Xidong Mu

TL;DR: A comprehensive overview of the state-of-the-art on RISs, with focus on their operating principles, performance evaluation, beamforming design and resource management, applications of machine learning to RIS-enhanced wireless networks, as well as the integration of RISs with other emerging technologies.

TL;DR: In this article, a downlink multiple-input single-output intelligent reflecting surface (IRS) aided non-orthogonal multiple access (NOMA) system is investigated, where a base station (BS) serves multiple users with the aid of RISs.

TL;DR: A comprehensive overview of the state-of-the-art on RISs, with focus on their operating principles, performance evaluation, beamforming design and resource management, applications of machine learning to RIS-enhanced wireless networks, as well as the integration of RISs with other emerging technologies is provided in this article.

TL;DR: In this article, three practical operating protocols for simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surfaces (RISs) are investigated, where the incident wireless signal is divided into transmitted and reflected signals passing into both sides of the space surrounding the surface, thus facilitating a fullspace manipulation of signal propagation.

TL;DR: In this paper, a novel simultaneously transmitting and reflecting (STAR) system design relying on reconfigurable intelligent surfaces (RISs) is conceived, and three practical protocols are proposed for their operation, namely energy splitting, mode switching, and time switching.