1. Department of Electrical and Computer Engineering, Villanova University, Villanova, PA, USA
2. Ericsson Research, Ericsson AB, Stockholm, Sweden
3. Radio Systems Research, Nokia Bell Labs, Murray Hill, NJ, USA
4. School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia
5. Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg, Luxembourg City, Luxembourg
6. Department of ECE, Villanova University, Villanova, PA, USA
7. Department of Electronic Systems, Aalborg University, Aalborg, Denmark