摘要
研究了在频分双工智能天线系统中基站与移动台之间上下行信道的协方差矩阵。根据不随频率变化的上下行信道特性 ,得到下行的协方差矩阵 ,以使期望用户接收的信干噪比最大为准则确定下行波束形成的权矢量。不需要估计用户的 DOA和平均信号强度的信息。
This paper is based on the research of covariance matrix of uplink and downlink channel for the smart antenna system with frequency division duplex Through the channel properties that are insensitive to small changes in frequency, the covariance matrix of downlink channel is obtained Downlink beamforming weight vector can be obtained by the method of maximize the received signal to interference and noise ratio (SINR) at the desired user The detection of the user′s DOA and the knowledge about average signal strength information are not required The performance of algorithm is illustrated by computer simulation
出处
《现代电子技术》
2004年第10期3-5,共3页
Modern Electronics Technique
关键词
频分双工
智能天线
信道协方差矩阵
最大信干噪比
frequency division duplex
smart antenna
channel covariance matrix
maximize SINR
