软件天线系统中的一种环境识别方法  

A strategy of radio environments indentifications in software antenna systems

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,武汉430074

出　　处：《通信学报》2004年第6期89-94,共6页Journal on Communications

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：不同于智能天线,软件天线能够识别所处的电磁环境,并根据所处的环境选择合适的算法,动态地调整波束形状。实现软件天线的关键技术之一就是环境的分类与识别。本文首先结合CDMA系统讨论了环境的分类以及环境识别的准则,并提出了一种基于空间平滑的方法来实现环境的识别。最后给出了几种假设条件下相应的数值模拟结果。Different from smart antenna, software antenna can recognize the status of the radio environments and appropriately select an algorithm to dynamically reconfigure itself by the recognized environment. One of the key technologies to realize software antenna is the classification and identification of the radio environments. In this paper, we discuss the categorization of the radio environments and the criteria of identification in CDMA systems, and a spatial smoothing method to realize the identification of radio environment is proposed. Finally, computer simulations under different conditions are demonstrated.

关 键 词：自适应天线阵列 智能天线 软件天线 环境识别 空间平滑 

分 类 号：TN929.5[电子电信—通信与信息系统]