一种稳健的周期平稳信号的盲波束形成算法  

A Robust Blind Adaptive Beamforming Algorithm for Cyclostationary Signal

作　　者：高荣山[1] 

机构地区：[1]中国电波传播研究所,山东青岛266107

出　　处：《通信技术》2013年第4期68-70,76,共4页Communications Technology

摘　　要：因为不需信号个数和导向向量等任何参考信息,基于周期平稳信号的盲波束形成算法在信号处理领域得到非常广泛的应用,然而这类方法是建立在循环频率准确已知基础上的,在实际应用中往往不是如此,循环频率的估计误差将导致算法性能变差,为了改进这点不足,在传统的循环自适应波束形成(CAB)算法的基础上,提出了一种改进的CAB盲波束形成算法,经理论分析和计算机仿真,证明了该算法是有效的。Due to the fact that there is no need of reference signal, the blind adaptive beamforming algorithm based on cyclostationariy signals receives wide application in signal processing. However these methods are mostly based on the assumption that the cycle frequency of the desired signal is precisely known, but this may not be true in practice. This paper proposes an improved robust algorithm based on the conventional CAB algorithm to combat the mismatch in the cycle frequency. Theoretical analysis and computer simulation indicate the effectiveness and robustness of the proposed algorithm.

关 键 词：周期平稳信号 循环相关 盲波束形成 循环自适应波束形成算法 

分 类 号：TN911.7[电子电信—通信与信息系统]