Reconfigurable Intelligent Surfaces

Also known as RIS

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Overview

Reconfigurable intelligent surfaces use controllable electromagnetic elements to shape wireless propagation, helping extend coverage, focus signals, and support tasks such as localization and edge computing. Researchers optimize element phases, amplitudes, placement, and beamforming through mathematical methods such as alternating optimization, as well as deep and multi-agent reinforcement learning, graph neural networks, and learned channel estimation. Designs range from passive and active surfaces to simultaneous transmitting-and-reflecting and stacked metasurfaces, including systems that perform signal processing in the wave domain. A central challenge is making control scalable and reliable when channel-state information is costly or unavailable, while accounting for hardware constraints, mobility, energy use, and fair resource allocation.

Latest papers

CardsList

30 papers2 papers in the last four weeks, down 33% on the four weeks before. 0.0% of all new papers.

  1. XL MIMO Extreme Learning Machines: Wave-Domain Inference with Stacked Metasurfaces

    Oct 26, 2026Kyriakos Stylianopoulos, Mattia Fabiani, Davide Dardari +1Reconfigurable Intelligent SurfacesTwo-Layer Neural Networks

    Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, 16122 Athens, Greece · Dipartimento di Ingegneria dell’Energia Elettrica e dell’Informazione “Guglielmo Marconi” (DEI), WiLAB-CNIT, University of Bologna, Cesena Campus, Cesena (FC), Italy

  2. Movable-Element Multi-Functional RIS-Assisted Hybrid RSMA-NOMA: A Constrained Hybrid Reinforcement Learning Approach

    Oct 26, 2026Li-Hsiang Shen, Chi-Te KuoReconfigurable Intelligent SurfacesWireless Resource Allocation

    Department of Communication Engineering, National Central University, Taoyuan 320317, Taiwan

  3. GPU-Accelerated Robust MA--RIS Pre-Optimization for Communication and Target Illumination

    Oct 15, 2026Tran Le Dung, Ho Viet Duc LuongMulti-Objective OptimizationIntegrated Sensing and Communication

    School of Information and Communications Technology (SoICT), Hanoi University of Science and Technology (HUST), Hanoi 100000, Vietnam

  4. A 3GPP-Compliant Benchmark Dataset for RIS-Aided Beyond 5G Networks

    Sep 30, 2026Pujitha Mamillapalli, Pankaj Singh Rathour, Abhinav KumarReconfigurable Intelligent SurfacesBenchmark Design

    Department of Artificial Intelligence Indian Institute of Technology Hyderabad, India · Department of Electrical Engineering Indian Institute of Technology Hyderabad, India

  5. A Particle-Swarm-Assisted Gradient Meta-Learning Algorithm for Joint Transmit Precoding and STAR-RIS Coefficient Optimization

    Sep 24, 2026Kang ZhouReconfigurable Intelligent SurfacesLearning to Optimize

    School of Artificial Intelligence, Mianyang City College, Mianyang 621000, China

  6. Orientation-Aware Control and Trajectory Design for Aerial RIS-Assisted Wireless Communications

    Sep 19, 2026Abdoul Karim A. H. Saliah, Hajar El Hammouti, Daniel Bonilla Licea +1Wireless CommunicationsReconfigurable Intelligent Surfaces

    College of Computing, Mohammed VI Polytechnic University, Ben Guerir, Morocco · Department of Cybernetics, Czech Technical University in Prague, Prague, Czech Republic

  7. Decision Transformer for UAV-Mounted RIS-Assisted Dynamic D2D Communications

    Sep 9, 2026Yaxuan LiuTrajectory OptimizationReconfigurable Intelligent Surfaces

    School of Computer Engineering, School of Artificial Intelligence, Jiangsu Second Normal University, Nanjing 210013, China

  8. Over-The-Air Extreme Learning Machines with Nonlinear Stacked Intelligent Metasurfaces

    Aug 27, 2026Kyriakos Stylianopoulos, Mattia Fabiani, Giulia Torcolacci +2Efficient Neural Network InferenceReconfigurable Intelligent Surfaces

    Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Greece · DEI, University of Bologna, Italy · National Laboratory of Wireless Communications (WiLab), CNIT, Italy

  9. RIS-Aided mmWave Localization Under Cross-Link Interference via Beam-Domain ML Fingerprinting

    Aug 7, 2026Md Tarek Hassan, Dmitry Zelenchuk, Muhammad Ali Babar AbbasiReconfigurable Intelligent SurfacesWireless Localization

    Centre for Wireless Innovation (CWI), School of Electronics, Electrical Engineering and Computer Science (EEECS), Queen’s University Belfast, U.K.

  10. Hybrid-Field Sparse Channel Representation and Recovery for XL-RIS-Assisted mmWave MIMO Systems

    Jul 26, 2026Wenkai Liu, Nan Ma, Jianqiao Chen +2Sparse RecoveryReconfigurable Intelligent Surfaces

    Beijing University of Posts and Telecommunications, Beijing 100876, China · Department of Broadband Communication, Peng Cheng Laboratory, Shenzhen 518055, China · ZGC Institute of Ubiquitous-X Innovation and Applications, Beijing 100876, China

  11. Convergence-Latency-Aware Adaptive Modulation and Resource Allocation in RIS-Assisted Wireless Federated Learning

    Jul 22, 2026Liwei Wang, Wen Chen, Jun Li +4Reconfigurable Intelligent SurfacesWireless Communications

    Broadband Access Network Laboratory, Shanghai Jiao Tong University, Minhang 200240, China · School of Information Science and Engineering, Southeast University, Nanjing 210096, China · Data61, CSIRO, Sydney, NSW 2015, Australia +2

  12. Active Beyond-Diagonal RIS Empowered Heterogeneous Edge Computing: A Distributional Reinforcement Learning Approach

    Jul 14, 2026Tianyu Pang, Hongyu LiDistributional RLReconfigurable Intelligent Surfaces

    Internet of Things Thrust, The Hong Kong University of Science and Technology (Guangzhou), Guangzhou, China

  13. Active Sensing for RIS-Aided Tracking and Power Control: A Hybrid Neuroevolution and Supervised Learning Approach

    Jun 30, 2026George Stamatelis, Hui Chen, Henk Henk Wymeersch +1Reconfigurable Intelligent SurfacesActive Sensing

    Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Panepistimiopolis Ilissia, 16122 Athens, Greece · Department of Electrical Engineering, Chalmers University of Technology, 412 58 Gothenburg, Sweden

  14. RIS-Assisted Proactive Handover for Reliable mmWave Wireless Networks

    Jun 25, 2026Alaa Adnan, Mohammad Al-Quraan, Ahmed Zoha +5Reconfigurable Intelligent SurfacesWireless Communications

    James Watt School of Engineering, University of Glasgow, Glasgow, G12 8QQ, UK · Nokia Standards, USA · KU 6G Research Center, Department of Computer and Communication Engineering, Khalifa University, Abu Dhabi 127788, UAE +3

  15. Multi-Agent DRL for QoS and Energy Optimization in RIS-Enabled Open-RAN Industrial 6G TN/NTN Networks

    May 31, 2026Marwan Dhuheir, Thang X. Vu, Symeon Chatzinotas6G NetworksReconfigurable Intelligent Surfaces

    The Interdisciplinary Centre for Security, Reliability and Trust (SnT), University of Luxembourg, Luxembourg.

  16. Spectral- and Energy-efficient Multi-BS Multi-RIS Pinching-antenna Systems: A GNN-based Approach

    May 2, 2026Changpeng He, Yang Lu, Wei Chen +3Reconfigurable Intelligent SurfacesWireless Communications

    State Key Laboratory of Advanced Rail Autonomous Operation, and also with the School of Computer Science and Technology, Beijing Jiaotong University, Beijing 100044, China · School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China · School of Electronic Engineering and Computer Science, Queen Mary University of London, London +2

  17. Path-Based Quantum Meta-Learning for Adaptive Optimization of Reconfigurable Intelligent Surfaces

    Apr 20, 2026Noha Hassan, Xavier Fernando, Halim YanikomerogluAdaptive Model RoutingReconfigurable Intelligent Surfaces

    Department of Systems and Computer Engineering, Carleton University, Ottawa, ON, Canada · Department of Electrical, Computer, and Biomedical Engineering, Toronto Metropolitan University, Toronto, ON, Canada

  18. Aerial Multi-Functional RIS in Fluid Antennas-Aided Full-Duplex Networks: A Self-Optimized Hybrid Deep Reinforcement Learning Approach

    Apr 15, 2026Li-Hsiang Shen, Yu-Quan ZhengHybrid Action Space RLWireless Communications

    Department of Communication Engineering, National Central University, Taoyuan 320317, Taiwan

  19. Learning to Focus: CSI-Free Hierarchical MARL for Reconfigurable Reflectors

    Apr 6, 2026Hieu Le, Mostafa Ibrahim, Oguz Bedir +2Reconfigurable Intelligent SurfacesHierarchical RL

    Electrical and Computer Engineering Texas A&M University College Station, Texas, USA · Engineering Technology and Industrial Distribution Texas A&M University College Station, Texas, USA · School of Performance, Visualization, and Fine Arts Texas A&M University College Station, Texas, USA

  20. Bypassing the CSI Bottleneck: MARL-Driven Spatial Control for Reflector Arrays

    Apr 6, 2026Hieu Le, Oguz Bedir, Mostafa Ibrahim +2Wireless CommunicationsReconfigurable Intelligent Surfaces

    Electrical and Computer Engineering, Texas A&M University, College Station, Texas, USA · Engineering Technology and Industrial Distribution, Texas A&M University, College Station, Texas, USA · School of Performance, Visualization, and Fine Arts, Texas A&M University, College Station, Texas, USA +1

  21. Relay-Assisted Activation-Integrated SIM for Wireless Physical Neural Networks

    Apr 5, 2026Meng Hua, Deniz GündüzReconfigurable Intelligent Surfaces

    Department of Electrical and Electronic Engineering, Imperial College London, United Kingdom

  22. Trustworthy AI-Driven Dynamic Hybrid RIS: Joint Optimization and Reward Poisoning-Resilient Control in Cognitive MISO Networks

    Mar 27, 2026Deemah H. Tashman, Soumaya CherkaouiWireless CommunicationsReconfigurable Intelligent Surfaces

    LINCS Laboratory, Department of Computer and Software Engineering, Polytechnique Montréal, Montréal, QC, Canada, H3T 1J4

  23. Cooperative Deep Reinforcement Learning for Fair RIS Allocation

    Mar 26, 2026Martin Mark Zan, Stefan SchwarzWireless Resource AllocationFair Resource Allocation

    Institute of Telecommunications, TU Wien, Vienna, Austria

  24. A Learnable SIM Paradigm: Fundamentals, Training Techniques, and Applications

    Mar 13, 2026Hetong Wang, Yashuai Cao, Tiejun LvWireless CommunicationsReconfigurable Intelligent Surfaces

    School of Information and Communication Engineering, Beijing University of Posts and Telecommunications (BUPT), Beijing 100876, China · School of Intelligence Science and Technology, University of Science and Technology Beijing, Beijing 100083, China

  25. FRIEND: Federated Learning for Joint Optimization of multi-RIS Configuration and Eavesdropper Intelligent Detection in B5G Networks

    Mar 11, 2026Maria Lamprini A. Bartsioka, Ioannis A. Bartsiokas, Anastasios K. Papazafeiropoulos +3Industrial Internet of ThingsWireless Communications

    Microwave and Fiber Optics Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 9 Heroon Polytechneiou str, Zografou 15780, Athens, Greece · Communications and Intelligent Systems Research Group, University of Hertfordshire, AL10 9AB Hatfield, U.K. · Intelligent Communications and Broadband Networks Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 9 Heroon Polytechneiou str, Zografou 15780, Athens, Greece

  26. PPO-Based Hybrid Optimization for RIS-Assisted Semantic Vehicular Edge Computing

    Mar 10, 2026Wei Feng, Jingbo Zhang, Qiong Wu +2Computation OffloadingEdge Computing

    School of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China · State Key Laboratory of Space Network and Communications, Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China · Qualcomm, San Jose, CA 95110, USA

  27. Learning to Reflect: Hierarchical Multi-Agent Reinforcement Learning for CSI-Free mmWave Beam-Focusing

    Mar 7, 2026Hieu Le, Oguz Bedir, Mostafa Ibrahim +2Millimeter-Wave CommunicationsWireless Communications

    Texas A&M University

  28. Metasurfaces-Integrated Wireless Neural Networks for Lightweight Over-The-Air Edge Inference

    Feb 22, 2026Kyriakos Stylianopoulos, Mario Edoardo Pandolfo, Paolo Di Lorenzo +1Wireless CommunicationsEdge Inference

    Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, 16122 Athens, Greece · National Inter-University Consortium for Telecommunications (CNIT), Parma, Italy · DIAG Department, Sapienza University of Rome, via Ariosto 25, Rome, Italy +1

  29. Auction-Based RIS Allocation With DRL: Controlling the Cost-Performance Trade-Off

    Feb 18, 2026Martin Mark Zan, Stefan SchwarzWireless Resource AllocationReconfigurable Intelligent Surfaces

    Institute of Telecommunications, TU Wien, Vienna, Austria

  30. DRL-AdaPart: DRL-Driven Adaptive STAR-RIS Partitioning for Fair and Efficient Resource Utilization

    Jul 9, 2024Ashok S. Kumar, Nancy Nayak, Sheetal Kalyani +2Reconfigurable Intelligent SurfacesFair Resource Allocation

    Department of Electrical Engineering, Indian Institute of Technology Madras, Chennai, India · Department of Electrical and Electronic Engineering, Imperial College London, United Kingdom · Department of Electrical and Electronic Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka +1