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Modal Network Model for MIMO Antenna in-System Optimization

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4 Author(s)
Pontes, J. ; Dept. de Electromagnetismo y Teor. de Circuitos, Univ. Politec. de Madrid. E.T.S.I. Telecomun., Madrid, Spain ; Corcoles, J. ; Gonzalez, M.A. ; Zwick, T.

The analysis of MIMO systems is described with the aid of a novel modal network model. For this purpose the capacity performance of typical base station and mobile station antennas in a simulated macro-cellular scenario with varying antenna inter element spacings and antenna rotation will be studied. The model is based on the modal description of typical receiving and transmitting antennas. In this manner a significant simulation time reduction is achieved which allows for faster analysis and optimization. To prove this the effects of both the mobile and base station antennas are investigated. Moreover, for the more restrictive case of base station antennas, a fully modal descriptive model is proven to yield very similar results as those from measured commercial antennas. It is found that the modal approach improves simulation speed without loss of accuracy or generality. Simulations are done for the city of Karlsruhe with a three-dimensional Ray-tracing tool.

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Antennas and Propagation, IEEE Transactions on  (Volume:59 ,  Issue: 2 )