Lifeng Lai received the B.E. and M. E. degrees in Information Science and Electrical Engineering from Zhejiang University, Hangzhou, China in 2001 and 2004 respectively, and the PhD degree in Electrical and Computer Engineering from the The Ohio State University at Columbus, OH, in 2007. He was a postdoctoral research associate at the Department of Electrical Engineering, Princeton University, working with Professor H. Vincent Poor from Sept. 2007 to Aug. 2009. He was a Distinguished University Fellow of the Ohio State University from 2004 to 2007. His current research interest includes Wireless Network Security, Statistic Analysis in Cognitive Radio Networks, Biometric Security Systems and Cooperative Communications. He co-authored a paper that received the Best Paper Award from IEEE Global Communications Conference, 2008.