[1] Dalian Univ Technol, Sch Informat & Commun Engn, Dalian, Peoples R China
[2] Beijing Inst Technol, Sch Informat & Elect, Beijing, Peoples R China
[3] Singapore Univ Technol & Design, Informat Syst Technol & Design Pillar, Singapore, Singapore
[4] Nanyang Technol Univ, Sch Comp Sci & Engn, Singapore, Singapore