Maximization of sum rate for Wireless Powered Communication Network with Intelligent Reflecting Surface and NOMA in the nonappearance of uplink and downlink beamforming matrix, subject to transmit power and time. - Affum Emmanuel Ampoma; Samuel Tweneboah-Koduah 002; Michael Kubi Appiah; Eric Gyamfi; Sunday Adeola Ajagbe; Owusu Agyeman Antwi; Matthew Adigun (Int. J. Commun. Syst., 2024)