Fair beam allocations through reconfigurable intelligent surfaces

R Xiong, K Yin, T Mi, J Lu, K Wan… - IEEE Journal on …, 2024 - ieeexplore.ieee.org
A fair beam allocation framework through reconfigurable intelligent surfaces (RISs) is
proposed, incorporating the Max-min criterion. This framework focuses on designing explicit …

Localization and discrete beamforming with a large reconfigurable intelligent surface

B Luo, Y Deng, M Dong, Z Huang, X Chen… - arXiv preprint arXiv …, 2023 - arxiv.org
In millimeter-wave (mmWave) cellular systems, reconfigurable intelligent surfaces (RISs) are
foreseeably deployed with a large number of reflecting elements to achieve high …

Physics-Inspired Discrete-Phase Optimization for 3D Beamforming with PIN-Diode Extra-Large Antenna Arrays

M Kim, A Stockley, K Briggs, K Jamieson - arXiv preprint arXiv:2311.16128, 2023 - arxiv.org
Large antenna arrays can steer narrow beams towards a target area, and thus improve the
communications capacity of wireless channels and the fidelity of radio sensing. Hardware …

Optimal Power Aggregation of Reconfigurable Intelligent Surfaces: An Alternating Inner Product Maximization Approach

R Xiong, T Mi, J Lu, K Wan, K Yin… - IEEE Transactions on …, 2025 - ieeexplore.ieee.org
The reconfigurable intelligent surface (RIS) has garnered considerable attention due to its
substantial potential in reconfiguring the electromagnetic environment. In RIS-aided …

Achieving Optimum Received Power for Discrete-Phase RISs With Elementwise Updates in the Least Number of Steps

DK Pekcan, E Ayanoglu - IEEE Open Journal of the …, 2024 - ieeexplore.ieee.org
The problem of optimizing discrete phases in a reconfigurable intelligent surface (RIS) to
maximize the received power at a user equipment is addressed. Necessary and sufficient …

Received Power Maximization Using Nonuniform Discrete Phase Shifts for RISs With a Limited Phase Range

DK Pekcan, H Liao, E Ayanoglu - IEEE Open Journal of the …, 2024 - ieeexplore.ieee.org
To maximize the received power at a user equipment, the problem of optimizing a
reconfigurable intelligent surface (RIS) with a limited phase range and nonuniform discrete …

RIS-Aided Wireless Fingerprinting Localization Based on Multilayer Graph Representations

S Sardellitti, P Di Lorenzo… - IEEE Communications …, 2024 - ieeexplore.ieee.org
The aim of this letter is to propose a novel method for wireless fingerprinting localization
empowered by reconfigurable intelligent surfaces (RISs), exploiting the flexibility offered by …

Achieving Optimum Received Power with Elementwise Updates in the Least Number of Steps for Discrete-Phase RISs

DK Pekcan, E Ayanoglu - arXiv preprint arXiv:2311.07686, 2023 - arxiv.org
The problem of optimizing discrete phases in a reconfigurable intelligent surface (RIS) to
maximize the received power at a user equipment is addressed. Necessary and sufficient …

Optimal Configuration of Reconfigurable Intelligent Surfaces With Non-uniform Phase Quantization

J Lu, R Xiong, T Mi, K Yin, RC Qiu - arXiv preprint arXiv:2405.06967, 2024 - arxiv.org
The existing methods for Reconfigurable Intelligent Surface (RIS) beamforming in wireless
communication are typically limited to uniform phase quantization. However, in real world …

Fair Beam Synthesis and Suppression via Transmissive Reconfigurable Intelligent Surfaces

R Xiong, J Lu, K Yin, T Mi, RC Qiu - arXiv preprint arXiv:2411.02008, 2024 - arxiv.org
Existing phase optimization methods in reconfigurable intelligent surfaces (RISs) face
significant challenges in achieving flexible beam synthesis, especially for directional beam …