基于扩展子空间传播算子的时延与角度联合估计  

Joint Delay and Angle Estimation Based on Propagator Method of the Extended Subspace

作　　者：李海文[1,2] 陈松 任修坤[1] 张靖志[1] LI Haiwen;CHEN Song;REN Xiukun;ZHANG Jingzhi(Information Engineering University,Zhengzhou 450001,China;Army Engineering University,Chongqing 400035,China)

机构地区：[1]信息工程大学,河南郑州450001 [2]陆军工程大学,重庆400035

出　　处：《信息工程大学学报》2019年第1期1-6,共6页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(61401513);国家科技重大专项资助项目(2013ZX03006003-006)

摘　　要：提出一种基于扩展子空间传播算子的时延与角度联合估计算法,算法首先对信道频域响应维度进行扩展,然后采用传播算子方法估计出信号的扩展噪声子空间并构造谱函数,最后通过二维谱峰搜索实现时延和角度参数的联合估计,且参数自动配对。算法有效降低了计算复杂度,且能实现多径数大于阵元数条件下的参数高精度估计。仿真验证了算法的有效性和可行性。A joint delay and angle estimation based on propagator method of the extended subspace is presented. Firstly, the algorithm extends the dimension of the channel frequency domain response vector;then the propagator method is used to estimate the extended noise subspace of the received signal, and the spectral function is constructed. Finally, the joint estimation of delay and angle parameters is realized by two-dimensional spectral peak search, and the parameters are automatically paired. The algorithm not only effectively reduces the computational complexity, but also accomplishes the high precision estimation when the number of paths exceeds the number of antennas. The validity and feasibility of the proposed algorithm are verified by simulation.

关 键 词：扩展子空间 传播算子 时延 到达角度 

分 类 号：TN911.7[电子电信—通信与信息系统]