1984, 1989 and 1992 obtained the bachelor's degree, master's degree and doctor's degree respectively. 1992- 1994 engaged in postdoctoral research in Beijing University of Posts and Telecommunications, 1994 was promoted to professor after leaving school, 1995- 1997 worked in Carleton University, Canada, 1997 has been engaged in wireless communication and electromagnetic compatibility in Beijing University of Posts and Telecommunications so far.