基于相关熵的稳健型ESPRIT算法  

Robust ESPRIT algorithm based on correntropy

作　　者：赵季红[1,2] 贺丹[1] 王伟华[2] 曲桦[2] 雷佩 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710061 [2]西安交通大学电子信息学院,陕西西安710049

出　　处：《计算机工程与设计》2016年第2期438-442,共5页Computer Engineering and Design

基　　金：国家863高技术研究发展计划基金项目(2014AA01A706;2014AA01A707);国家自然科学基金项目(61371087);新一代宽带无线移动通信国家重大专项基金项目(2013ZX0302010-003)

摘　　要：为解决旋转不变子空间(estimation of signal parameters by rotational invariance techniques,ESPRIT)算法在冲击噪声环境下来波方向(direction of arrival,DOA)估计不稳健的问题,提出基于相关熵(correntropy)的稳健型ESPRIT算法,进行DOA估计。利用相关熵在冲击噪声环境下具有鲁棒性的优点,与ESPRIT算法相结合,在冲击噪声环境下进行DOA估计。仿真结果表明,与基于分数低阶统计(fractional lower order statistics,FLOS)算法相比,该算法优势在高冲击噪声环境中尤其明显。To solve the problem that ESPRIT algorithm is accurate for DOA in the impulsive noise environment,a method for DOA estimation based on ESPRIT was introduced.The robust statistics advantages of correntropy were used,the correntropy based correlation was proposed.It could be applied with ESPRIT to estimating DOAs in the presence of symmetric alpha-stable noise.Simulation results show that CRCO-ESPRIT outperforms the existing FLOS based ESPRIT algorithms especially in highly impulsive noise environments or in low generalized signal-to-noise ratio（GSNR）situations.

关 键 词：相关熵 方向估计 冲击噪声 分数低阶统计 旋转不变子空间 

分 类 号：TN911[电子电信—通信与信息系统]