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Modelling and performance prediction for multiple antenna systems using enhanced ray tracing

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3 Author(s)
Ng, K.H. ; Centre for Commun. Res., Bristol, UK ; Tameh, E.K. ; Nix, A.R.

Multiple antenna systems can enhance wireless communication links by improving their capacity and/or reliability. Multiple input multiple output (MIMO) communications are the most common exploitation of this property. When applied to deterministic ray modelling, the computational cost of MIMO predication is a major drawback. Two MIMO modelling approaches are investigated. Both methods make use of an enhanced deterministic ray-tracing propagation model. The first method relies on point-to-point prediction for each of the multiple element-to-element links. The second approach estimates the MIMO link matrix from a single point-to-point ray tracing study. A comparison of normalized capacity and path loss is performed for the two methods in an outdoor city centre environment. For a single input multiple output (SIMO) case, the two modelling approaches are presented and compared with measured array data. Result show that the single point-to-point approximation works well and can significantly reduce run-time when compared with full element-to-element ray tracing.

Published in:

Wireless Communications and Networking Conference, 2005 IEEE  (Volume:2 )

Date of Conference:

13-17 March 2005

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