SPECTRUM SENSING AND COOPERATIVE RELAYING IN COGNITIVE RADIO SYSTEMS: A SURVEY. Global Journal of Advanced Engineering Technologies and Sciences, [S. l.], v. 5, n. 4, p. 6–9, 2018. Disponível em: https://gjaets.com/index.php/gjaets/article/view/80.. Acesso em: 16 jul. 2024.