1. State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China
2. Department of Wireless and Device Technology Research, China Mobile Research Institute, Beijing, China
3. Algorithm Department and State Key Laboratory of Mobile Network and Multimedia Technology, ZTE Corporation Ltd., Shenzhen, China
4. Ericsson Research, Ericsson AB, Stockholm, Sweden
5. Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, Berlin, Germany
6. Wireless Technology Division, CEA-LETI, Grenoble, France
7. Automotive Engineering Laboratory, Huawei Munich Research Center, Munich, Germany