1. Northeastern University at Qinhuangdao,Sydney Smart Technology College,Department of Communication Engineering,Qinhuangdao,China,066004
2. Northeastern University at Qinhuangdao,School of Mathematics and Statistics,Qinhuangdao,China,066004
3. Guilin University of Electronic Technology,School of Information and Communication,Guilin,China,541004
4. Eighth Geological Brigade of Hebei Bureau of Geology and Mineral Resources Exploration,Qinhuangdao,China,066004