School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
Chuan Heng Foh
Centre for Communication System Research, Department of Electronic Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
Hai Vu
Faculty of Information & Communication Technologies, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
Guowang Miao
KTH, The Royal Institute of Technology, 100 44 Stockholm, Sweden
