摘要
本文针对应用于DS CDMA系统的针状波束智能天线 ,提出了一种基于最大特征值的DOA检测算法 .由于充分利用了CDMA系统特性 ,这种算法具有结构简单、运算量低、分辨率高的特点 .理论分析和计算机仿真结果表明 ,它具有很高的稳定性和很强的抗多径的能力 .
A novel DOA estimation algorithm based on the largest eigenvalue of the covariance matrix is presented.It mainly applies to the pencil beam smart antenna in DS CDMA systems.Different from other DOA estimation algorithms,it only picks up the main path signal of the target user.Thus it can get a high resolution with lower computational requirements.Theoretical analyses and simulation results show that this method has quite good stability and robustness,especially under severe multipath propagation circumstances.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第9期66-69,共4页
Acta Electronica Sinica
基金
国家自然科学基金!(No.69871 0 1 4 )
国家 863通信高科技项目基金!(No .863 31 7 0 3 0 1 1 5 99)
关键词
智能天线
码分多址
信号方向估计
针状波束
smart antenna
code division multiple access
direction of arrival estimation