Matrix analysis
On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
Capacity scaling laws in MIMO relay networks
IEEE Transactions on Wireless Communications
A stochastic MIMO radio channel model with experimental validation
IEEE Journal on Selected Areas in Communications
Research and application on the regular hexagon covering honeycomb model
ICICA'11 Proceedings of the Second international conference on Information Computing and Applications
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Multiple-input multiple-output (MIMO) technique provides capacity improvement which scales linearly with the number of antennas. However, such improvement cannot be realized in line-of-sight (LOS) environments due to lack of scattering. It had been proposed that if a mobile station can receive signal from multiple repeaters, the artificial multipath could render an equivalent high-rank end-to-endMIMO channel. In this paper, we study whether fixed-location repeaters can induce significant MIMO capacity gain throughout the coverage of a cell in a LOS environment. Our results indicate that, for a wide range of repeater locations and antenna parameters, the majority of the coverage area of a cell can support a high-order capacity scaling factor. We further show that for a capacity scaling factor of 2, the corresponding coverage consists of a small number of simply-connected areas. We present the expressions for the contour of these areas as a function of base station and repeater locations, antenna spacings, and antenna orientations.