1. Electrical Engineering Department, Federal University of Ceara, Fortaleza 60020-181, Brazil
2. Engineering, Modeling & Applied Social Sciences Center, Federal University of ABC, Santo Andre 09210-580, Brazil
3. SERCOM Laboratory, Tunisia Polytechnic School, Carthage University, Carthage 1054, Tunisia
4. Universite Polytechnique Hauts-de-France, Universite Lille, and INSA Hauts-de-France, 59313 Valenciennes, France
5. School of Interdisciplinary Mathematical Sciences, Meiji University, Tokyo 101-8301, Japan
6. Department of Electronic Engineering, Royal Holloway, University of London, London WC1B 5DN, UK
7. Faculty of Engineering, University of Strathclyde, Glasgow G1 1XJ, UK
8. Communications and Signal Processing Laboratory, Telecommunication Research Institute, University of Malaga, 29010 Malaga, Spain
9. Department of Communications Engineering, University of Malaga, 29010 Malaga, Spain