Holographic MIMO communications: Theoretical foundations, enabling technologies, and future directions

T Gong, P Gavriilidis, R Ji, C Huang… - … Surveys & Tutorials, 2023 - ieeexplore.ieee.org
Future wireless systems are envisioned to create an endogenously holography-capable,
intelligent, and programmable radio propagation environment, that will offer unprecedented …

Five facets of 6G: Research challenges and opportunities

LH Shen, KT Feng, L Hanzo - ACM Computing Surveys, 2023 - dl.acm.org
While the fifth-generation systems are being rolled out across the globe, researchers have
turned their attention to the exploration of radical next-generation solutions. At this early …

Optimizing age of information through aerial reconfigurable intelligent surfaces: A deep reinforcement learning approach

M Samir, M Elhattab, C Assi… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
We investigate the benefits of integrating unmanned aerial vehicles (UAVs) with
reconfigurable intelligent surface (RIS) elements to passively relay information sampled by …

RIS-assisted joint transmission in a two-cell downlink NOMA cellular system

M Elhattab, MA Arfaoui, C Assi… - IEEE Journal on …, 2022 - ieeexplore.ieee.org
This paper investigates the integration of reconfigurable intelligent surface (RIS) with
downlink non-orthogonal-multiple-access (NOMA) in a multi-user two-cell network assisted …

Joint resource allocation and phase shift optimization for RIS-aided eMBB/URLLC traffic multiplexing

M Almekhlafi, MA Arfaoui, M Elhattab… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
This paper studies the coexistence of enhanced mobile broadband (eMBB) and ultra-
reliable and low-latency communication (URLLC) services in a cellular network that is …

RIS-assisted full-duplex relay systems

S Arzykulov, G Nauryzbayev, A Celik… - IEEE Systems …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) have recently been presented as a revolutionary
technique and recognized as one of the candidates for beyond fifth-generation wireless …

RIS-assisted UAV for timely data collection in IoT networks

A Al-Hilo, M Samir, M Elhattab, C Assi… - IEEE Systems …, 2022 - ieeexplore.ieee.org
Intelligent transportation systems are thriving thanks to a wide range of technological
advances, namely 5G communications, the Internet of Things (IoT), artificial intelligence, and …

Deep reinforcement learning for optimizing RIS-assisted HD-FD wireless systems

A Faisal, I Al-Nahhal, OA Dobre… - IEEE Communications …, 2021 - ieeexplore.ieee.org
This letter investigates the reconfigurable intelligent surface (RIS)-assisted multiple-input
single-output (MISO) wireless system, where both half-duplex (HD) and full-duplex (FD) …

Energy consumption optimization in RIS-assisted cooperative RSMA cellular networks

S Khisa, M Elhattab, C Assi… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This paper presents a downlink reconfigurable intelligent surface (RIS)-assisted half-duplex
(HD) cooperative rate-splitting multiple access (C-RSMA) networks. The proposed system …

STAR-RIS assisted downlink active and uplink backscatter communications with NOMA

A Huang, X Mu, L Guo - IEEE Transactions on Vehicular …, 2023 - ieeexplore.ieee.org
A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)
assisted downlink (DL) active and uplink (UL) backscatter communication (BackCom) …