作者机构:[1]School of Information Science & Technology, Southwest Jiaotong University, Chengdu 610031, China, [2]School of Information Technology & Engineering, George Mason University, VA 22030, USA, [3]School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
相关基金:This work was supported by the National Natural Science Foundation of China (60672099).