1. 5G Wireless Research Group, Lenovo Deutschland GmbH, Stuttgart, Germany
2. Communications and Information Theory Chair, Technische Universität Berlin, Berlin, Germany
3. Department of Computer Science and Electrical Engineering, Jacobs University Bremen, Bremen, Germany
4. Ofinno Technologies, Herndon, VA, USA
5. Institute for Theoretical Information Technology (TI), RWTH Aachen University, Aachen, Germany