DS-UWB信号DOA的估计方法  

Estimation Method of DOA for DS-UWB Signal

作　　者：夏斌[1] 王文博[1] 

机构地区：[1]北京邮电大学电信工程学院,北京海淀区100876

出　　处：《电子科技大学学报》2007年第2期190-192,共3页Journal of University of Electronic Science and Technology of China

摘　　要：到达角估计是直接序列超宽带系统的关键技术之一。传统的到达角估计方法都基于窄带信号,不能直接应用在该系统。针对该问题,提出了一种基于四阶累积量的到达角估计方法。该方法建立在直接序列超宽带系统阵列信号的频域模型。仿真结果表明该算法有效易行,能准确估计直接序列超宽带信号的到达角。Direction of Arrival （DOA） estimation is one of the key technologies of Direct Sequence Ultra Wide Bandwidth （DS-UWB） system. The traditional DOA estimation methods which are based on narrow-band signals are not suited for such system. So a fourth-order cumulant-based estimation method of DOA is proposed. This method is founded on the frequency domain model of DS-UWB array signals. The spatial spectral function is then derived for analysis. The performance of the estimation algorithm is evaluated by computer simulation and the results show that the algorithm is effective and can guarantee adequate estimation accuracy.

关 键 词：到达角 直接序列超宽带 四阶累积量 

分 类 号：TN914.4[电子电信—通信与信息系统]