Energy Efficiency and Spectral Efficiency Tradeoff in RIS-Aided Multiuser MIMO Uplink Transmission

• Published in: IEEE transactions on signal processing Vol. 69; pp. 1407 - 1421
• Main Authors: You, Li, Xiong, Jiayuan, Ng, Derrick Wing Kwan, Yuen, Chau, Wang, Wenjin, Gao, Xiqi
• Format: Journal Article
• Language: English
• Published: New York IEEE 2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Beamforming; discrete phase shifts; Energy consumption; Energy conversion efficiency; Energy efficiency; intelligent reflecting surface (IRS); Iterative methods; Numerical methods; Optimization; partial channel state information (CSI); Phase shifters; Precoding; Radio waves; Reconfigurable intelligent surface (RIS); Reconfigurable intelligent surfaces; Resource management; Spectral efficiency; Tradeoffs; Wave propagation; Wireless communications

The emergence of reconfigurable intelligent surfaces (RISs) enables us to establish programmable radio wave propagation that caters for wireless communications, via employing low-cost passive reflecting units. This work studies the non-trivial tradeoff between energy efficiency (EE) and spectral eff...