Prof. Guiyun Liu was born in Hunan Province, China, in 1983. He received his BSc degree from Qinghai University, Xining, China, in 2006, and his PhD degree from South China University of Technology, Guangzhou, China, in 2012. After that, he joined the School of Mechanical and Electric Engineering, Guangzhou University, China, where he is an Associate Professor. His research interests lie in energy-efficient wireless communications.