Performance of Block Diagonalization Broadcasting Scheme for Multiuser MIMO System Operating in Presence of Spatial Correlation and Mutual Coupling

Feng Wang, Marek E Bialkowski, Xia Liu

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DOI: 10.4236/ijcns.2010.33034                

Abstract

In this paper, the capacity of a multiuser Multiple Input Multiple Output (MIMO) system employing the block diagonalization broadcasting scheme in presence of spatial correlation and mutual coupling is investigated. It is shown by computer simulations that, in general, the presence of spatial correlation decreases the capacity of a multiuser MIMO system. However, for some particular antenna element spacing mutual coupling decreases the spatial correlation rendering an increased capacity. The optimized diagonalization broadcasting technique with a two-stage power allocation scheme is proposed and verified. The presented simulations results confirm the advantage of the proposed broadcasting scheme.

Keywords

Multiuser MIMO, Block Diagonalizaiton, Mutual Coupling, Dirty Paper Coding

Conflicts of Interest

The authors declare no conflicts of interest.

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