软件天线不同环境的特征值分布  

Eigenvalue distribution of array covariance matrices for a software antenna system under various environments

作　　者：谭萍[1] 漆兰芬[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2004年第2期1-3,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60171013);华为科技基金资助项目

摘　　要：根据多径传播的特点 ,用入射信号的个数、功率、角度和时延差等参数表征不同环境 .分别讨论了当这些参数不同时 ,软件天线阵列协方差矩阵的特征值分布特点 ,并给出了几种假设情况下相应的数值模拟结果 .结果表明 ,特征值分布是这些多径参数的函数 .因此根据多径参数的大小可以确定适合软件天线环境分类的分类标准 。According to the character of the multipath propagati on , the number of signals impinging on the antenna array and their powers, angles of arrival and delay times of arrival were used to represent different environme nts. Based on some assumptions, eigenvalue distribution of array covariance matr ix was discussed and demonstrated through computer simulations. It is shown that the eigenvalue distribution is a function of these multipath parameters. The va lues of these multipath parameters can be used to make a criterion suitable for environment classification in software antenna systems, and the eigenvalue distr ibution can be used to identify the type of various environments.

关 键 词：软件天线 智能天线 天线阵列 环境分类 环境识别 多径传播 

分 类 号：TN929.5[电子电信—通信与信息系统]