ZHENG XIANG received the B.S. and M.S. degrees from Air Force Engineering University, Xi'an, China, in 1990 and 1993, respectively, and the Ph.D. degree in Xi’an Jiaotong University, Xi'an, China, in 2006. Since 2001, he has been a Faculty Member with the School of Telecommunications Engineering, Xidian University, where he is currently a Full Professor with the State Key Laboratory of Integrated Services Networks. His current research interests include signal procedureing technologies, self-organizing networks, and wireless sensor network.