中文摘要：

Cao Zhigang, graduated with golden medal from the Department of Radio Electronics at Tsinghua University, Beijing, China in 1962. He was a visiting scholar at Stanford University from 1984 to 1986. Since 1962, He has been with Tsinghua University, where he is currently a professor of Electronic Engineering Department. His current research interests include mobile and satellite communications. Wang Jianyu, received his B.S. degree in Electronic Engineering from Tsinghua University, Beijing, China, in 2011. He is now a Ph.D. student in UCLA, CA, USA. His research interests are in the area of wireless communications. Liu Juan, received her B.S. degree in Information and Electronic Engineering from Zhejiang University, Hangzhou, China, in 21300. She received her M.S degree in Information Engineering from Beijing University of Posts and Telecorrmmications, Beijing China, in 2005. She received her PhD degree in the Department of Electronic Engineering, Tsinghua University, Beijing, China, in 2011. Her research interest is in wireless cornnmications. Wang Xijun, received his B.S. degrees （with highest honors） in Department of Conmmnication Engineering from Xidian University in 2005, Xi＇an, Shaanxi China. He also obtained the honor of ＂Outstanding Oaduates of Shaanxi Province.＂He is currently working toward the Ph.D. degree with the Department of Electronic Engineering, Tsinghua University, Beijing, China. His research interests include wireless conmaunications and coding. The corresponding author. Email： xjwang22 @ groail.com Chen Wei, received his B.S. and Ph.D. degrees in Electronic Engineering （both with the highest honors） from Tsinghua University, Beijing, China, in 2002, and 2007, respectively. Since July 2007, he has been with Department of Electronic Engi-neering, Tsinghua University, where he is currently an Associate Professor and the Vice Director of institute of communications. His research interests are in the broad areas of wireless connmnications, information theory and applied optirni