Tian Jifeng was born in 1976. He received his B. S. and M. S. degrees in electronic engineering from Harbin Engineering University in 1999 and 2001, respectively. He is currently working toward the Ph.D. degree in Electronic Engineering at Shanghai Jiaotong University. His research interests include MIMO technique, OFDM technique and B3G mobile communication systems. E-mail: jftian @ vip. Sina.com.