Comparison of 4 transmit antennas OFDM-STBC Systems based on channel feedback . Journal of Pure & Applied Sciences , [S. l.], v. 18, n. 4, 2019. DOI: 10.51984/jopas.v18i4.506. Disponível em: https://sebhau.edu.ly/journal/jopas/article/view/506. Acesso em: 20 jan. 2026.