16-QAM Modulation Based on Quad-Parallel Mach-Zehnder Modulator Dedicated for Radio-over-Fiber System . International Journal of Information and Electronics Engineering, [S. l.], v. 3, n. 5, p. 502–505, 2013. Disponível em: https://ijiee.org/index.php/ijiee/article/view/734. Acesso em: 24 oct. 2026.