Reconfigurable intelligent surfaces (RISs) are regarded as a promising emerging hardware
technology to improve the spectrum and energy efficiency of wireless networks by artificially …

The multi-user Holographic Multiple-Input and Multiple-Output Surface (MU-HMIMOS)
paradigm, which is capable of realizing large continuous apertures with minimal power …

The reconfigurable intelligent surface (RIS) has been recognized as an essential enabling
technology for sixth-generation (6G) mobile communication networks. An RIS comprises a …

Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective
elements, is capable of enhancing the wireless propagation environment in a cellular …

This work examines the performance gain achieved by deploying an intelligent reflecting
surface (IRS) in covert communications. To this end, we formulate the joint design of the …

In this paper, we investigate the fundamental multiple access (MA) scheme in an active
intelligent reflecting surface (IRS) aided energy-constrained Internet-of-Things (IoT) system …

The emerging technology of reconfigurable intelligent surfaces (RISs) is provisioned as an
enabler of smart wireless environments, offering a highly scalable, low-cost, hardware …

Different from traditional reflection-only reconfigurable intelligent surfaces (RISs),
simultaneously transmitting and reflecting RISs (STAR-RISs) represent a novel technology …

Reconfigurable intelligent surfaces (RISs) offer an entirely new route to alter the propagation
properties of electromagnetic waves and thus control their reflection, refraction, and …

With the increasing demand of high data rate and massive access in both ultra-dense and
industrial Internet-of-things networks, spectral efficiency (SE) and energy efficiency (EE) are …