To whom correspondence should be addressed. Gao Xinying, bom in 1981. She received her Ph. D degree in Wireless Technology Innovation Institute of Bei- jing University of Posts and Telecommunications in 2008. She also received her B.S. and M.S. degrees from Shan- dong University in 2002 and 2005 respectively. Her research interests include wideband MIMO channel measurements and modeling, spectrum allocation and interference analysis of IMT-Advanced system.E-mail: xinyinggao@gmail.com