Refracting RIS-Aided Hybrid Satellite-Terrestrial Relay Networks: Joint Beamforming Design and Optimization

• Published in: IEEE transactions on aerospace and electronic systems Vol. 58; no. 4; pp. 3717 - 3724
• Main Authors: Lin, Zhi, Niu, Hehao, An, Kang, Wang, Yong, Zheng, Gan, Chatzinotas, Symeon, Hu, Yihua
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Alternating optimization (AO); Array signal processing; Beamforming; Design optimization; Downlink; hybrid satellite-terrestrial relay networks (HSTRNs); joint beamforming; Linear antenna arrays; Mathematical analysis; Optimization; Penalty function; Phase shifters; Radio equipment; Reconfigurable intelligent surfaces; refracting RIS; Relay networks; Satellite antennas; Satellites; Singular value decomposition; Taylor series; User requirements; Vectors (mathematics)

Reconfigurable intelligent surface (RIS) has been viewed as a promising solution in constructing reconfigurable radio environment of the propagation channel and boosting the received signal power by smartly coordinating the passive elements' phase shifts at the RIS. Inspired by this emerging te...