Exploiting active RIS in NOMA networks with hardware impairments

X Yue, M Song, C Ouyang, Y Liu, T Li… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Active reconfigurable intelligent surface (ARIS) is a promising way to compensate for
multiplicative fading attenuation by amplifying and reflecting event signals to selected users …

Transmit power minimization for STAR-RIS-empowered uplink NOMA system

H Ma, H Wang, H Li, Y Feng - IEEE Wireless Communications …, 2022 - ieeexplore.ieee.org
Different from conventional reconfigurable intelligent surface, simultaneously transmitting
and reflecting reconfigurable intelligent surface (STAR-RIS) can provide service for the …

Ris-assisted cooperative NOMA with SWIPT

J Ren, X Lei, Z Peng, X Tang… - IEEE Wireless …, 2022 - ieeexplore.ieee.org
This letter proposes a two-stage reconfigurable intelligent surface (RIS)-assisted
transmission scheme for cooperative non-orthogonal multiple access networks with …

Multiuser NOMA with multiple reconfigurable intelligent surfaces for backscatter communication in a symbiotic cognitive radio network

DKP Asiedu, JH Yun - IEEE Transactions on Vehicular …, 2022 - ieeexplore.ieee.org
In this paper, we develop an optimization framework for the symbiotic operation of a
multiuser cognitive radio network (CRN) consisting of a non-orthogonal multiple access …

Two-timescale synchronization and migration for digital twin networks: A multi-agent deep reinforcement learning approach

W Liu, Y Fu, YGFL Wang, W Sun… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Digital twins (DTs) have emerged as a promising enabler for representing the real-time
states of physical worlds and realizing self-sustaining systems. In practice, DTs of physical …

Joint active and passive beamforming optimization for multi-IRS-assisted wireless communication systems: A covariance matrix adaptation evolution strategy

T Yin, L Li, W Lin, H Hu, D Ma, J Liang… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Intelligent reflecting surface (IRS) is applied in 5G and 6G to improve communication
performance by reconfiguring signal propagation environments while maintaining low …

Channel aging-aware precoding for RIS-aided multi-user communications

Y Zhang, J Zhang, H Xiao, DWK Ng… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surfaces (RISs) have received intensive attention for their
outstanding potential of reconstructing wireless propagation channels to significantly …

Performance analysis of STAR-RIS assisted secure cognitive NOMA-HARQ networks

X Sheng, X Li, G Chen, G Huang… - IEEE Wireless …, 2023 - ieeexplore.ieee.org
In this letter, we carry out the performance analysis of the simultaneously transmitting and
reflecting reconfigurable intelligent surface (STAR-RIS) in the hybrid automatic repeat …

Robust transmit and reflect beamforming design for IRS-assisted Offshore NOMA communication systems

K Li, M Cui, G Zhang, Q Wu, D Li… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
We consider a non-orthogonal multiple access (NOMA) offshore communication system,
where an intelligent reflecting surface (IRS) is deployed to assist the communication from a …

Outage performance and AoI minimization of HARQ-IR-RIS aided IoT networks

Z Shi, H Wang, Y Fu, X Ye, G Yang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
In this paper, reconfigurable intelligent surface (RIS) and hybrid automatic repeat request
with incremental redundancy (HARQ-IR) are amalgamated to lower power expenditure …