TERahertz ReconfigurAble METAsurfaces for ultra-high rate wireless communications

Project Information

TERRAMETA

Grant agreement ID: 101097101

DOI

10.3030/101097101

EC signature date 15 November 2022

Start date 1 January 2023

End date 31 December 2025

Funded under

• Digital, Industry and Space

Total cost

€ 6 016 739,50

EU contribution

€ 5 883 264,50

Coordinated by

INESC TEC - INSTITUTO DE ENGENHARIADE SISTEMAS E COMPUTADORES, TECNOLOGIA E CIENCIA
Portugal

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Deliverables

Documents, reports (4)

Report on Dissemination Standardisation and Exploitation Activities (initial)

Report on Dissemination Standardisation and Exploitation Activities (initial, interim, final) (R, PU, Ed.: TUBS, M12/M24/M36). These reports will include updates to the dissemination plan.

Network architecture and updated requirements and scenarios

Network architecture and updated requirements and scenarios (R, PU, Ed.: DER, M18). This deliverable will provide the definition and specification of the THz RIS network architectures considering factory edge and outdoor use case environments. It will also provide an updated version of the scenarios after the iterative process and refinements.

Dissemination Plan

Dissemination Plan (R, PU, Ed.: TUBS, M6).

Requirements, use cases and scenario specifications

Requirements, use cases and scenario specifications (R, PU, Ed.: BT, M6). This deliverable will identify and describe the overall scenarios and use case requirements expected for a THz RIS deployment in 6G within a wireless network. It will include basic scenario’s feasibility analysis using system level simulations.

Data Management Plan (1)

Data management plan (initial)

Data management plan (DMP, PU, Ed.: INESC, M6/M33). This report consists of the project Data Management Plan based on the template recommended by the EC, describing how data generated in the project is exploited, accessed, curated and preserved. The initial version will be delivered by Month 6. The document will be maintained by INESC throughout the project, and an updated version will be submitted by M33.

Publications

Conference proceedings (65)

Energy Efficient Interference Management For THz X-Haul Using Reconfigurable Intelligent Surfaces

Author(s): Bo Kum Jung, Thomas Kürner
Published in: 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2024, ISSN 2162-2027
Publisher: IEEE
DOI: 10.1109/IRMMW-THz60956.2024.10697896

Revisiting Risley Prism Transmit-Array Antennas Using a Novel Co-Design Phase Correction Approach

Author(s): Sérgio A. Matos, Nelson J. G. Fonseca, João C. Serra, João Felicio, Jorge Costa, Carlos Femandes
Published in: 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), 2024
Publisher: IEEE
DOI: 10.1109/AP-S/INC-USNC-URSI52054.2024.10686650

Enhancing NLoS RIS-Aided Localization with Optimization and Machine Learning

Author(s): Rafael A. Aguiar; Nuno Paulino; Luís M. Pessoa
Published in: 2023 IEEE Globecom Workshops (GC Wkshps), 2023, ISSN 2166-0077
Publisher: IEEE
DOI: 10.48550/arXiv.2405.01928

Power Scalability Modeling of Reconfigurable Intelligent Surfaces for THz Applications

Author(s): Praveen Naidu Vummadisetty, Juan Andres Vasquez-Peralvo, Symeon Chatzinotas, Juan Carlos Merlano Duncan, Aral Zorkun, Tung Phan
Published in: 2024 International Symposium on Antennas and Propagation (ISAP), 2025
Publisher: IEEE
DOI: 10.1109/ISAP62502.2024.10846560

Federated Multi-Task Learning For THZ Wideband Channel And DOA Estimation

Author(s): A. M. Elbir, W. Shi, K. V. Mishra and S. Chatzinotas
Published in: International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW), 2023, ISBN 979-8-3503-0261-5
Publisher: IEEE
DOI: 10.48550/arXiv.2207.06017

Initial Assessment of THz Indoor Channel with Passive Reflective Intelligent Surfaces

Author(s): Bo Kum Jung, Varvara V. Elesina, Sergio Matos, Raffaele D’Errico, Thomas Kürner
Published in: 2024 International Symposium on Antennas and Propagation (ISAP), 2025
Publisher: IEEE
DOI: 10.1109/ISAP62502.2024.10846784

Impact of Safety Angle on Channel Capacity in THz X-Haul Links

Author(s): Bo Kum Jung, Thomas Kürner
Published in: 2024 International Symposium on Antennas and Propagation (ISAP), 2025
Publisher: IEEE
DOI: 10.1109/ISAP62502.2024.10846774

Reconfigurable Intelligent Surfaces for THz: Hardware Impairments and Switching Technologies

Author(s): S. Matos, Y. Ma, Q. Luo, J. Deuermeier, L. Lucci, P. Gavriilidis, A. Kiazadeh, V. Lain-Rubio, T. D. Phan, P. J. Soh, A. Clemente, L. M. Pessoa, and G. C. Alexandropoulos
Published in: ICEAA 2024, 2024, ISSN 2766-2284
Publisher: IEEE
DOI: 10.48550/arXiv.2402.13804

Improved Performance of a 1-Bit RIS by Using Two Switches per Bit Implementation

Author(s): Fábio Martinho Cardoso, Sergio Matos, Luis M. Pessoa, Antonio Clemente, Jorge R. Costa, Carlos A. Fernandes, João M. Felicio
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.23919/EuCAP60739.2024.10501608

Unit Cell Design for a Low-Profile Dual-Frequency Dual-Sense Circularly Polarized Folded Transmitarray

Author(s): Zhongliang Lu, Changjiang Zha, Qi Luo, Baiqing Tang, Yuanming Cai
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999336

Ultra-Wideband Metasurface at SubTHz: Hardware Design and Reflection Optimization

Author(s): Q. Luo, G. C. Alexandropoulos, Y. Zhou and X. Ma
Published in: European Conference on Antennas and Propagation (EuCAP 2023), 2023, ISSN 2164-3342
Publisher: IEEE
DOI: 10.23919/EuCAP57121.2023.10133193

Dual-Band Unit Cell for Electronically Reconfigurable Reflectarrays at mmWave

Author(s): Moufida Bouslama, Antonio Clemente
Published in: 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), 2024, ISSN 1947-1491
Publisher: IEEE
DOI: 10.1109/AP-S/INC-USNC-URSI52054.2024.10686317

Enhancing Wireless Communications at 300 GHz using RIS in an Industrial Scenario

Author(s): Georg Jensen, Bo Kum Jung, Qi Luo, Thomas Kürner
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999650

Dual-band frequency selective surface in quartz for transmitarray applications at sub-THz

Author(s): B. Ouardi, R. Sauleau, and A. Clemente
Published in: ICEAA 2024, 2024, ISSN 2766-2284
Publisher: IEEE
DOI: 10.1109/ICEAA61917.2024.10701638

Automatic Planning Algorithm of 300 GHz Backhaul Links Using Mesh Topology

Author(s): Y. Liu, B. K. Jung, and T. Kürner
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.23919/EuCAP60739.2024.10501317

On the Comparison of THz X-Haul Links using Generic Rain Cloud Movement

Author(s): B.K. Jung, T. Kürner
Published in: 2024 4th URSI Atlantic Radio Science Meeting (AT-RASC), 2024
Publisher: IEEE
DOI: 10.46620/URSIATRASC24/KBUS2823

Dual Dielectric Metasurface for Simultaneous Sensing and Reconfigurable Reflections

Author(s): Mahesh Birari, Deepak Singh Nagarkoti, Anestis Katsounaros, Hruday Kumar Reddy Mudireddy, Jagannath Malik, George C. Alexandropoulos
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.48550/ARXIV.2501.14042

A Novel Wideband 1-bit Reconfigurable Intelligent Surface Design for 26 GHz

Author(s): Tiago E. S. Oliveira; João R. Reis; Iñigo Cuiñas; Rafael F. S. Caldeirinha
Published in: ICEAA 2024, 2024, ISSN 2766-2284
Publisher: IEEE
DOI: 10.1109/ICEAA61917.2024.10701781

Reflecting Intelligent Surfaces Assisted High-Rank Ultra Massive MIMO Terahertz Channels

Author(s): C. Sheemar, S. Solanki, W. Khan, Z. Abdullah, E. Lagunas, S. Chatzinotas
Published in: Wireless Communications and Networking Conference (WCNC) workshops, 2024, ISSN 1558-2612
Publisher: IEEE
DOI: 10.1109/WCNC57260.2024.10571260

Initial Study of a Sub-THz Reconfigurable Reflector Using Actuated Liquid Metal Droplet

Author(s): Di Kong, Duy Tung Phan, Jaakko Palosaari, Jari Juuti, Aarno Pärssinen, Ping Jack Soh
Published in: 2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, 2024, ISSN 1947-1491
Publisher: IEEE
DOI: 10.1109/AP-S/INC-USNC-URSI52054.2024.10685964

T-RIS and R-RIS Experimental Characterization in the Sub-THz Band

Author(s): Bo Kum Jung, Varvara V. Elesina, Sergio Matos, Orestis Koutsos, Antonio Clemente, Thomas Kurner, Raffaele D'Errico
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999961

Design and Characterization of a Transmitarray for Near-Field Focusing at Sub-THz

Author(s): Marie Defives, Ronan Sauleau, Orestis Koutsos, Mathieu Caillet, Antonio Clemente
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999806

Full Duplex Holographic MIMO for Near-Field Integrated Sensing and Communications

Author(s): I. Gavras, M. A. Islam, B. Smida and G. C. Alexandropoulos
Published in: European Signal Processing Conference (EUSIPCO), 2023, ISSN 2076-1465
Publisher: IEEE
DOI: 10.23919/EUSIPCO58844.2023.10289894

On the Requirements on Reflective Intelligent Surfaces in THz NLOS Backhaul Links

Author(s): Thomas Kürner, Bo Kum Jung, Christoph Herold
Published in: XXXVth URSI General Assembly and Scientific Symposium, 2023
Publisher: IEEE
DOI: 10.46620/URSIGASS.2023.2288.FKNW9115

Near-Field Localization with 1-bit Quantized Hybrid A/D Reception

Author(s): I. Gavras, I. Atzeni, and G. C. Alexandropoulos
Published in: International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), 2024, ISSN 2379-190X
Publisher: IEEE
DOI: 10.48550/arXiv.2401.12029

Simultaneous Communications and Sensing with Hybrid Reconfigurable Intelligent Surfaces

Author(s): Ioannis Gavras, George C. Alexandropoulos
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.48550/ARXIV.2410.15836

Full-Duplex-Enabled Joint Communications and Sensing with Reconfigurable Intelligent Surfaces

Author(s): C. K. Sheemar, G. C. Alexandropoulos, D. Slock, J. Querol and S. Chatzinotas
Published in: European Signal Processing Conference (EUSIPCO), 2023, ISSN 2076-1465
Publisher: IEEE
DOI: 10.48550/arxiv.2306.10865

Wide-Angular Scanning Performance Enhancement Phased Aarray Using Phase Gradient Metasurface

Author(s): Yihan Ma, Qi Luo, Yonggang Zhou, Guangwei Yang
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999315

Scalability Analysis of Reflective Intelligent Surfaces at THz Frequencies

Author(s): J.A. Vasquez-Peralvo, P. N. Vummadisetty, S. Chatzinotas
Published in: IEEE APS 2024, 2024, ISSN 1947-1491
Publisher: IEEE
DOI: 10.1109/AP-S/INC-USNC-URSI52054.2024.10686964

NBA-OMP: Near-Field Beam-Split-Aware Orthogonal Matching Pursuit for Wideband THz Channel Estimation

Author(s): Ahmet M. Elbir, Kumar Vijay Mishra, Symeon Chatzinotas
Published in: ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023, ISSN 2379-190X
Publisher: IEEE
DOI: 10.1109/ICASSP49357.2023.10097141

Numerical tool for the analysis and synthesis of transmitarrays in Fresnel region

Author(s): M. Defives, R. Sauleau, and A. Clemente
Published in: IEEE APS 2024, 2024, ISSN 1947-1491
Publisher: IEEE
DOI: 10.1109/AP-S/INC-USNC-URSI52054.2024.10685999

Reconfigurable Intelligent Surfaces for THz: Hardware Design and Signal Processing Challenges

Author(s): Luis M. Pessoa, George C. Alexandropoulos, Antonio Clemente, Sérgio Matos, Ryan Husbands, Sean Ahearne, Qi Luo, Veronica Lain-Rubio, Thomas Kürner
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.48550/arXiv.2403.07889

A Phase Correcting Surface Based on a D-Band Transmitarray Antenna Using Hybrid-PCB-CMOS Technology

Author(s): Awanish Kumar, Jose Luis Gonzalez-Jimenez, Luca Lucci, Alexandre Siligaris, Antonio Clemente
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999498

Metasurface-based receivers with 1-bit ADCs for multi-user uplink communications

Author(s): P. Gavriilidis, I. Atzeni, and G. C. Alexandropoulos
Published in: International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), 2024, ISSN 2379-190X
Publisher: IEEE
DOI: 10.48550/arXiv.2401.07988

1-Bit SubTHz RIS with Planar Tightly Coupled Dipoles: Beam Shaping and Prototypes

Author(s): Xianjun Ma; Yonggang Zhou; Qi Luo; Yihan Ma; Kyriakos Stylianopoulos; George C. Alexandropoulos
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.48550/arXiv.2402.08445

Performance Analysis of THz Backhaul Links Assisted by Reconfigurable Intelligent Surfaces

Author(s): B. K. Jung and T. Kürner
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.23919/EuCAP60739.2024.10501169

RIS Subset Selection/Assignment Based on Multi-Armed Bandit in Multi-RIS-Aided Communications

Author(s): Aral Ertug Zorkun, Juan Andres Vasquez Peralvo, Praveen Naidu Vummadisetty, Symeon Chatzinotas
Published in: 2024 International Symposium on Antennas and Propagation (ISAP), 2025
Publisher: IEEE
DOI: 10.1109/ISAP62502.2024.10846175

CMOS Compatible 200 mm GaN-on-Si HEMTs for RF Switch Applications with 36 dBm CW Power Handling and 200 FS RonCoff

Author(s): L. Lucci, I. Charlet, Y. Gobil, F. Morisot, J. Delprato, S. Ruel, C. Benotmane, F. Laulagnet, P. Dezest, R. Bon, T. Bordignon, A. Clemente, A. Kumar, A. Anotta, T. Billon, B. Duriez, E. Morvan
Published in: 2024 IEEE International Electron Devices Meeting (IEDM), 2025
Publisher: IEEE
DOI: 10.1109/IEDM50854.2024.10872999

Simultaneous Near-Field THz Communications and Sensing with Full Duplex Metasurface Transceivers

Author(s): Ioannis Gavras, George C. Alexandropoulos
Published in: IEEE SPAWC, 2024, ISSN 1948-3252
Publisher: IEEE
DOI: 10.48550/arXiv.2407.18168

Double Directional Channel Measurements at 300 GHz in Indoor Environments Enhanced by Reconfigurable Intelligent Surfaces

Author(s): Bo Kum Jung, Johannes M. Eckhardt, Varvara V. Elesina, Thomas Kürner
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999320

Channel Measurements Involving Passive RIS at 300 GHz

Author(s): Lorenz H. W. Loeser, Sérgio Matos, Thomas Kürner
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999543

Concept paper on novel radio frequency resistive switches

Author(s): Asal Kiazadeh, Jonas Deuermeier, Emanuel Carlos, Rodrigo Martins, Sergio Matos, Fabio Martinho Cardoso, and Luis Manuel Pessoa
Published in: NANOARCH '23: Proceedings of the 18th ACM International Symposium on Nanoscale Architectures, 2024
Publisher: Association for Computing Machinery
DOI: 10.1145/3611315.3633267

Towards a Heuristic Path Loss Model for RIS Links

Author(s): Lorenz H. W. Loeser, Thomas Kürner
Published in: Proceedings of the 2025 International Symposium on Electromagnetic Theory - URSI EMTS 2025, 2025
Publisher: URSI - International Union of Radio Science
DOI: 10.46620/URSIEMTS25/SKHF6427

Sub-THz Spatially Modulated Beam Splitting Reflectors for Potential RIS Implementations

Author(s): Tung Duy Phan, Jaakko Palosaari, Di Kong, Tuomo Siponkosk, Sami Myllymaki, Marko E Leinonen, Aarno Pärssinen, Jari Juuti, Ping Jack Soh
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.23919/EuCAP60739.2024.10501537

Analysis of Reconfigurable Reflective Unit Cells in Waveguide Environment for Ka and D Band

Author(s): Sanaâ Finich, Mohamed Elsaid, Sofia I. Inacio, Henrique. M. Salgado, Luís. M. Pessoa
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999396

A Reconfigurable Intelligent Surface for 3.6 GHz Based on a Double Squared Slot Shaped Element

Author(s): Tiago E. S. Oliveira, João R. Reis, Iñigo Cuiñas, Rafael F. S. Caldeirinha
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999398

THz Communications on the Way towards its Application on 6G (Invited Plenary Talk)

Author(s): Thomas Kürner
Published in: International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2023, ISSN 2162-2035
Publisher: IEEE
DOI: 10.1109/IRMMW-THz57677.2023.10299324

Channel Modeling and Multi-User Precoding for Tri-Polarized Holographic MIMO Communications

Author(s): L. Wei, C. Huang, G.C. Alexandropoulos, Z. Yang, J. Yang, EI Wei, M. Debbah, C. Yuen
Published in: IEEE International Conference on Communications, 2023, ISSN 1938-1883
Publisher: IEEE
DOI: 10.48550/arxiv.2302.05337

Near-Field Localization With Extremely Large Scale Antenna Arrays in the Presence of Mutual Coupling

Author(s): Zohreh Ebadi, Amir Masoud Molaei, George C. Alexandropoulos, Muhammad Ali Babar Abbasi, Simon Cotton, Anvar Tukmanov, Okan Yurduseven
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999349

Memristor-Based 1-Bit Reconfigurable Intelligent Surface for 6G Communications at D-Band

Author(s): Mohamed Elsaid; Sofia I. Inácio; Henrique M. Salgado; Luís M. Pessoa
Published in: ICEAA 2024, 2024, ISSN 2766-2284
Publisher: IEEE
DOI: 10.1109/ICEAA61917.2024.10701868

Joint near-field target tracking and communications with full duplex holographic MIMO

Author(s): I. Gavras and G. C. Alexandropoulos
Published in: International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), 2024, ISSN 2379-190X
Publisher: IEEE
DOI: 10.48550/arXiv.2401.12036

Asymptotically Optimal Closed-Form Phase Configuration of 1-bit RISs via Sign Alignment

Author(s): K. Stylianopoulos, P. Gavriilidis, G. C. Alexandropoulos
Published in: IEEE SPAWC, 2024, ISSN 1948-3252
Publisher: IEEE
DOI: 10.48550/arXiv.2407.13510

Rate-Splitting Multiple Access for a Multi-RIS-Assisted Cell-Free Network with Low-Resolution DACs

Author(s): Mario R. Camana, Zaid Abdullah, Carla E. Garcia, Eva Lagunas, Symeon Chatzinotas
Published in: 2025 IEEE Wireless Communications and Networking Conference (WCNC), 2025
Publisher: IEEE
DOI: 10.1109/WCNC61545.2025.10978785

Near-field Focusing with Transmitarrays: Impact of Phase Quantization

Author(s): M. Defives, R. Sauleau, M. Arrebola and A. Clemente
Published in: International Conference on Electromagnetics in Advanced Applications, 2023, ISSN 2766-2284
Publisher: IEEE
DOI: 10.1109/ICEAA57318.2023.10297664

A Deep Learning Approach in RIS-based Indoor Localization

Author(s): Rafael A. Aguiar, Nuno Paulino, Luís M. Pessoa
Published in: 2024 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2024, ISSN 2575-4912
Publisher: IEEE
DOI: 10.48550/arXiv.2405.01965

A Gradient Descent Method for Phase Only Pattern synthesis of Irregular Subarray

Author(s): Yihan Ma, Qi Luo, Guangwei Yang
Published in: 2024 International Applied Computational Electromagnetics Society Symposium (ACES-China), 2024, ISBN 979-8-3503-5558-1
Publisher: IEEE
DOI: 10.1109/ACES-China62474.2024.10699638

Indoor Channel Characterization With Extremely Large Reconfigurable Intelligent Surfaces at 300 GHz

Author(s): Fabio Cardoso, Sérgio Matos, Luís M. Pessoa, George C. Alexandropoulos
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.48550/ARXIV.2501.12752

1-Bit Reconfigurable Intelligent Surface Unit Cell Based on Non-Volatile Technology at D-Band

Author(s): Mohamed Elsaid, Sanaa Finich, Henrique M. Salgado, Luis M. Pessoa
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999338

Adaptive Polynomial Chaos Expansion for Uncertainty Quantification of SubTHz Horn Antennas with Flat-Top Radiation Patterns

Author(s): Aristeides D Papadopoulos; Yihan Ma; Qi Luo; George C. Alexandropoulos
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.48550/arXiv.2404.04542

Evaluation of Switching Technologies for Reflective and Transmissive RISs at Sub-THZ Frequencies

Author(s): Sofia I. Inácio, Yihan Ma, Qi Luo, Luca Lucci, Awanish Kumar, José Luis Gonzalez Jimenez, Bruno Reig, Alexandre Siligaris, Denis Mercier, Jonas Deuermeier, Asal Kiazadeh, Verónica Lain-Rubio, Oleg Cojocari, Tung D. Phan, Ping Jack Soh, Sérgio Matos, George C. Alexandropoulos, Luís M. Pessoa, Antonio Clemente
Published in: 2025 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2025
Publisher: IEEE
DOI: 10.48550/ARXIV.2504.20175

A 57.6 Gb/s D-band point-to-point link based on real time baseband processors and transmissive RIS

Author(s): J.L. González-Jiménez, A. Hamani, A. Siligaris, F. Foglia Manzillo, A. Clemente, E. Pikasis, D. S. Kritharidis, E. D. Tsirbas, and E. C. Loghis
Published in: European Microwave Conference (EuMC 2024), 2024, ISBN 9782874870774
Publisher: IEEE
DOI: 10.23919/EUMC61614.2024.10732609

Multifunctional Dual-Band Metasurface-Based Transmit- and Reflect-Arrays at Sub-THz

Author(s): Bilal Ouardi, Ronan Sauleau, Antonio Clemente
Published in: 2025 19th European Conference on Antennas and Propagation (EuCAP), 2025
Publisher: IEEE
DOI: 10.23919/EUCAP63536.2025.10999744

Irregular Subarray with Gathered Elements for Sidelobe Suppression

Author(s): Yihan Ma; Qi Luo; Wei Liu; Steven Gao
Published in: European Conference on Antennas and Propagation (EuCAP 2024), 2024, ISSN 2164-3342
Publisher: IEEE
DOI: 10.23919/EuCAP60739.2024.10501492

Near-Field Multipath MIMO Channel Model for Imperfect Surface Reflection

Author(s): Mohamadreza Delbari, George C. Alexandropoulos, Robert Schober, H. Vincent Poor, Vahid Jamali
Published in: 2024 IEEE Globecom Workshops (GC Wkshps), 2025
Publisher: IEEE
DOI: 10.48550/ARXIV.2409.17041

Leaky Waveguide Antennas for Downlink Wideband THz Communications

Author(s): Gabay, Yaela; Shlezinger, Nir; Routtenberg, Tirza; Ghasempour, Yasaman; Alexandropoulos, George C.; Eldar, Yonina C.
Published in: International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), 2024, ISSN 2379-190X
Publisher: IEEE
DOI: 10.48550/arXiv.2312.08833

Peer reviewed articles (49)

Near-field channel modeling for holographic MIMO communications

Author(s): T. Gong, L. Wei, C. Huang, G. C. Alexandropoulos, M. Debbah, and C. Yuen
Published in: Wireless Communications Magazine, 2024, ISSN 1536-1284
Publisher: IEEE
DOI: 10.1109/MWC.005.2300457

Terahertz-Band Direction Finding With Beam-Split and Mutual Coupling Calibration

Author(s): A. M. Elbir, K. V. Mishra and S. Chatzinotas
Published in: Antennas and Wireless Propagation Letters, 2023, ISSN 1536-1225
Publisher: IEEE
DOI: 10.48550/arXiv.2309.03195

MIMO MAC Empowered by Reconfigurable Intelligent Surfaces: Capacity Region and Large System Analysis

Author(s): A. L. Moustakas and G. C. Alexandropoulos
Published in: Transactions on Wireless Communications, 2024, ISSN 1536-1276
Publisher: IEEE
DOI: 10.48550/arXiv.2410.07389

Near-Field Wideband Extremely Large-Scale MIMO Transmissions With Holographic Metasurface-Based Antenna Arrays

Author(s): Jie Xu, Li You, George C. Alexandropoulos, Xinping Yi, Wenjin Wang, Xiqi Gao
Published in: IEEE Transactions on Wireless Communications, Issue 23, 2024, ISSN 1536-1276
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2024.3387709

Near-Field Terahertz Communications: Model-Based and Model-Free Channel Estimation

Author(s): A. M. Elbir, W. Shi, A. K. Papazafeiropoulos, P. Kourtessis and S. Chatzinotas
Published in: IEEE Access, 2023, ISSN 2169-3536
Publisher: IEEE
DOI: 10.48550/arXiv.2302.04802

Sustainable Wireless Networks via Reconfigurable Intelligent Surfaces (RISs): Overview of the ETSI ISG RIS

Author(s): Ruiqi Liu, Shuang Zheng, Qingqing Wu, Yifan Jiang, Nan Zhang, Yuanwei Liu, Marco Di Renzo, George C. Alexandropoulos
Published in: IEEE Communications Standards Magazine, 2025, ISSN 2471-2825
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2406.05647

Reconfigurable Intelligent Surfaces for 6G: Emerging Hardware Architectures, Applications, and Open Challenges

Author(s): Ertugrul Basar, George C. Alexandropoulos, Yuanwei Liu, Qingqing Wu, Shi Jin, Chau Yuen, Octavia A. Dobre, and Robert Schober
Published in: Vehicular Technology Magazine, 2024, ISSN 1556-6072
Publisher: IEEE
DOI: 10.1109/MVT.2024.3415570

Low-Temperature Solution-Based Molybdenum Oxide Memristors

Author(s): Raquel Azevedo Martins; Emanuel Carlos; Asal Kiazadeh; Rodrigo Martins; Jonas Deuermeier
Published in: ACS Applied Engineering Materials, 2024, ISSN 2771-9545
Publisher: AmericanChemicalSociety
DOI: 10.1021/acsaenm.3c00535

Parallel and Distributed Hybrid Beamforming for Multicell Millimeter Wave MIMO Full Duplex

Author(s): C. K. Sheemar, S. Chatzinotas, D. Slock, E. Lagunas and J. Querol
Published in: Transactions on Vehicular Technology, 2024, ISSN 1939-9359
Publisher: IEEE
DOI: 10.48550/arXiv.2112.02335

Holographic MIMO Communications: Theoretical Foundations, Enabling Technologies, and Future Directions

Author(s): Gong, Tierui and Gavriilidis, Panagiotis and Ji, Ran and Huang, Chongwen and Alexandropoulos, George C. and Wei, Li and Zhang, Zhaoyang and Debbah, Mérouane and Poor, H. Vincent and Yuen, Chau
Published in: IEEE Communications Surveys & Tutorials, 2023, ISSN 1553-877X
Publisher: IEEE
DOI: 10.48550/ARXIV.2212.01257

Max-Min SINR Analysis of STAR-RIS Assisted Massive MIMO Systems with Hardware Impairments

Author(s): A. Papazafeiropoulos, P. Kourtessis and S. Chatzinotas
Published in: IEEE Transactions on Wireless Communications, 2023, ISSN 1558-2248
Publisher: IEEE
DOI: 10.1109/TWC.2023.3316707

Joint 3D user and 6D hybrid reconfigurable intelligent surface localization

Author(s): R. Ghazalian, G. C. Alexandropoulos, G. Seco-Granados, H. Wymeersch, and R. Jäntti
Published in: Transactions on Vehicular Technology, 2024, ISSN 0018-9545
Publisher: IEEE
DOI: 10.48550/arXiv.2401.03852

Design of a binary programmable transmitarray based on phase change material for beam steering applications in D-Band

Author(s): S. Gharbieh, J. Milbrandt, B. Reig, D. Mercier, M. Allain, and A. Clemente
Published in: Scientific Reports , 2024, ISSN 2045-2322
Publisher: Springer Nature
DOI: 10.1038/s41598-024-53150-9

Evolving Multi-Branch Attention Convolutional Neural Networks for Online RIS Configuration

Author(s): George Stamatelis, Kyriakos Stylianopoulos, George C. Alexandropoulos
Published in: IEEE Transactions on Cognitive Communications and Networking, 2025, ISSN 2332-7731
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2409.01765

Multi-RIS-Empowered Multiple Access: A Distributed Sum-Rate Maximization Approach

Author(s): K. D. Katsanos, P. D. Lorenzo and G. C. Alexandropoulos
Published in: Journal of Selected Topics in Signal Processing, 2024, ISSN 1932-4553
Publisher: IEEE
DOI: 10.1109/JSTSP.2024.3455102

Deep Learning Enables Multifunctional Metasurfaces Design With Mutual Coupling Estimation

Author(s): Yihan Ma, Qi Luo, Cheng Zhang, Guangwei Yang
Published in: IEEE Transactions on Antennas and Propagation, Issue 72, 2024, ISSN 0018-926X
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TAP.2024.3443151

Toward the Metaverse Realization in 6G: Orchestration of RIS-Enabled Smart Wireless Environments via Digital Twins

Author(s): A. Masaracchia, D. V. Huynh, G. C. Alexandropoulos, B. Canberk, O. A. Dobre, and T. Q. Duong
Published in: Internet of Things Magazine, 2024, ISSN 2576-3180
Publisher: IEEE
DOI: 10.1109/IOTM.001.2300128

Minimum Mean Squared Error Holographic Beamforming for Sum-Rate Maximization

Author(s): Chandan Kumar Sheemar, Wali Ullah Khan, George C. Alexandropoulos, Manzoor Ahmed, Symeon Chatzinotas
Published in: IEEE Wireless Communications Letters, 2025, ISSN 2162-2337
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2503.17205

Terahertz-Band Channel and Beam Split Estimation via Array Perturbation Model

Author(s): A. M. Elbir, W. Shi, A. K. Papazafeiropoulos, P. Kourtessis and S. Chatzinotas
Published in: Open Journal of the Communications Society, 2023, ISSN 2644-125X
Publisher: IEEE
DOI: 10.48550/arXiv.2208.03683

Metasurface Energy Harvesters: State-of-the-Art Designs and Their Potential for Energy Sustainable Reconfigurable Intelligent Surfaces

Author(s): A. Ghaneizadeh, P. Gavriilidis, M. Joodaki and G. C. Alexandropoulos
Published in: IEEE Access, 2024, ISSN 2169-3536
Publisher: IEEE
DOI: 10.1109/ACCESS.2024.3467702

Control Plane for Reconfigurable Intelligent Surfaces

Author(s): F. Saggese, V. Croisfelt, K. Stylianopoulos, G. C. Alexandropoulos and P. Popovski
Published in: Communications Standards Magazine, 2024, ISSN 2471-2825
Publisher: IEEE
DOI: 10.1109/MCOMSTD.0001.2400028

Near-Field Beam Tracking With Extremely Large Dynamic Metasurface Antennas

Author(s): Panagiotis Gavriilidis, George C. Alexandropoulos
Published in: IEEE Transactions on Wireless Communications, Issue 24, 2025, ISSN 1536-1276
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2406.01488

Full-Duplex Wireless for 6G: Progress Brings New Opportunities and Challenges

Author(s): B. Smida, A. Sabharwal, G. Fodor, G. C. Alexandropoulos, H. A. Suraweera and C. -B. Chae
Published in: IEEE Journal on Selected Areas in Communications, 2023, ISSN 1558-0008
Publisher: IEEE
DOI: 10.48550/arxiv.2304.08789

An Energy-Efficient 56-Gb/s D -Band TX-to-RX Link Using CMOS ICs and Transmitarray Antennas

Author(s): J. L. Gonzalez-Jimenez; A. Siligaris; A. Hamani; F. Foglia Manzillo; P. Courouve; N. Cassiau; C. Dehos; A. Clemente
Published in: Microwave and Wireless Technology Letters, 2024, ISSN 2771-9588
Publisher: IEEE
DOI: 10.1109/LMWT.2024.3395905

Hybrid reconfigurable intelligent metasurfaces: Enabling simultaneous tunable reflections and sensing for 6G wireless communications

Author(s): G. C. Alexandropoulos, N. Shlezinger, I. Alamzadeh, M. F. Imani, H. Zhang, and Y. C. Eldar
Published in: Vehicular Technology Magazine, 2023, ISSN 1556-6072
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/MVT.2023.3332580

Terahertz-Band Integrated Sensing and Communications: Challenges and Opportunities

Author(s): A. M. Elbir, K. V. Mishra, S. Chatzinotas and M. Bennis
Published in: Aerospace and Electronic Systems Magazine, 2024, ISSN 0885-8985
Publisher: IEEE
DOI: 10.48550/arXiv.2208.01235

Phase-Only Pattern Synthesis of Domino Tiling Irregular Arrays Based on Deep Reinforcement Learning and Gradient-Descent Optimization

Author(s): Yihan Ma, Yibing Guo, Qi Luo, Yonggang Zhou, Guangwei Yang, Steven Gao
Published in: IEEE Transactions on Antennas and Propagation, Issue 73, 2025, ISSN 0018-926X
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TAP.2025.3567185

Active Reconfigurable Intelligent Surfaces: Circuit Modeling and Reflection Amplification Optimization

Author(s): Panagiotis Gavriilidis, Deepak Mishra, Besma Smida, Ertugrul Basar, Chau Yuen, George C. Alexandropoulos
Published in: IEEE Open Journal of the Communications Society, Issue 6, 2025, ISSN 2644-125X
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2503.24093

A Simplified Method for Designing Highly-Efficient Reflective Metasurfaces with Wide Steering Angles

Author(s): Di Kong, Duy Tung Phan, Jaakko Palosaari, Jari Juuti, Aarno Pärssinen, Ping Jack Soh
Published in: Antennas and Propagation Letters, 2024, ISSN 1536-1225
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/LAWP.2024.3439328

Tri-Polarized Holographic MIMO Surfaces for Near-Field Communications: Channel Modeling and Precoding Design

Author(s): L. Wei, C. Huang, G.C. Alexandropoulos, Z. Yang, J. Yang, EI Wei, Z. Zhang, M. Debbah, C Yuen
Published in: IEEE Transactions on Wireless Communications, 2023, ISSN 1558-2248
Publisher: IEEE
DOI: 10.1109/TWC.2023.3266298

Integrated Sensing and Communications With Reconfigurable Intelligent Surfaces: From signal modeling to processing

Author(s): Sundeep Prabhakar Chepuri; Nir Shlezinger; Fan Liu; George C. Alexandropoulos; Stefano Buzzi; Yonina C. Eldar
Published in: Signal Processing Magazine, 2023, ISSN 1053-5888
Publisher: IEEE
DOI: 10.48550/arXiv.2211.01003

Printed Zinc Tin Oxide Memristors for Reservoir Computing

Author(s): Raquel Azevedo Martins, Carlos Silva, Jonas Deuermeier, Gianluca Milano, Mateo Rosero‐Realpe, Carolina Parreira, Elvira Fortunato, Rodrigo Martins, Asal Kiazadeh, Emanuel Carlos
Published in: Advanced Intelligent Systems, 2025, ISSN 2640-4567
Publisher: Wiley
DOI: 10.1002/AISY.202500450

Generalized Risley Prism for Beam-Steering Transmit Arrays With Reduced Grating Lobes

Author(s): Sérgio A. Matos; Nelson J. G. Fonseca; João C. Serra; João M. Felício; Jorge R. Costa; Carlos A. Fernandes
Published in: Transactions on Antennas and Propagation, 2023, ISSN 0018-926X
Publisher: IEEE
DOI: 10.1109/TAP.2023.3313230

Cooperative Backscatter Communications With Reconfigurable Intelligent Surfaces: An APSK Approach

Author(s): Qiang Li, Yehuai Feng, Miaowen Wen, Jinming Wen, George C. Alexandropoulos, Ertugrul Basar, H. Vincent Poor
Published in: IEEE Transactions on Wireless Communications, Issue 23, 2024, ISSN 1536-1276
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2024.3438874

Perspective: Zinc-Tin Oxide based Memristors for Sustainable and Flexible In-memory computing edge devices

Author(s): Carlos Silva, Jonas Deuermeier, Weidong Zhang, Emanuel Carlos, Pedro Barquinha, Rodrigo Martins, Asal Kiazadeh
Published in: Advanced Electronic Materials, 2023, ISSN 2199-160X
Publisher: Wiley
DOI: 10.1002/aelm.202300286

BSA-OMP- Beam-Split-Aware Orthogonal Matching Pursuit for THz Channel Estimation

Author(s): A. M. Elbir and S. Chatzinotas
Published in: Wireless Communications Letters, 2023, ISSN 2162-2337
Publisher: IEEE
DOI: 10.48550/arXiv.2302.02332

Inkjet printed IGZO memristors with volatile and non-volatile switching

Author(s): Miguel Franco, Asal Kiazadeh, Jonas Deuermeier, S. Lanceros-Méndez, Rodrigo Martins & Emanuel Carlos
Published in: Scientific Reports , 2024, ISSN 2045-2322
Publisher: Springer Nature
DOI: 10.1038/S41598-024-58228-Y

Indexed multiple access with reconfigurable intelligent surfaces: The reflection tuning potential

Author(s): R. Singh, A. Kaushik, W. Shin, G. C. Alexandropoulos, M. Toka, and M. Di Renzo
Published in: Communications Magazine, 2023, ISSN 0163-6804
Publisher: IEEE
DOI: 10.48550/arXiv.2302.07476

Near-Field Localization With Dynamic Metasurface Antennas at THz: A CRB Minimizing Approach

Author(s): Ioannis Gavras, George C. Alexandropoulos
Published in: IEEE Wireless Communications Letters, Issue 14, 2025, ISSN 2162-2337
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2502.16647

Stacked Intelligent Metasurfaces for Efficient Holographic MIMO Communications in 6G

Author(s): J. An, C. Xu, DWK Ng, G.C. Alexandropoulos, C. Huang, C. Yuen, L. Hanzo
Published in: IEEE Journal on Selected Areas in Communications, 2023, ISSN 1558-0008
Publisher: IEEE
DOI: 10.48550/arxiv.2305.08079

Unlocking Neuromorphic Vision: Advancements in IGZO-Based Optoelectronic Memristors with Visible Range Sensitivity

Author(s): Maria Elias Pereira, Jonas Deuermeier, Rodrigo Martins, Pedro Barquinha, and Asal Kiazadeh
Published in: Applied Electronic Materials, 2024, ISSN 2637-6113
Publisher: American Chemical Society
DOI: 10.1021/acsaelm.4c00752

Wideband sub-THz Reconfigurable Intelligent Surface Using Planar Tightly Coupled Dipoles

Author(s): Yonggang Zhou; Xianjun Ma; Qi Luo; Yihan Ma; George C. Alexandropoulos; Xinyu Yang
Published in: Antennas and Wireless Propagation Letters, 2024, ISSN 1536-1225
Publisher: Institute of Electrical and Electronics Engineers
DOI: 10.1109/LAWP.2024.3439020

On the Tacit Linearity Assumption in Common Cascaded Models of RIS-Parametrized Wireless Channels

Author(s): Antonin Rabault, Luc Le Magoarou, Jérôme Sol, George C. Alexandropoulos, Nir Shlezinger, H. Vincent Poor, Philipp del Hougne
Published in: Transactions on Wireless Communications, 2024, ISSN 1536-1276
Publisher: IEEE
DOI: 10.48550/arXiv.2302.04993

Near-Field Localization with Antenna Arrays in the Presence of Direction-Dependent Mutual Coupling

Author(s): Zohreh Ebadi, Amir Masoud Molaei, George C. Alexandropoulos, Muhammad Ali Babar Abbasi, Simon Cotton, Anvar Tukmanov, Okan Yurduseven
Published in: Transactions on Vehicular Technology, 2025, ISSN 0018-9545
Publisher: IEEE
DOI: 10.48550/ARXIV.2408.07202

Characterization of Indoor Reconfigurable Intelligent Surface-Assisted Channels at 304 GHz: Experimental Measurements, Challenges, and Future Directions

Author(s): George C. Alexandropoulos, Bo Kum Jung, Panagiotis Gavriilidis, Sérgio Matos, Lorenz H.W. Loeser, Varvara Elesina, Antonio Clemente, Raffaele D’Errico, Luís M. Pessoa, Thomas Kürner
Published in: IEEE Vehicular Technology Magazine, 2025, ISSN 1556-6072
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.48550/ARXIV.2412.07359

Recent progress in optoelectronic memristors for neuromorphic and in-memory computation

Author(s): Maria Elias Pereira, Rodrigo Martins, Elvira Fortunato, Pedro Barquinha and Asal Kiazadeh
Published in: Neuromorphic Computing and Engineering, 2023, ISSN 2634-4386
Publisher: IOP Publishing
DOI: 10.1088/2634-4386/acd4e2

Printed Memristors: An Overview of Ink, Materials, Deposition Techniques, and Applications

Author(s): Miguel Franco, Asal Kiazadeh, Rodrigo Martins, Senentxu Lanceros-Méndez, Emanuel Carlos
Published in: Advanced Electronic Materials, 2024, ISSN 2199-160X
Publisher: Wiley
DOI: 10.1002/aelm.202400212

Anomalous and specular reflections of reconfigurable intelligent surfaces: configuration strategies and system performances

Author(s): M. Merluzzi and A. Clemente
Published in: Wireless Communications Letters, 2024, ISSN 2162-2337
Publisher: IEEE
DOI: 10.1109/LWC.2024.3441933

RIS-Enabled and Access-Point-Free Simultaneous Radio Localization and Mapping

Author(s): Kim H, Chen H, Keskin MF, Ge Y, Keykhosravi K, Alexandropoulos GC, Kim S, Wymeersch H.
Published in: IEEE Transactions on Wireless Communications, 2023, ISSN 1558-2248
Publisher: IEEE
DOI: 10.1109/TWC.2023.3307455

Other (9)

Time-Domain Channel Estimation for Extremely Large MIMO THz Communications with Beam Squint

Author(s): George C. Alexandropoulos; Yonina C. Eldar; Aryan Kaushik; Evangelos Vlachos
Published in: IEEE Open Journal of the Communications Society, 2023
Publisher: IEEE
DOI: 10.36227/techrxiv.24310423.v1

Near-Field Multipath MIMO Channel Model for Imperfect Surface Reflection

Author(s): Mohamadreza Delbari, George C. Alexandropoulos, Robert Schober, H. Vincent Poor, Vahid Jamali
Published in: 2024
Publisher: arXiv
DOI: 10.48550/arXiv.2409.17041

Sustainability in SNS JU Projects - Targets, Methodologies, Trade-offs and Implementation Considerations Towards 6G Systems

Author(s): Rezaki, Ali; Trichias, Konstantinos; Mesodiakaki, Agapi; Gavras, Anastasius; Aseeva, Anna; Berardinelli, Gilberto; Osman, Hassan; Gutiérrez Terán, Jesús; Petersen, Katrina; Gramaglia, Marco; Katz, Marcos; Bezzi, Margot; Ghoraishi, Mir
Published in: 2025
Publisher: Zenodo
DOI: 10.5281/ZENODO.15555292

Simultaneous Communications and Sensing with Hybrid Reconfigurable Intelligent Surfaces

Author(s): Ioannis Gavras, George C. Alexandropoulos
Published in: 2024
Publisher: arXiv
DOI: 10.48550/arXiv.2410.15836

On the Detection of Non-Cooperative RISs: Scan B-Testing via Deep Support Vector Data Description

Author(s): George Stamatelis, Panagiotis Gavriilidis, Aymen Fakhreddine, George C. Alexandropoulos
Published in: 2024
Publisher: arXiv
DOI: 10.48550/arXiv.2411.03237

Circuit-Compliant Optimization of Dynamic Metasurface Antennas for Near-Field Localization

Author(s): Ioannis Gavras, George C. Alexandropoulos
Published in: 2024
Publisher: arXiv
DOI: 10.48550/arXiv.2411.09362

Multi-Branch Attention Convolutional Neural Network for Online RIS Configuration with Discrete Responses: A Neuroevolution Approach

Author(s): George Stamatelis, Kyriakos Stylianopoulos, George C. Alexandropoulos
Published in: 2024
Publisher: arXiv
DOI: 10.48550/arXiv.2409.01765

Characterization of Indoor RIS-Assisted Channels at 304 GHz: Experimental Measurements, Challenges, and Future Directions

Author(s): George C. Alexandropoulos, Bo Kum Jung, Panagiotis Gavriilidis, Sérgio Matos, Lorenz H. W. Loeser, Varvara Elesina, Antonio Clemente, Raffaele D'Errico, Luís M. Pessoa, Thomas Kürner
Published in: 2024
Publisher: IEEE
DOI: 10.48550/arXiv.2412.07359

AI/ML as a Key Enabler of 6G Networks: Methodology, Approach and AI-Mechanisms in SNS JU

Author(s): Trichias, Konstantinos; Christopoulou, Maria; Porambage, Pawani; Benzaid, Chafika; Vassiliou, Vasos; Artuñedo Guillén, David; Tsolkas, Dimitris; Avgeris, Marios; Papagianni, Chrysa; Jain, Akshay; Kilper, Daniel; Chen, Tao
Published in: 2025
Publisher: Zenodo
DOI: 10.5281/ZENODO.14623106

Book chapters (2)

Far- versus Near-Field RIS Modeling and Beam Design

Author(s): M. Delbari, G. C. Alexandropoulos, R. Schober, and V. Jamali
Published in: 2024
Publisher: Springer
DOI: 10.48550/ARXIV.2401.08237

Beamforming architectures for integrated sensing and communications in millimeter-wave and terahertz

Author(s): Ahmet M. Elbir, Symeon Chatzinotas
Published in: 2025
Publisher: Academic Press
DOI: 10.1016/B978-0-44-322143-9.00021-7

Intellectual Property Rights

Patent (1)

Cellule d’antenne à réseau transmetteur

Application/Publication number: 23 01423
Date: 2023-02-15
Applicant(s): COMMISSARIAT A L ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES