[1] National Technical University of Athens (NTUA),Wireless and Satellite Communications Group, School of Electrical and Computer Engineering
[2] St. Petersburg Institute for Informatics and Automation of Russian Academy of Sciences (SPIIRAS),Department of Communications Engineering
[3] Tampere University of Technology (TUT),Network Management & Optimal Design Lab, School of Electrical and Computer Engineering
[4] National Technical University of Athens (NTUA),undefined