Hybrid Active-Passive RIS Transmitter Enabled Energy-Efficient Multi-User Communications - Huang, Ao; Mu, Xidong; Guo, Li; Zhu, Guangyu (IEEE transactions on wireless communications, 2024)
Keywords: Algorithms; Antennas; Array signal processing; Beamforming; Communications systems; Complexity; Downlink; Energy efficiency; energy-efficient design; hybrid reconfigurable intelligent surface; Mixed integer; mixed-integer nonlinear programming; Multi-user communication; Nonlinear programming; Optimization; Radio transmitters; Reconfigurable intelligent surfaces; Resource management; RIS element scheduling; Transmitters; Transmitting antennas; Wireless communication