Adaptive Antenna和Switched Beam相结合的新型智能天线  

A new smart antenna system combined with adaptive antenna and switched beam

作　　者：刘召伟[1] 蔡润[1] 沈建锋[1] 王宗欣[1] 

机构地区：[1]复旦大学通信科学与工程系,上海200433

出　　处：《电波科学学报》2005年第4期424-428,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(60272033)

摘　　要：提出了一种上行链路采用Adaptive Beam,下行链路采用Switched Beam的新颖智能天线。其中上行链路是通过由信道估计得到的导向矢量形成指向各用户的Adaptive Beam,下行链路则是通过估计得到的用户分布形成Switched Beam。该智能天线系统既可以抑制上行链路中多用户信号的干扰,也可以使下行波束易于对准用户,使系统有尽可能高的容量且便于实现。In this paper, a new smart antenna system is proposed by a combination Adaptive Antenna with Switched Beam. In the uplink the system forms Adaptive Beam to point each user based on the estimated users＇ steering vector. In the downlink the system forms Switched Beam based on the distribution of users in the cell. This smart antenna system can restrain the interference of other users in the uplink and form the downlink beam to point the users easily, which make the whole system easy to realize and the capacity as large as possible.

关 键 词：智能天线 自适应调整 功率控制 最大似然法 

分 类 号：TN914[电子电信—通信与信息系统]