Explanipedia

A Refined Alternating Optimization for Sum Rate Maximization in SIM-Aided Multiuser MISO Systems Open

Eduard E. Bahingayi, Shuying Lin, Murat Uysal, Marco Di Renzo, Le‐Nam Tran · 2025

Stacked intelligent metasurfaces (SIMs) have emerged as a disruptive technology for future wireless networks. To investigate their capabilities, we study the sum rate maximization problem in an SIM-based multiuser (MU) multiple-input singl…

Reconfigurable Intelligent Surfaces in Factory Environments: Channel Modeling and Use-Case Analysis Open

Gurjot Singh Bhatia, Yoann Corre, Thierry Tenoux, Marco Di Renzo · 2025

Engineering Computer science

International audience

Multi-beam Beamforming in RIS-aided MIMO Subject to Reradiation Mask Constraints -- Optimization and Machine Learning Design Open

Shumin Wang, Hajar El Hassani, Marco Di Renzo, Marios I. Poulakis · 2025

Reconfigurable intelligent surfaces (RISs) are an emerging technology for improving spectral efficiency and reducing power consumption in future wireless systems. This paper investigates the joint design of the transmit precoding matrices …

Introducing Meta-Fiber into Stacked Intelligent Metasurfaces for MIMO Communications: A Low-Complexity Design with only Two Layers Open

Hong Niu, Jiancheng An, Te‐Kao Wu, Jiangong Chen, Yufei Zhao , et al. · 2025

Stacked intelligent metasurfaces (SIMs), which integrate multiple programmable metasurface layers, have recently emerged as a promising technology for advanced wave-domain signal processing. SIMs benefit from flexible spatial degree-of-fre…

Secrecy Energy Efficiency Maximization in RIS-Aided Networks: Active or Nearly-Passive RIS? Open

Robert Kuku Fotock, Agbotiname Lucky Imoize, Alessio Zappone, Marco Di Renzo, Roberto Garello · 2025

This work addresses the problem of secrecy energy efficiency (SEE) maximization in RIS-aided wireless networks. The use of active and nearly-passive RISs are compared and their trade-off in terms of SEE is analyzed. Considering both perfec…

Energy Efficiency Maximization of Holographic Beamforming Empowered by Nearly-Passive RHS Open

Robert Kuku Fotock, Agbotiname Lucky Imoize, Alessio Zappone, Marco Di Renzo, Yangishi Zhang · 2025

Computer science Physics Engineering

International audience

Movable Antennas-aided Wireless Energy Transfer for the Internet of Things Open

Osmel Martínez Rosabal, Onel Alcaraz López, Marco Di Renzo, Richard Demo Souza, Hirley Alves · 2025

Recent advancements in movable antennas (MAs) technology create new opportunities for 6G and beyond wireless systems. MAs are promising for radio frequency wireless energy transfer because they can dynamically adjust antenna positions, imp…

Power Minimization With Rate Constraints for Multi-User MIMO Systems With Large-Size RISs Open

Silvia Palmucci, Giulio Bartoli, Andrea Abrardo, Marco Moretti, Marco Di Renzo · 2025

Computer science Engineering

International audience

SIM-Enabled Hybrid Digital-Wave Beamforming for Fronthaul-Constrained Cell-Free Massive MIMO Systems Open

Eunhyuk Park, Seok-Hwan Park, Osvaldo Simeone, Marco Di Renzo, Shlomo Shamai · 2025

As the dense deployment of access points (APs) in cell-free massive multiple-input multiple-output (CF-mMIMO) systems presents significant challenges, per-AP coverage can be expanded using large-scale antenna arrays (LAAs). However, this a…

Opportunistic Subarray Grouping for RIS-Aided Massive Random Access in Cellular Connectivity Open

Yizhu Wang, Zhou Zhang, Saman Atapattu, Marco Di Renzo · 2025

International audience

RIS-Aided Networked Control Systems: A Goal-Oriented Phase Shift Optimization Approach Open

Mounir Dabouz, Mohamad Assaad, Marco Di Renzo, Touraj Soleymani · 2025

International audience

A Flexible Design Framework for Integrated Communication and Computing Receivers Open

Kuranage Roche Rayan Ranasinghe, Kengo Ando, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu, Takumi Takahashi , et al. · 2025

We propose a framework to design integrated communication and computing (ICC) receivers capable of simultaneously detecting data symbols and performing over-the-air computing (AirComp) in a manner that: a) is systematically generalizable t…

Channel-Aware Holographic Decision Fusion Open

Domenico Ciuonzo, Alessio Zappone, Marco Di Renzo · 2025

This work investigates Distributed Detection (DD) in Wireless Sensor Networks (WSNs) utilizing channel-aware binary-decision fusion over a shared flat-fading channel. A reconfigurable metasurface, positioned in the near-field of a limited …

Dynamical ON-OFF Control with Trajectory Prediction for Multi-RIS Wireless Networks Open

Kaining Wang, Bo Yang, Yusheng Lei, Zhiwen Yu, Xuelin Cao , et al. · 2025

Reconfigurable intelligent surfaces (RISs) have demonstrated an unparalleled ability to reconfigure wireless environments by dynamically controlling the phase, amplitude, and polarization of impinging waves. However, as nearly passive refl…

Non-Terrestrial Networks for 6G: Integrated, Intelligent, and Ubiquitous Connectivity Open

Muhammad Ali Jamshed, Aryan Kaushik, Miguel Dajer, Alessandro Guidotti, Fanny Parzysz , et al. · 2025

Computer science

To enable seamless 5G service continuity for mobile ground users traversing infrastructure-limited or obstructed regions, the integration of Non-Terrestrial Networks (NTNs) based on Low Earth Orbit (LEO) satellite constellations is being a…

Beamforming Design and Association Scheme for Multi-RIS Multi-User mmWave Systems Through Graph Neural Networks Open

Mengbing Liu, Chongwen Huang, Ahmed Alhammadi, Marco Di Renzo, Mérouane Debbah , et al. · 2025

Computer science Mathematics

International audience

Energy-Efficient SIM-assisted Communications: How Many Layers Do We Need? Open

Enyu Shi, Jiayi Zhang, Jiancheng An, Marco Di Renzo, Bo Ai , et al. · 2025

The stacked intelligent metasurface (SIM), comprising multiple layers of reconfigurable transmissive metasurfaces, is becoming an increasingly viable solution for future wireless communication systems. In this paper, we explore the integra…

Modeling, Capacity Studies, Antenna and System Designs for 6G/B6G 3-D Continuous-Space Radio Channels Enabled by Electromagnetic Information Theory Open

Cheng‐Xiang Wang, Junling Li, Jie Huang, Chen Huang, Zhaoyang Zhang , et al. · 2025

Computer science Engineering

Channel theory is a fundamental theory of wireless communications. The sixth generation (6G) and beyond 6G (B6G) wireless communication networks are expected to provide space-air- ground-sea global coverage. Base stations and users tend to…

Orthogonal Time-Frequency Space (OTFS) Aided Media-Based Modulation System For 6G and Beyond Wireless Communications Networks Open

Burak Ahmet Özden, Murat Kaymaz, Erdoğan Aydın, Emir Aslandogan, Hacı İlhan , et al. · 2025

This paper proposes a new orthogonal time frequency space (OTFS)-based index modulation system called OTFS-aided media-based modulation (MBM) scheme (OTFS-MBM), which is a promising technique for high-mobility wireless communication system…

A New OTFS-Based Index Modulation System for 6G and Beyond: OTFS-Based Code Index Modulation Open

Burak Ahmet Özden, Erdoğan Aydın, Emir Aslandogan, Hacı İlhan, Ertuğrul Başar , et al. · 2025

This paper proposes the orthogonal time frequency space-based code index modulation (OTFS-CIM) scheme, a novel wireless communication system that combines OTFS modulation, which enhances error performance in high-mobility Rayleigh channels…

Integrated Sensing and Communications Over the Years: An Evolution Perspective Open

Di Zhang, Yuanhao Cui, Xiaowen Cao, Nanchi Su, Yi Gong , et al. · 2025

Integrated Sensing and Communications (ISAC) enables efficient spectrum utilization and reduces hardware costs for beyond 5G (B5G) and 6G networks, facilitating intelligent applications that require both high-performance communication and …

Realistic Evaluation of Impedance-Based RIS Modeling: Practical Insights and Applications Open

Ayane Lebeta Goshu, Placido Mursia, Vincenzo Sciancalepore, Marco Di Renzo, Xavier Costa‐Pérez · 2025

Computer science Engineering

Reconfigurable Intelligent Surfaces (RISs) have emerged as a promising technology for next-generation wireless communications, offering energy-efficient control of electromagnetic (EM) waves. While conventional RIS models based on phase sh…

Beyond Diagonal Reconfigurable Intelligent Surfaces for Multi-Carrier RF Wireless Power Transfer Open

Amirhossein Azarbahram, Onel L. A. López, Bruno Clerckx, Marco Di Renzo, Matti Latva‐aho · 2025

Computer science Engineering Physics

International audience

Deterministic and Statistical Analysis of the DoF of Continuous Linear Arrays in the Near Field Open

Αthanasios G. Kanatas, Charalampos K. Armeniakos, Harpreet S. Dhillon, Marco Di Renzo · 2025

This paper examines the number of communication modes, that is, the degrees of freedom (DoF) in a wireless line-of-sight channel comprising a small continuous linear intelligent antenna array in the near field of a large one. The framework…

Stacked Intelligent Metasurfaces for Multiuser Downlink Beamforming in the Wave Domain Open

Jiancheng An, Marco Di Renzo, Mérouane Debbah, H. Vincent Poor, Chau Yuen · 2025

Computer science Physics Engineering

International audience

Secrecy Rate Maximization for 6G Reconfigurable Holographic Surfaces Assisted Systems Open

Chandan Kumar Sheemar, Wali Ullah Khan, Marco Di Renzo, Asad Mahmood, Jorge Querol , et al. · 2025

Reconfigurable holographic surfaces (RHS) have emerged as a transformative material technology, enabling dynamic control of electromagnetic waves to generate versatile holographic beam patterns. This paper addresses the problem of secrecy …

Energy-Efficient UAV Communications With Directional Antennas: Tilting Effect Modeling and Trajectory Optimization Open

Xinhong Dai, Bin Duo, Xiaojun Yuan, Marco Di Renzo · 2025

Computer science Engineering Physics

International audience

Marco Di Renzo YOU? Author Swipe