Reconfigurable intelligent surface (RIS) technique is effective to improve the capacity and
coverage of various networks. However, the practical RIS has dissimilar responses to …

Due to the possibility of blockage during communication, the communication quality may be
poor. Therefore, Reconfigurable Intelligent Surface (RIS) technology can effectively solve …

In this paper, we study the reconfigurable intelligent surface (RIS) based downlink multi-user
system where a multi-antenna base station (BS) sends signals to various users assisted by …

Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs)
have been attracting significant attention in both academia and industry for their advantages …

Reconfigurable intelligent surfaces (RISs) have drawn considerable attention due to their
ability to direct electromagnetic waves into desirable directions. Although RISs share some …

Reconfigurable intelligent surface (RIS) provides a promising way to build programmable
wireless transmission environments. Owing to the massive number of controllable reflecting …

We consider in this letter the performance of reconfigurable intelligent surface (RIS)-aided
wireless networks over Rician fading channels. We derive new accurate closed-form …

Reconfigurable intelligent surface (RIS) is a revolutionizing technology to achieve cost-
effective communications. The active beamforming at the base station (BS) and the discrete …

The joint uplink/downlink (JUD) design of simultaneously transmitting and reflecting
reconfigurable intelligent surfaces (STAR-RIS) is conceived in support of both uplink (UL) …

Reconfigurable intelligent surfaces have emerged as a promising technology for future
wireless networks. Given that a large number of reflecting elements is typically used and that …