一种联合角度时延估计新方法  

New method for joint DO A-delay estimation

作　　者：刘福来[1] 汪晋宽[2] 顾德英[2] 于戈[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004 [2]东北大学秦皇岛分校,河北秦皇岛066004

出　　处：《辽宁工程技术大学学报（自然科学版）》2005年第6期867-869,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：教育部科学技术研究重点项目(02085)

摘　　要：为了实现DOA和时延的联合估计,提出了一个无线通信中高分辨率的联合角度和时延估计方法,该方法不需要对参数进行搜索,利用空时矩阵的特征向量和特征值分别估计DOA和时延,通过特征值和特征向量的对应关系,估计的参数可以自动实现配对, 只要各路径信号的DOA和时延不同时接近此方法都可以适用,与JADE-MUSIC,JADE-ESPRIT和SI-JADE算法相比,该算法具有较好的鲁棒性和较小的估计误差。仿真结果证明了该算法的有效性。A novel method is presented to jointly estimate the directions of arrival （DOAs） and the propagation delays of multipath signals in wireless communications. The proposed method makes use of the eigenvectors of the space-time matrix to estimate DOAs and the eigenvalues of the space-time matrix to estimate delays, respectively. At the same time, the estimated DOAs and delays are automatically determined by the relationship between the eigenvalue and the eigenvector. Compared with the previous work, the proposed method can provide better performance with substantially reduced computational complexity. Simulation results show the effectiveness of the space-time matrix method.

关 键 词：空时二维处理 联合估计 DOA 时延 

分 类 号：TN911.7[电子电信—通信与信息系统]