, S. S. I. K. A. BER Performance Analysis of Frequency-Hopping and Direct-Sequencing Spread Spectrum for Cognitive Radio Networks. International Journal on Recent and Innovation Trends in Computing and Communication, [S. l.], v. 3, n. 5, p. 3175–3178, 2015. DOI: 10.17762/ijritcc.v3i5.4413. Disponível em: https://ijritcc.org/index.php/ijritcc/article/view/4413. Acesso em: 19 apr. 2024.