Hybrid Active-Passive RIS Transmitter Enabled Energy-Efficient Multi-User Communications

• Published in: IEEE transactions on wireless communications Vol. 23; no. 9; pp. 10653 - 10666
• Main Authors: Huang, Ao, Mu, Xidong, Guo, Li, Zhu, Guangyu
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.09.2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 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

A novel hybrid active-passive reconfigurable intelligent surface (RIS) transmitter enabled downlink multi-user communication system is investigated. Specifically, RISs are exploited to serve as transmitter antennas, where each element can flexibly switch between active and passive modes to deliver i...