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Some Analysis in Distributed MIMO Systems

Huaiyu Dai1, Hongyuan Zhang2, and Quan Zhou2
1. Department of Electrical and Computer Engineering, NC State University, Raleigh, NC 27695 USA
2. Hongyuan Zhang and Quan Zhou
Abstract—The predicted capacity gain of a traditional colocatedMIMO system is often severely limited in realisticpropagation scenarios, especially when the number ofantennas becomes large. Recently, a generalized paradigmfor multiple-antenna communications, distributed MIMO, isproposed as a remedy. In this paper, through asymptoticlarge-system analysis, we provide solid justifications on theadvantages of distributed MIMO over co-located MIMOwhen communication channels are subject to spatialcorrelation and shadow fading. We also exploit inherentmacrodiversity in distributed MIMO to devise a costeffectivelink adaptation scheme that achieves significantperformance gain.

Index Terms—capacity, distributed antenna, MIMOsystems, shadowing, spatial correlation

Cite:  Huaiyu Dai, Hongyuan Zhang, and Quan Zhou, "Some Analysis in Distributed MIMO Systems," Journal of Communications, vol. 2, no. 3, pp. 43-50, 2007.
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