天线物理特性对MIMO信道空域相关性的影响

doi:10.3969/j.issn.0255-8297.2016.03.002

Abstract

Abstract:

In view of the influence of physical characteristics of an antenna on spatial correlation of a MIMO channel, this paper establishes a MIMO channel model including both coupling and polarization by analyzing and modeling the mechanism of mutual coupling and antenna polarization. Based on this model, a theoretical expression of spatial correlation for the MIMO channel model is derived, and applied to 3GPP SCM standard channel propagation. Simulation results show that the mutual coupling effect becomes significant as the antenna spacing decreases, and the polarization factor varies due to different polarization angle combinations. Moreover, both mutual coupling and polarization can reduce spatial correlation to some degree, but they cannot improve system capacity.

Key words: mutual coupling, channel model, antenna polarization, multi-input multi-output (MIMO), spatial correlation

CLC Number:

TN98

XUE Cui-wei, ZHU Qiu-ming, CHEN Xiao-min, LIAO Zhi-zhong, LIU Xing-lin. Impact of Antenna Characteristic on MIMO Channel Spatial Correlation[J]. Journal of Applied Sciences, 2016, 34(3): 251-262.

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Impact of Antenna Characteristic on MIMO Channel Spatial Correlation

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