天线匹配对莱斯信道下紧凑MIMO系统性能的影响

天线匹配对莱斯信道下紧凑MIMO系统性能的影响

内容简介：深入研究了存在天线互耦和空间相关时,天线匹配网络对莱斯信道下多输入多输出MIMO系统性能的影响,建立了包含相关莱斯信道、天线互耦和匹配网络的(MIMO)系统模型.通过仿真分析了匹配阻抗、天线互耦、空间相关性以及信道衰落环境对包络相关性和信道容量的影响.实验结果表明:莱斯信道下匹配阻抗对MIMO系统的影响与瑞利信道情况下有所不同,适当地选择天线匹配阻抗可以改善MIMO系统的性能.

Abstract：The effect of antenna matching network on MIMO system performance in Rician fading channels in the presence of antenna mutual coupling and spatial correlation is investigated.A MIMO system model which includes correlated Rician fading channels,antenna mutual coupling and matching network is built.Effect of matching impedance,mutual coupling,spatial correlation and channel fading environment on envelope correlation and channel capacity is studied by simulation.The results show that the effect of matching impedance on MIMO system in Rician fading channels is different from that in Rayleigh fading channels.MIMO system performance can be improved by properly selecting antenna matching impedance.

作者：郭强, 周希朗, 张唯炯, 管张均,

关键词：多输入多输出, 天线匹配, 莱斯信道, 空间相关, 互耦,