1. Institut National de la Recherche Scientifique-Energie, Matériaux et Télécommunications, 800 rue de la Gauchetière Ouest, Montréal, Québec, Canada
2. Department of Science and Technology, Linköping University, Bredgatan 34, SE-601, 74 Norrkoping, Sweden
3. Institute for Electronics Engineering, University of Erlangen-Nuremberg, Cauerstr. 9, 91058 Erlangen, Germany
4. Intelligent RF Radio Technology Laboratory (iRadio Lab), Department of Electrical and Computer Engineering, Schulich School of Engineering, University of Calgary, Calgary, AB, 91058 Erlangen, Canada T2N 1N4