中文摘要：

XU Guozhen, received the B.S. degree in electronics engineering from Dalian University of Technology, China, in 2010. He is currently working towards the Ph.D. degree in the State Key Laboratory of Advanced Optical Communication Systems ＆ Networks, School of EECS, Peking University. His research interests include energy efficient network and massive MIMO. LIU An, received the B.S. and Ph.D. degrees in electronics engineering from Peking University, China, in 2004 and 2011. From 2008 to 2010, he was a visiting scholar at the Department of Electrical, Computer, and Energy Engineering, University of Colorado at Boulder. He is currently doing his post-doctor felIowship at Hong Kong University of Science and Technology. His research interests include wireless communication and information theory. JIANG Wei. received the B.S. and Ph.D. degrees in electronics engineering from Peking University in 1997 and 2003, respectively. Currently, he is an Associate Professor of the School of Electronics Engineering and Computer Science, Peking University. His research interests include communication algorithms, multiple antenna technologies and satellite commu- nications. Corresponding author： Wei Jiang; E-mail： jiangwei@pku.edu.cn XIANG Hoige, graduated from department radio-electronics in Peking University in 1964. He began work in Peking University. He is currently a Professor of the School of Electronics Engineering and Computer Science in Peking University. His research fields are digital communication and signal processing, such as wireless and satellite communication networks, multi-user detections and interference cancellation, multiple carrier communications and OFDM systems, smart antenna and MIMO systems, and channel code technique. I.UO Wu, received the B.S., M.S., and Ph.D. degrees in electronics engineering from Peking University in 1991, 1998, and 2006, respectively. Currently, he is a Professor of the School of Electronics Engineering and Computer Science, Peking University. His re- search interests inclu