Gang Cao received the BE degree in electrical engineering from Wuhan University of Technology, China, in 2005, and received his PhD degree in signal processing from Beijing Jiaotong University, China, in 2013, supervised by Prof. Yao Zhao. From 2010, Oct. to 2011, Apr., he visited the Dept. of EE in Nanyang Technological University, Singapore. Now he has joined the School of Computer Science in Communication University of China, Beijing, China.