1. Graduate Program in Electrical and Computer Engineering, Federal University of Technology—Paraná (UTFPR), Curitiba, Brazil
2. Centre for Wireless Communications (CWC), University of Oulu, Oulu, Finland
3. Departament of Electrical and Electronics Engineering, Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
4. Department of Electrical Engineering, Federal University of Paraná (UFPR), Curitiba, Brazil