized (SP) antenna setups, an accurate yet analytically tractable modeling of such channels is a necessary but challenging task. We propose a novel channel model for DP mobile Ricean MIMO channels for which the statistical channel parameters are readily obtained from a moment-based channel decomposition. An approximate evaluation of the mutual information (MI), expressed as a function of the statistical channel parameters of the proposed channel model, is derived. This approximation allows to assess when it is beneficial in terms of the MI to switch from an SP to a DP setup. Finally, we evaluate the MI for selected SP and DP setups based on channel measurements at 2.53 GHz. We find that the DP setup only provides an improvement in terms of the MI in medium- to high-K-factor scenarios above a certain SNR. The approximate evaluation of the MI is able to accurately reproduce the SNR at which one should switch from an SP to the DP setup.
Keywords :
MIMO communication; Rician channels; antenna arrays; approximation theory; channel estimation; mobile radio; statistical analysis; DP antenna; DP mobile Ricean MIMO channel; DP multiple-input multiple-output system; MI; SNR; approximate evaluation; channel measurements; dual-polarized Ricean MIMO channel; dual-polarized multiple-input multiple-output system; high-K-factor scenario; moment-based channel decomposition; mutual information; signal-to-noise ratio; single-polarized antenna setup; spectral efficiency; statistical channel parameters;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Communications Conference (GLOBECOM), 2012 IEEE
Conference_Location :
Anaheim, CA
ISSN :
1930-529X
Print_ISBN :
978-1-4673-0920-2
Electronic_ISBN :
1930-529X
Type :
conf
DOI :
10.1109/GLOCOM.2012.6503670
Filename :
6503670
Link To Document :
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