Reconfigurable intelligent surfaces for wireless communications: Overview of hardware designs, channel models, and estimation techniques

M Jian, GC Alexandropoulos, E Basar… - Intelligent and …, 2022 - ieeexplore.ieee.org
The demanding objectives for the future sixth generation (6G) of wireless communication
networks have spurred recent research efforts on novel materials and radio-frequency front …

A tutorial on decoding techniques of sparse code multiple access

S Chaturvedi, Z Liu, VA Bohara, A Srivastava… - IEEE …, 2022 - ieeexplore.ieee.org
Sparse Code Multiple Access (SCMA) is a disruptive code-domain non-orthogonal multiple
access (NOMA) scheme to enable future massive machine-type communication networks …

A state-of-the-art survey on reconfigurable intelligent surface-assisted non-orthogonal multiple access networks

Z Ding, L Lv, F Fang, OA Dobre… - Proceedings of the …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) and nonorthogonal multiple access (NOMA) have
been recognized as key enabling techniques for the envisioned sixth generation (6G) of …

Deep-learning channel estimation for IRS-assisted integrated sensing and communication system

Y Liu, I Al-Nahhal, OA Dobre… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Integrated sensing and communication (ISAC), and intelligent reflecting surface (IRS) are
envisioned as revolutionary technologies to enhance spectral and energy efficiencies for …

Sparse code multiple access: Potentials and challenges

M Rebhi, K Hassan, K Raoof… - IEEE Open Journal of the …, 2021 - ieeexplore.ieee.org
The massive connectivity is among other unprecedented requirements which are expected
to be satisfied in order to follow the perpetual increase of connected devices in the era of …

Design of a power amplifying-RIS for free-space optical communication systems

AR Ndjiongue, TMN Ngatched… - IEEE Wireless …, 2021 - ieeexplore.ieee.org
The steering dynamics of reconfigurable intelligent surfaces (RISs) have hoisted them to the
front row of technologies that can be exploited to solve skip-zones in wireless …

Modeling RIS empowered outdoor-to-indoor communication in mmWave cellular networks

M Nemati, B Maham, SR Pokhrel… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
With the increasing adoption of millimeter-waves (mmWave) over cellular networks, outdoor-
to-indoor (O2I) communication has been one of the challenging research problems due to …

Deep reinforcement learning for RIS-assisted FD systems: Single or distributed RIS?

A Faisal, I Al-Nahhal, OA Dobre… - IEEE Communications …, 2022 - ieeexplore.ieee.org
This letter investigates reconfigurable intelligent surface (RIS)-assisted full-duplex multiple-
input single-output wireless system, where the beamforming and RIS phase shifts are …

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) …

Reconfigurable intelligent surface optimization for uplink sparse code multiple access

I Al-Nahhal, OA Dobre, E Basar… - IEEE …, 2021 - ieeexplore.ieee.org
The reconfigurable intelligent surface (RIS)-assisted sparse code multiple access (RIS-
SCMA) is an attractive scheme for future wireless networks. In this letter, for the first time, the …