中文摘要：

Xiangdong Jia, received the MS. degree in communication and information engineering from Anhui University, Hefei, China, in 2007, and the Ph.D. degree in communication and information engineering from the Nanjing University of Posts and Telecommunications, Nanjing, China, in 2012. He is currently with the College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China. His research interests include wireless communications, next generation network, co-operative communications, cognitive radio, and massive MIMO. In these areas, he has authored over 80 papers published in several journals and conference proceedings. He has also eight granted/pending patents. Mangang Xie, received the B.E. degree in computer science and technology from Lanzhou University of Technology, Lanzhou, China, in 2013. He is currently pursuing the M.S. degree with College of Computer Science and Engineering,Northwest Normal University of China. He was with China Mobile Communications Corporation from 2013 to 2015. His research interests include wireless network and communication, massive MIMO, energy harvesting, and heterogeneous networks. Meng Zhou, received the B.E. degree in computer science and technology from Henan Normal University, Xinxiang, China, in 2015. He is currently pursuing the M.S. degree with the College of Computer Science and Engineering, Northwest Normal University, Lanzhou, China. His current research interests mainly focus on massive MIMO, wireless physical layer security, full duplex communications, and energy harvesting. Hongbo Zhu, is currently with the Nanjing University of Posts and Telecommunications, Nanjing, China, as a Full Professor and a Doctoral Supervisor. His current research interests are in wireless communications and electromagnetic compatibility,sensor network technology, and broad-band wireless communications. Longxiang Yang, is currently with the College of Communications and information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China, as a