Recently, beyond diagonal reconfigurable intelligent surface (BD-RIS) has been proposed
to generalize conventional RIS. BD-RIS has a scattering matrix that is not restricted to being …

The concept of Smart Cities has been introduced as a way to benefit from the digitization of
various ecosystems at a city level. To support this concept, future communication networks …

Reconfigurable intelligent surfaces (RIS) can be crucial in next-generation communication
systems. However, designing the RIS phases according to the instantaneous channel state …

Reconfigurable intelligent surfaces (RIS) is a promising solution to build a programmable
wireless environment via steering the incident signal in fully customizable ways with …

Reconfigurable intelligent surfaces (RISs), also known as intelligent reflecting surfaces
(IRSs), or large intelligent surfaces (LISs), 1 have received significant attention for their …

Reconfigurable intelligent surfaces (RISs) have been recently considered as a promising
candidate for energy-efficient solutions in future wireless networks. Their dynamic and low …

The adoption of a reconfigurable intelligent surface (RIS) for downlink multi-user
communication from a multi-antenna base station is investigated in this paper. We develop …

We consider multi-antenna wireless systems aided by reconfigurable intelligent surfaces
(RIS). RIS presents a new physical layer technology for improving coverage and energy …

Reconfigurable intelligent surfaces (RISs) allow controlling the propagation environment in
wireless networks by tuning multiple reflecting elements. RISs have been traditionally …

Reconfigurable intelligent surface (RIS) as an emerging cost-effective technology can
enhance the spectral-and energy-efficiency of wireless networks. In this article, we consider …