1. School of System Design and Intelligent Manufacturing, Southern University of Science and Technology, Shenzhen, China
2. Department of Electronic and Electrical Engineering, University College London, London, U.K.
3. Department of Electrical and Computer Engineering, Memorial University, St. John’s, NL, Canada
4. Department of Communication Engineering, Beijing University of Posts and Telecommunications, Beijing, China
5. Mobile Communications Systems, Technische Universität Dresden, Dresden, Germany
6. Huawei Technologies Company Ltd., Ottawa, ON, Canada