Sparse DFT Based Channel Estimation In OFDM Systems. Iraqi Journal of Information and Communication Technology, [S. l.], v. 3, n. 2, p. 1–10, 2020. DOI: 10.31987/ijict.3.2.89. Disponível em: https://www.ijict.edu.iq/index.php/ijict/article/view/89. Acesso em: 21 apr. 2026.