ISSN : 1796-2021
Volume : 2    Issue : 3    Date : May 2007

Some Analysis in Distributed MIMO Systems
Huaiyu Dai, Hongyuan Zhang, and Quan Zhou
Page(s): 43-50
Full Text:
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The predicted capacity gain of a traditional colocated MIMO system is often severely limited in
realistic propagation scenarios, especially when the number of antennas becomes large. Recently,
a generalized paradigm for multiple-antenna communications, distributed MIMO, is proposed as a
remedy. In this paper, through asymptotic large-system analysis, we provide solid justifications on
the advantages of distributed MIMO over co-located MIMO when communication channels are
subject to spatial correlation and shadow fading. We also exploit inherent macrodiversity in
distributed MIMO to devise a costeffective link adaptation scheme that achieves significant
performance gain.

Index Terms
capacity, distributed antenna, MIMO systems, shadowing, spatial correlation