1.7k citations · 3.7k across the 150 of their papers we have counts for
26 papers · 1 filter
Power Minimization with Rate Constraints for Multi-User MIMO Systems with Large-Size RISs
Silvia Palmucci, Giulio Bartoli, Andrea Abrardo +2
This study focuses on the optimization of a single-cell multi-user multiple-input multiple-output (MIMO) system with multiple large-size reconfigurable intelligent surfaces (RISs).…
Degrees of Freedom of Holographic MIMO in Multi-user Near-field Channels
Houfeng Chen, Shaohua Yue, Marco Di Renzo +1
Holographic multiple-input multiple-output (HMIMO) is an emerging technology for 6G communications, in which numerous antenna units are integrated in a limited space. As the HMIMO…
Secrecy Energy Efficiency Maximization in RIS-Aided Wireless Networks with Statistical CSI
Robert Kuku Fotock, Agbotiname Lucky Imoize, Alessio Zappone +2
This work studies the problem of secrecy energy efficiency maximization in multi-user wireless networks aided by reconfigurable intelligent surfaces, in which an eavesdropper overh…
Energy Efficiency Comparison of RIS Architectures in MISO Broadcast Channels
Mohammad Soleymani, Ignacio Santamaria, Eduard Jorswieck +2
In this paper, we develop energy-efficient schemes for multi-user multiple-input single-output (MISO) broadcast channels (BCs), assisted by reconfigurable intelligent surfaces (RIS…
Practical Challenges for Reliable RIS Deployment in Heterogeneous Multi-Operator Multi-Band Networks
Mehdi Monemi, Mehdi Rasti, Arthur S. de Sena +3
Reconfigurable intelligent surfaces (RISs) have been introduced as arrays of nearly passive elements with software-tunable electromagnetic properties to dynamically manipulate the…
Analysis of 3GPP and Ray-Tracing Based Channel Model for 5G Industrial Network Planning
Gurjot Singh Bhatia, Yoann Corre, Linus Thrybom +1
Appropriate channel models tailored to the specific needs of industrial environments are crucial for the 5G private industrial network design and guiding deployment strategies. Thi…
Non-Terrestrial Networks for 6G: Integrated, Intelligent and Ubiquitous Connectivity
Muhammad Ali Jamshed, Aryan Kaushik, Miguel Dajer +6
Universal connectivity has been part of past and current generations of wireless systems, but as we approach 6G, the subject of social responsibility is being built as a core compo…
Spatial Multiplexing in Near-Field Line-of-Sight MIMO Communications: Paraxial and Non-Paraxial Deployments
Juan Carlos Ruiz-Sicilia, Marco Di Renzo, Placido Mursia +2
Sixth generation (6G) wireless networks are envisioned to include aspects of energy footprint reduction (sustainability), besides those of network capacity and connectivity, at the…
CmWave and Sub-THz: Key Radio Enablers and Complementary Spectrum for 6G
Mayur V. Katwe, Aryan Kaushik, Keshav Singh +7
Sixth-generation (6G) networks are poised to revolutionize communication by exploring alternative spectrum options, aiming to capitalize on strengths while mitigating limitations i…
Secrecy Energy Efficiency Maximization in RIS-Aided Wireless Networks
Robert Kuku Fotock, Alessio Zappone, Marco Di Renzo
This work proposes a provably convergent and low complexity optimization algorithm for the maximization of the secrecy energy efficiency in the uplink of a wireless network aided b…
Sustainable Wireless Networks via Reconfigurable Intelligent Surfaces (RISs): Overview of the ETSI ISG RIS
Ruiqi Liu, Shuang Zheng, Qingqing Wu +5
Reconfigurable Intelligent Surfaces (RISs) are a novel form of ultra-low power devices that are capable to increase the communication data rates as well as the cell coverage in a c…
COLoRIS: Localization-agnostic Smart Surfaces Enabling Opportunistic ISAC in 6G Networks
Guillermo Encinas-Lago, Francesco Devoti, Marco Rossanese +3
The integration of Smart Surfaces in 6G communication networks, also dubbed as Reconfigurable Intelligent Surfaces (RISs), is a promising paradigm change gaining significant attent…
A Comprehensive Tutorial and Survey of O-RAN: Exploring Slicing-aware Architecture, Deployment Options, Use Cases, and Challenges
Khurshid Alam, Mohammad Asif Habibi, Matthias Tammen +8
Open-radio access network (O-RAN) seeks to establish the principles of openness, programmability, automation, intelligence, and hardware-software disaggregation with interoperable…
Design and Optimization of Reconfigurable Intelligent Surfaces Using the PEEC Method
Giuseppe Pettanice, Marco Di Renzo, Roberto Valentini +5
The design and optimization of Reconfigurable Intelligent Surfaces (RISs) are key challenges for future wireless communication systems. RISs are devices that can manipulate electro…
Multiport Network Modeling for Reconfigurable Intelligent Surfaces: Numerical Validation with a Full-Wave PEEC Simulator
Giuseppe Pettanice, Marco Di Renzo, Sumin Jeong +5
Reconfigurable Intelligent Surface (RIS) modeling and optimization are a crucial steps in developing the next generation of wireless communications. To this aim, the availability o…
T3DRIS: Advancing Conformal RIS Design through In-depth Analysis of Mutual Coupling Effects
Placido Mursia, Francesco Devoti, Marco Rossanese +4
This paper presents a theoretical and mathematical framework for the design of a conformal reconfigurable intelligent surface (RIS) that adapts to non-planar geometries, which is a…
Spatially Correlated RIS-Aided Secure Massive MIMO Under CSI and Hardware Imperfections
Dan Yang, Jindan Xu, Wei Xu +4
This paper investigates the integration of a reconfigurable intelligent surface (RIS) into a secure multiuser massive multiple-input multiple-output (MIMO) system in the presence o…
Joint Training and Reflection Pattern Optimization for Non-Ideal RIS-Aided Multiuser Systems
Zhenyao He, Jindan Xu, Hong Shen +3
Reconfigurable intelligent surface (RIS) is a promising technique to improve the performance of future wireless communication systems at low energy consumption. To reap the potenti…
Channel Estimation for Stacked Intelligent Metasurface-Assisted Wireless Networks
Xianghao Yao, Jiancheng An, Lu Gan +2
Emerging technologies, such as holographic multiple-input multiple-output (HMIMO) and stacked intelligent metasurface (SIM), are driving the development of wireless communication s…
Next Generation Advanced Transceiver Technologies for 6G and Beyond
Changsheng You, Yunlong Cai, Yuanwei Liu +4
To accommodate new applications such as extended reality, fully autonomous vehicular networks and the metaverse, next generation wireless networks are going to be subject to much m…
RIS-Assisted Physical Layer Security in Emerging RF and Optical Wireless Communication Systems: A Comprehensive Survey
Majid H. Khoshafa, Omar Maraqa, Jules M. Moualeu +5
Physical layer security (PLS) has received a growing interest from the research community for its ability to safeguard data confidentiality without relying on key distribution or e…
Beamforming Optimization for Active RIS-Aided Multiuser Communications With Hardware Impairments
Zhangjie Peng, Zhibo Zhang, Cunhua Pan +3
In this paper, we consider an active reconfigurable intelligent surface (RIS) to assist the multiuser downlink transmission in the presence of practical hardware impairments (HWIs)…
Exploring RIS Coverage Enhancement in Factories: From Ray-Based Modeling to Use-Case Analysis
Gurjot Singh Bhatia, Yoann Corre, Thierry Tenoux +1
Reconfigurable Intelligent Surfaces (RISs) have risen to the forefront of wireless communications research due to their proactive ability to alter the wireless environment intellig…
Two-Dimensional Direction-of-Arrival Estimation Using Stacked Intelligent Metasurfaces
Jiancheng An, Chau Yuen, Yong Liang Guan +4
Stacked intelligent metasurfaces (SIM) are capable of emulating reconfigurable physical neural networks by relying on electromagnetic (EM) waves as carriers. They can also perform…