Channel Estimation for Mixed-Analog to Digital Converters Architecture in Massive MIMO Architecture Using Approximate Conjugate Gradient Pursuit Algorithm. Al-Nahrain Journal for Engineering Sciences, [S. l.], v. 28, n. 2, p. 296–303, 2025. DOI: 10.29194/NJES.28020296. Disponível em: https://nahje.journalpath.com/nahje/article/view/160. Acesso em: 12 apr. 2026.