分布式目标下行波束形成  

Downlink Beamforming for Distributed Objects

作　　者：徐卫[1] 

机构地区：[1]中国电子科技集团公司第14研究所,南京210013

出　　处：《中国电子科学研究院学报》2006年第1期98-101,共4页Journal of China Academy of Electronics and Information Technology

摘　　要：研究了智能天线在下行链路的应用,利用上行链路接收数据,建立分布式目标信道模型,估计移动用户的发射角、扩展角度和发射功率以及下行信道相关矩阵,确定下行链路的波束形成方法,即对频分复用(FDD)系统进行上行相关矩阵变换,构建下行信道协方差矩阵,利用最大合并比准则获得下行链路权值。计算机仿真证实了这种方法的有效性。This paper studies the application of smart antennas to the downlink. We found channel model for distributed objects, estimate the DOA, angular spread and downlink channel covariance matrix of the mobile user by using uplink data, present a method for downlink beamforming i.e., make uplink covarianee matrix transformation to the system of FDD and get the covarianee matrix of downlink channel. We also get the weight of downlink channel by using Optimum Combining. Simulation results show the effectiveness of the algorithm.

关 键 词：分布式目标 下行链路波束形成 信道相关矩阵 

分 类 号：TN828.6[电子电信—信息与通信工程]