Yibing Li was born in 1967. He received his B.S. degree from Harbin Ship Engineering Institute in 1989, and received his M.S. and Ph.D. degrees in College of Information and Communication Engineering, Harbin Engineering University in 1996 and 2003. respectively. He is currently working as a professor in College of Information and Communication Engineering, Harbin Engineering University. His main research interests are cognitive radio technology, wireless communication technology, image processing and information fusion the- ory. E-mail: liyibing @ hrbeu.edu.cn Rui Yang was born in 1984. She received her B.S. degree and M.S. degree in College of Information and Communication Engineering, Harbin Engineering University in 2007 and 2010, respectively. She is currently working towards the Ph.D. degree in College of Information and Communication Engineering, Harbin Engineering University. Her main research interests are the spectrum access and management in cognitive radio networks. E-mail: yangrui@ hrbeu.edu.cn Corresponding author.Fang Ye was born in 1980. She received her Ph.D. degree in communication and information system from Harbin Engineering University in 2006. She is currently working as an associate professor in College of Information and Communication Engineering, Harbin Engineering University. Her research interests include cognitive radio and ultra wideband wireless communication. E-mail: yefang@hrbeu.edu.cn Zhenguo Gao was born in 1976. He received his Ph.D. degree in computer system architecture from Harbin Institute of Technology in 2006. He is currently working as a professor in College of Automation at Harbin Engineering University. His research interests include cognitive wireless network and coding techniques for networks. E-mail: gag@hrbeu.edu.cn