1. School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia
2. National Mobile Communications Research Laboratory, Southeast University, Nanjing, China
3. School of Electronics, Electrical Engineering and Computer Science, Queen’s University Belfast, Belfast, U.K
4. Information Systems Technology Design Pillar, Singapore University of Technology and Design, Tampines, Singapore
5. Department of Electrical, Electronics, and Communication Engineering (EEI),, Friedrich-Alexander University of Erlangen-Nuremberg, Erlangen, Germany
6. Nokia Bell Labs, Sunnyvale, CA, USA
7. Huawei Technologies Canada Company Ltd., Ottawa, ON, Canada