Near Field Optimization Algorithm for Reconfigurable Intelligent Surface
, 2023 Reconfigurable intelligent surface (RIS) is a type of wireless communication technology that uses a reconfigurable surface, such as a wall or building that is able to adjust its properties by an integrated optimization algorithm in order to optimize the ...
Bastianelli, Luca +3 more
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Generalized Pre-Coded Quadrature Spatial Modulation-Aided STAR-RIS-NOMA [PDF]
This paper incorporates the concept of generalized pre-coded quadrature spatial modulation (GPQSM) into non-orthogonal multiple access (NOMA) systems aided by simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) to ...
Dang, Shuping +5 more
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Robust and secure communications using dynamic rotations reconfigurable intelligent surface
ICT ExpressThis paper investigates the secure transmission problem using a dynamically reconfigurable intelligent surface (RIS). Considering an eavesdropping scenario where a multi-antenna eavesdropper has inadequate channel state information, a resilient ...
Kunyu Li +5 more
doaj +1 more source
User Clustering for STAR-RIS Assisted Full-Duplex NOMA Communication Systems [PDF]
In contrast to conventional reconfigurable intelligent surface (RIS), simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has been proposed recently to enlarge the serving area from 180o to 360o coverage.
Chae, Chan-Byoung +3 more
core
STAR-RIS-Assisted Millimeter-Wave Secure Communication with Multiple Eavesdroppers
MathematicsAiming to address the limited coverage of conventional reconfigurable intelligent surfaces (RISs), this study proposes a millimeter-wave secure communication scheme based on the simultaneously transmitting and reflecting reconfigurable intelligent ...
Binghui Qian +2 more
doaj +1 more source
Fluid Reconfigurable Intelligent Surfaces: Joint On-Off Selection and Beamforming With Discrete Phase Shifts [PDF]
This letter proposes a fluid reconfigurable intelligent surface (FRIS) paradigm, extending the conventional reconfigurable intelligent surface (RIS) technology to incorporate position reconfigurability of the elements.
Alexandropoulos, George C +5 more
core
STAR-RIS-assisted key generation method in quasi-static environment
EURASIP Journal on Wireless Communications and NetworkingIn this paper, we introduce a new method to solve the low-entropy problem in a quasi-static environment. We utilize a simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) that transmits and reflects incoming signals to ...
Yang Ma +4 more
doaj +1 more source
Joint Active and Passive Beamforming Optimization for Beyond Diagonal RIS-Aided Multi-User Communications [PDF]
Benefiting from its capability to generalize existing reconfigurable intelligent surface (RIS) architectures and provide additional design flexibility via interactions between RIS elements, beyond-diagonal RIS (BD-RIS) has attracted considerable research
Fang, Tianyu, Mao, Yijie, Zhou, Xiaohua
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A Survey of Multiple Reconfigurable Intelligent Surface Aided Systems
IEEE AccessReconfigurable intelligent surface (RIS) can establish reflection links between base stations and users, providing high passive beamforming gain that significantly enhances the system’s achievable rate. Given the outstanding performance of RIS, we
Renjie Liang, Junjie Liang
doaj +1 more source
Journal of Communications Software and SystemsReconfigurable Intelligent Surfaces (RIS) are gaining significant global interest as a potential technology that could enable 6G. An efficient method employs passive element reflectors to extend coverage of the non-line of sight (NLOS) millimeter-wave ...
Bushra Jarjees Qeryaqos +1 more
doaj +1 more source