MIMO无线信道中空间相关性的测量方法  

A Measurement Method of Spatial Correlation in MIMO Wireless Channel

作　　者：张龙 冯正和[1] 

机构地区：[1]清华大学电子工程系

出　　处：《电子设计应用》2006年第8期120-121,124,共3页Electronic Design & Application World

摘　　要：本文提出了一种在MIMO信道发射端和接收端的任意方向上测量空间相关性的方法。通过测量到达角度、离开角度和多径通道的相关功率谱来计算MIMO信道发射端和接收端的角度能量谱和空间相关度。由相关阵列对MIMO信道容量进行估值,估值结果与直接测量值一致。This paper presents a method to determine transmit and receive sides spatial correlations for an arbitrary antenna spacing in the arrays from a directional MIMO channel measurement. The measured angles of arrival, angles of departure and corresponding powers of the multipath components are used to compute the power angle spectrum and correlation for the transmitter and receiver sides of the MIMO propagation channel. MIMO capacity can be obtained from spatial correlation matrix. Capacity results from the correlation measurements using a MIMO channel model are closely match the directly measured MIMO capacity for different propagation conditions.

关 键 词：MIMO信道 空间相关性 平滑相关 ESPRIT 

分 类 号：TN92[电子电信—通信与信息系统]