摘要
Under dense urban fading environment, performance of joint multi-path parameter estimation method based on traditional point signal model degrades seriously. In this paper, a new space and time signal model based on multipath distribution function is given after new space and time manifold is reconstructed. Then joint spacetime signal subspace is obtained by converting acquired channel from time domain to frequency domain .Then space and time spectrum is formulated by the space sub-matrix and time sub-matrix taken out of joint space-time signal subspace, and parameters are estimated by searching the minimum eigenvalues of the space matrix and the time matrix. Lastly, A space and time parameters matching process is performed by using the orthogonal property between joint noise subspace and the space-time manifold. In contrast with tradition MUSIC, the algorithm we present here only need two 1- dimension searching and was not sensitive to different distribution function.
Under dense urban fading environment, performance of joint multi-path parameter estimation method based on traditional point signal model degrades seriously. In this paper, a new space and time signal model based on multipath distribution function is given after new space and time manifold is reconstructed. Then joint spacetime signal subspace is obtained by converting acquired channel from time domain to frequency domain .Then space and time spectrum is formulated by the space sub-matrix and time sub-matrix taken out of joint space-time signal subspace, and parameters are estimated by searching the minimum eigenvalues of the space matrix and the time matrix. Lastly, A space and time parameters matching process is performed by using the orthogonal property between joint noise subspace and the space-time manifold. In contrast with tradition MUSIC, the algorithm we present here only need two 1- dimension searching and was not sensitive to different distribution function.
基金
the National Natural Science Foundation of China (60372022).
作者简介
Qian Bin was born in 1973. He is working towards Ph.D. degree in College of Electronic Engineering, University of Electronic Science and Technology of China. His research interests include smart antenna and array signal processing. E-mail： qianbinuestc@sohu.comYang Wanlin was born in 1951. He is a professor and doctoral director supervisor in College of Electronic Engineering, University of Electronic Science and Technology of China. His interests include radar signal processing and radar imaging.Wan Qun was born in 1971. He is a professor and doctoral director supervisor in College of Electronic Engineering, University of Electronic Science and Technology of China. His interests include array signal processing, radar imaging and moving object orientation.
