Department of Computer and Electronic Information Guangxi University Nanning 530004 China;
The Guangxi Key Laboratory of Multimedia Communications and Network Technology Nanning 530004 China;
School of Computer Science and Engineering Guilin University of Aerospace Technology Guilin 541004 China;
Department of Computer and Electronic Information Guangxi University Nanning 530004 China;
Department of Computer and Electronic Information Guangxi University Nanning 530004 China;
Department of Computer and Electronic Information Guangxi University Nanning 530004 China;
Department of Computer and Electronic Information Guangxi University Nanning 530004 China;
Department of Electrical Engineering Guangxi University Nanning 530004 China;
