基于分数低阶统计量的线性约束恒模盲自适应波束形成方法  

A linearly constrained constant modulus approach to blind adaptive beamforming based on FLOS

作　　者：赵知劲[1] 董科海[1] 尚俊娜[1] 

机构地区：[1]杭州电子科技大学通信工程学院

出　　处：《电路与系统学报》2010年第2期22-26,共5页Journal of Circuits and Systems

基　　金：国家自然科学基金项目(60872092);浙江省自然科学基金项目(Y106839)

摘　　要：为解决传统恒模波束形成算法在受冲击噪声污染的无线环境中的性能退化问题,本文提出基于分数低阶统计量的线性约束恒模盲自适应波束形成方法,并从理论上分析了算法收敛条件。仿真实验表明,在稳定分布噪声下,新方法具有比传统恒模波束形成方法更好的韧性,而且比线性约束最小平均P范数波束形成方法具有更高的输出信干噪比,即使在强脉冲干扰环境下新方法仍具有较好的信号恢复能力。In order to solve the problem of performance degradation of the conventional constant modulus beamforming algorithm in wireless environment with impulsive noise nature, this paper proposes a linearly constrained constant modulus （FLOS-LCCM） approach based on fractional lower-order statistics for blind adaptive beamforming. The convergence condition is analyzed theoretically. Simulation results indicate that the proposed approach is robust and has the higher signal to interference and noise ratio than the linearly constrained least mean p-norm algorithm. It has the good performance of signal recovery even under a severe impulsive ambient noise.

关 键 词：Α稳定分布 波束形成 分数低阶统计量 恒模算法 最小平均P范数 

分 类 号：TN911.7[电子电信—通信与信息系统]