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Spatial Capacity Estimation for Correlated MIMO Channels Based on Measured SISO Data Records

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5 Author(s)
Andreas Knopp ; Munich University of the Bundeswehr, Institute for Communications Engineering, 85579 Neubiberg, Germany. ; Christian A. Hofmann ; Robert T. Schwarz ; Mohamed Chouayakh
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A novel strategy of precalculating potential MIMO spectral efficiencies of correlated channels based on single, measured or appropriately modeled SISO impulse responses is presented. Additionally, the model is capable of comprising the physical nature of the channel in form of its frequency response. The method is applied to indoor MIMO channels where the correlation is introduced by a strong Line-Of-Sight signal component as well as low mobility. It is verified by simulation as well as based on results from measurements which were derived using a fast MIMO radio channel sounder. A spherical wave model is applied and the distributions of angle of arrival and angle of departure turn out to be important modeling parameters. Consequentially, earlier results on the impact of the antenna arrangement on the MIMO spectral efficiency are supported for the observed, short-range channels. The presented strategy is especially viable to utilize and extend available data records from SISO measurement campaigns to the MIMO case, where the focus lies on the prediction of spatial MIMO spectral efficiencies.

Published in:

2007 4th International Symposium on Wireless Communication Systems

Date of Conference:

17-19 Oct. 2007