Affiliation: | 1.Post-graduation Program in Computer Engineering and Systems (PECS), State University of Maranh?o (UEMA), S?o Luís, MA, CEP: 65055-970, Brazil ;2.Electrical Engineering Department, Federal University of Campina Grande (UFCG), Campina Grande, PB, CEP: 58429-140, Brazil ;3.Group of Telecommunications and Applied Electromagnetism, Federal Institute of Paraiba (IFPB), Av. Primeiro de Maio, 720, Jaguaribe, Jo?o Pessoa, PB, CEP: 58015-905, Brazil ; |