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Simplified spatial correlation models for clustered MIMO channels with different array configurations
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DOI：10.1109/TVT.2007.897212.png)
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摘要
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An approximate spatial correlation model for clustered multiple-input multiple-output (MIMO) channels is proposed in this paper. The two ingredients for the model are an approximation for uniform linear and circular arrays to avoid numerical integrals and a closed-form expression for the correlation coefficients that is derived for the Laplacian azimuth angle distribution. A new performance metric to compare parametric and nonparametric channel models is proposed and used to show that the proposed model is a good fit to the existing parametric models for low angle spreads (i.e., smaller than 10 degrees). A computational-complexity analysis shows that the proposed method is a numerically efficient way of generating the spatially correlated MIMO channels.
Keyword:
channel capacity
circular arrays
correlation
linear arrays
multipath channels
multiple-input multiple-output (MIMO) systems
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