电子学报Issue(10)：2028-2033,6.DOI:10.3969/j.issn.0372-2112.2015.10.022
基于 EM算法的宽带信号 DOA 估计及盲分离
Broadband DOA Estimation and Blind Source Separation Based on EM Algorithm
摘要
Abstract
Based on the expectation-maximization (EM)algorithm,a new method for broadband direction of arrival (DOA) estimation and blind source separation is presented in this paper.First,we establish a likelihood function in the frequency domain by jointly using all frequencies information.Then,based on this function,the E-step and M-step in the frame of broadband EM algo-rithm are derived.Finally,we jointly estimate DOAs and sources through EM iteration compute.Moreover,through analyses the con-vergence of EM algorithm,we set adapted angle search space for DOA estimation,which reduce the computations of our algorithm. Compare to the traditional method,more effective information are applied in our algorithm.Therefore,the proposed algorithm has more advantages for DOA estimation and source separation.Simulation results demonstrate our algorithm is effective.关键词
宽带信号/EM算法/DOA 估计/信号分离Key words
broadband signal/EM algorithm/DOA estimation/source separation分类
信息技术与安全科学引用本文复制引用
熊坤来,刘章孟,柳征,姜文利,汪华兴..基于 EM算法的宽带信号 DOA 估计及盲分离[J].电子学报,2015,(10):2028-2033,6.基金项目
国家自然科学基金 （）
