基于干扰抑制的恒模波束跟踪新算法  

A New Constant Modulus Beam Tracking Algorithm Based on Interference Signals Constrained

作　　者：祝俊[1] 王军[1] 林文长[1] 唐斌[1] 

机构地区：[1]电子科技大学电子工程学院,成都611731

出　　处：《电讯技术》2013年第3期269-273,共5页Telecommunication Engineering

摘　　要：当干扰信号强度不小于期望信号时,常规恒模算法(CMA)会错误跟踪到干扰信号;期望信号导向矢量线性约束恒模算法(LSCCMA)通过对期望信号来波方向约束,可正确跟踪到期望信号,但是算法在干扰信号来波方向上不能形成明显的零陷。为此,提出了基于干扰约束的恒模算法(LIC-CMBTA)。理论分析和仿真结果证明,该算法不仅可以正确跟踪到期望信号,并且可实现在多个强干扰信号来波方向上形成深度可调的干扰零陷,从而提高了常规恒模算法波束跟踪的稳健性。The traditional constant modulus algorithm （CMA） fails to track the desired signal, when it companies with stronger interference signals. Though the linear signals constrained constant modulus algorithm （LSCCMA） can solve the problem when knowing the accurate direction of arrival （DOA）of the desired signal, it cannot form an obvious interference null at the DOA of interference signals. Therefore, a linear interference constant modu- lus beam tracking algorithm （LICCMBTA） is presented in this paper based on above mentioned problems. Theo- retical analysis and simulation results indicate that the LICCMBTA can not only track the desired signal correct- ly, but also forms deep null at the DOA of interference signals simultaneously according to the adjustable null factors. The LICCMBTA improves the robustness of the traditional CMA.

关 键 词：波束形成 智能天线 恒模算法 波束跟踪 干扰约束 干扰零陷 

分 类 号：TN911.72[电子电信—通信与信息系统]