Guoru Ding is a postdoctoral researcher at the National Mobile Communications Research Laboratory, Southeast University, Nanjing, China, with Prof. Xiqi Gao. His research interests include Massive MIMO, Cognitive Radio Networks, Wireless Data Security, and Big Spectrum Data Analytics over Wireless Networks.<br>    He received his B.S. degree in electrical engineering from Xidian University, Xi’an, China, in 2008 and his Ph.D. degree in communications and information systems in College of Communications Engineering, Nanjing, China, in 2014. He currently serves as a Guest Editor for IEEE Jounral on Selected Areas in Communications and an Associated Editor of KSII Transactions on Internet and Information Systems. He was a recipient of Best Paper Awards from IEEE VTC2014-Fall and IEEE WCSP 2009. He is a IEEE Senior Member and a ACM/CIE/CCF member. He is also a voting member and the Technical Editor of IEEE 1900.6 Standard Association Working Group. He was voted as the Secretary of IEEE 1900.6 Standard Association Working Group in 2015.