SENTINELS OF SIGNAL SECURITY: FORTIFYING VOICE FREQUENCY TRANSMISSION IN 5G-COMPATIBLE MULTIUSER DOWNLINK MIMO NOMA WIRELESS COMMUNICATION SYSTEM . International journal of networks and security, [S. l.], v. 4, n. 01, p. 06–08, 2024. Disponível em: https://www.academicpublishers.org/journals/index.php/ijns/article/view/342.. Acesso em: 31 dec. 2025.