基于球面波的非平稳性MIMO信道建模  

Stochastic MIMO Channel Modeling Based on Spherical Vector Wave

作　　者：李钢 严伟 袁玩贵[3] LI Gang;YAN Wei;YUAN Wangui(School of Internet of Things Engineering,Jiangnan University,Wuxi 214122,China;Sinovatio Technology Co.,Ltd.,Nanjing 211153,China;School of Science,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡214122 [2]南京中新赛克科技有限责任公司,江苏南京211153 [3]江南大学理学院,江苏无锡214122

出　　处：《无线电通信技术》2023年第3期465-471,共7页Radio Communications Technology

基　　金：中国科学院上海微系统与信息技术研究所无线传感网与通信重点实验室开放课题(20190917)。

摘　　要：提出了一种新的无线通信物理信道模型,可用于研究多输入多输出(Multiple-Input Multiple-Output, MIMO)系统中天线与传播信道之间的相互作用。利用球矢量波系数展开、天线散射矩阵和非平稳性建模,推导出了信道矩阵的扩展形式。引入了剥离天线影响的信道矩阵,并将其协方差统计量表示为共极化分量和交叉极化分量的双边功率角谱(Double-Directional Power-Angular Spectrum, DD-PAS)的函数。模型对于研究指定传播信道中天线设计具有重要价值,对MIMO系统在典型的传播环境中的应用进行了仿真分析,验证了所提出信道的准确性,结果表明提出的模型可以用于未来无线通信系统建设中。A new physical channel model for wireless communication is proposed,which can be used to study the interaction between antennas and propagation channels in Multiple-Input Multiple-Output(MIMO)systems.Using spherical vector wave coefficient expansion,antenna scattering matrix and non-stationary modeling,the extended form of channel matrix is derived.The channel matrix that strips the influence of the antenna is introduced,and its covariance statistic is expressed as a function of the Double-Directional Power-Angular Spectrum(DD-PAS)of the common-polarization component and the cross-polarization component.This model is of great value for studying antenna design in a specified propagation channel.The application of MIMO system in a typical propagation environment is simulated.The accuracy of the proposed channel is verified.The results show that the model can be used in the construction of wireless communication systems in the future.

关 键 词：多输入多输出 信道建模 球面波 天线散射矩阵 

分 类 号：TN919.23[电子电信—通信与信息系统]