Underdetermined Blind Source Separation of Adjacent Satellite Interference Based on Sparseness  

作　　者：Chengjie Li Lidong Zhu Zhongqiang Luo 

机构地区：[1]National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China [2]School of Automation & Information Engineering, Sichuan University of Science and Engineering

出　　处：《China Communications》2017年第4期140-149,共10页中国通信（英文版）

基　　金：supported by a grant from the national High Technology Research and development Program of China (863 Program) (No.2012AA01A502);National Natural Science Foundation of China (No.61179006);Science and Technology Support Program of Sichuan Province(No.2014GZX0004)

摘　　要：The problem of underdetermined blind source separation of adjacent satellite interference is proposed in this paper. Density Clustering algorithm(DC-algorithm) presented in this article is different from traditional methods. Sparseness representation has been applied in underdetermined blind signal source separation. However, some difficulties have not been considered, such as the number of sources is unknown or the mixed matrix is ill-conditioned. In order to find out the number of the mixed signals, Short Time Fourier Transform(STFT) is employed to segment received mixtures. Then, we formulate the blind source signal as cluster problem. Furthermore, we construct Cost Function Pair and Decision Coordinate System by using density clustering. At the end of this paper, we discuss the performance of the proposed method and verify the novel method based on several simulations. We verify the proposed method on numerical experiments with real signal transmission, which demonstrates the validity of the proposed method.The problem of underdetermined blind source separation of adjacent satellite interference is proposed in this paper. Density Clustering algorithm（DC-algorithm） presented in this article is different from traditional methods. Sparseness representation has been applied in underdetermined blind signal source separation. However, some difficulties have not been considered, such as the number of sources is unknown or the mixed matrix is ill-conditioned. In order to find out the number of the mixed signals, Short Time Fourier Transform（STFT） is employed to segment received mixtures. Then, we formulate the blind source signal as cluster problem. Furthermore, we construct Cost Function Pair and Decision Coordinate System by using density clustering. At the end of this paper, we discuss the performance of the proposed method and verify the novel method based on several simulations. We verify the proposed method on numerical experiments with real signal transmission, which demonstrates the validity of the proposed method.

关 键 词：adjacent satellite interference Short Time Fourier Transform Decision Coordinate System real signal transmission 

分 类 号：TN911.7[电子电信—通信与信息系统] TP368.1[电子电信—信息与通信工程]