His research interests are sensor networks, wireless networks, network security, and their applications in biomedicine. His research has been supported by the U.S. National Science Foundation, Cisco, Sprint, and other sources. He obtained his Ph.D. degrees at Tongji University (Shanghai) in the field of signal processing (in 1999), and at Clarkson University (New York) in the field of electrical and computer engineering (in 2002). He obtained his M.S. and B.S. degrees in telecommunication engineering from Shanghai Tiedao University in 1996 and 1993, respectively. He has published over 100 journal/conference papers and book (chapters).