1. Democritus University of Thrace,Department of Electrical and Computer Engineering,Xanthi,Greece
2. Imperial College London,Department of Electrical and Electronic Engineering,London,United Kingdom
3. Radio Systems Research, Nokia Bell Labs,Stuttgart,Germany
4. Sustainable Artificial Intelligence, Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA),Barcelona,Spain
5. IMT Atlantique, Inria,LS2N,Department of Automation, Production and Computer Sciences,Nantes,France