1. ELEDIA@AUTH, School of Physics, Aristotle University of Thessaloniki,Thessaloniki,Greece
2. University of Western Macedonia,Department of Informatics and Telecommunications Engineering,Kozani,Greece
3. Aristotle University of Thessaloniki,Department of Electrical and Computer Engineering,Thessaloniki,Greece
4. International Hellenic University,Dept. of Information and Electronic Eng.,Sindos,Greece
5. The University of New Mexico,Department of Engineering and Computing,USA
6. Bharath University,Department of Electronics and Communication Engineering,Chennai,Tamilnadu,India