Outputs and Results

Outputs and Results

Power Scalability Modeling of Reconfigurable Intelligent Surfaces for THz Applications

January 23, 2025

P. N. Vummadisetty, J. Andres Vasquez-Peralvo, S. Chatzinotas, J. C. Merlano Duncan, A. Zorkun and T. Phan, “Power Scalability Modeling of Reconfigurable Intelligent Surfaces for THz Applications,” 2024 International Symposium on Antennas and Propagation (ISAP), Incheon, Korea, Republic of, 2024, pp. 1-2, January 2025

DOI:10.1109/ISAP62502.2024.10846560

Initial Assessment of THz Indoor Channel with Passive Reflective Intelligent Surfaces

January 23, 2025

B. K. Jung, V. V. Elesina, S. Matos, R. D’Errico and T. Kürner, “Initial Assessment of THz Indoor Channel with Passive Reflective Intelligent Surfaces,” 2024 International Symposium on Antennas and Propagation (ISAP), Incheon, Korea, Republic of, 2024, pp. 1-2, January 2025

DOI:10.1109/ISAP62502.2024.10846784

Dual Dielectric Metasurface for Simultaneous Sensing and Reconfigurable Reflections

January 23, 2025

Mahesh Birari, Deepak Singh Nagarkoti, Anestis Katsounaros, Hruday Kumar Reddy Mudireddy, Jagannath Malik, George C. Alexandropoulos, “Dual Dielectric Metasurface for Simultaneous Sensing and Reconfigurable Reflections,” arXiv preprint (to be presented in EuCAP 2025), January 2025

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

January 23, 2025

B. K. Jung and T. Kürner, “Impact of Safety Angle on Channel Capacity in THz X-Haul Links,” 2024 International Symposium on Antennas and Propagation (ISAP), Incheon, Korea, Republic of, 2024, pp. 1-2, January 2025

DOI:10.1109/ISAP62502.2024.10846774

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

January 23, 2025

A. E. Zorkun, J. Andres Vasquez Peralvo, P. N. Vummadisetty and S. Chatzinotas, “RIS Subset Selection/Assignment Based on Multi-Armed Bandit in Multi-RIS-Aided Communications,” 2024 International Symposium on Antennas and Propagation (ISAP), Incheon, Korea, Republic of, 2024, pp. 1-2, January 2025

DOI:10.1109/ISAP62502.2024.10846175

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

January 22, 2025

Fabio Cardoso, Sérgio Matos, Luís M. Pessoa, George C. Alexandropoulos, “Indoor Channel Characterization with Extremely Large Reconfigurable Intelligent Surfaces at 300 GHz,” arXiv preprint (to be presented in EuCAP 2025), January 2025

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

January 17, 2025

Ahmet M. Elbir, Symeon Chatzinotas, “Chapter 11 – Beamforming architectures for integrated sensing and communications in millimeter-wave and terahertz,” Integrated Sensing and Communications for Future Wireless Networks, Academic Press, 2025, pages 283-302, January 2025

DOI:10.1016/B978-0-44-322143-9.00021-7

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

January 15, 2025

Zohreh Ebadi, Amir Masoud Molaei, George C. Alexandropoulos, Muhammad Ali Babar Abbasi, Simon Cotton, Anvar Tukmanov, and Okan Yurduseven, “Near-Field Localization with Antenna Arrays in the Presence of Direction-Dependent Mutual Coupling,” in IEEE Transactions on Vehicular Technology, January 2025.

DOI:10.1109/TVT.2025.3530166

Holographic Metasurfaces Enabling Wave Computing for 6G: Status Overview, Challenges, and Future Research Trends

January 9, 2025

Zahra Rahimian Omam, Hamidreza Taghvaee, Ali Araghi, Maria Garcia-Fernandez, Guillermo Alvarez-Narciandi, George C. Alexandropoulos, Okan Yurduseven, Mohsen Khalily, “Holographic Metasurfaces Enabling Wave Computing for 6G: Status Overview, Challenges, and Future Research Trends,” arXiv preprint, January 2025

Control Plane for Reconfigurable Intelligent Surfaces

December 16, 2024

F. Saggese, V. Croisfelt, K. Stylianopoulos, G. C. Alexandropoulos and P. Popovski, “Control Plane for Reconfigurable Intelligent Surfaces,” in IEEE Communications Standards Magazine, vol. 8, no. 4, pp. 24-30, December 2024

DOI:10.1109/MCOMSTD.0001.2400028

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

December 10, 2024

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, “Characterization of Indoor RIS-Assisted Channels at 304 GHz: Experimental Measurements, Challenges, and Future Directions,” arXiv preprint (submitted to an IEEE magazine), December 2024.

European Vision for the 6G Network Ecosystem (white paper)

November 24, 2024

Uusitalo, Mikko, Carlos Jesus Bernardos, Alexandros Kaloxylos, Didier Arnaud Bourse, Toon Norp, Håkon Lønsethagen, Artur Hecker, Patrik Rugeland, Chrysa Papagianni, and Ömer Bulakci. “European Vision for the 6G Network Ecosystem.” Zenodo, November 2024.

DOI:10.5281/zenodo.13708424

Simultaneous Communications and Sensing with Hybrid Reconfigurable Intelligent Surfaces

November 14, 2024

Ioannis Gavras, George C. Alexandropoulos, “Simultaneous Communications and Sensing with Hybrid Reconfigurable Intelligent Surfaces”, arXiv preprint, November 2024

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

November 14, 2024

Ioannis Gavras, George C. Alexandropoulos, “Circuit-Compliant Optimization of Dynamic Metasurface Antennas for Near-Field Localization”, arXiv preprint, November 2024

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

November 5, 2024

George Stamatelis, Panagiotis Gavriilidis, Aymen Fakhreddine, George C. Alexandropoulos, “On the Detection of Non-Cooperative RISs: Scan B-Testing via Deep Support Vector Data Description”, arXiv preprint (submitted to an IEEE conference), November 2024

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

November 4, 2024

C. K. Sheemar, S. Chatzinotas, D. Slock, E. Lagunas and J. Querol, “Parallel and Distributed Hybrid Beamforming for Multicell Millimeter Wave MIMO Full Duplex,” in IEEE Transactions on Vehicular Technology, October 2024.

DOI:10.1109/TVT.2024.3488956

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

October 31, 2024

J. L. González-Jiménez et al., “A 57.6 Gb/s D-band point-to-point link based on real time baseband processors and transmissive RIS,” 2024 54th European Microwave Conference (EuMC), Paris, France, 2024, pp. 409-412, October 2024.

DOI:10.23919/EuMC61614.2024.10732609

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

October 22, 2024

A. L. Moustakas and G. C. Alexandropoulos, “MIMO MAC Empowered by Reconfigurable Intelligent Surfaces: Capacity Region and Large System Analysis,” in IEEE Transactions on Wireless Communications, October 2024

DOI:10.1109/TWC.2024.3480984

Terahertz-Band Integrated Sensing and Communications: Challenges and Opportunities

October 8, 2024

A. M. Elbir, K. V. Mishra, S. Chatzinotas and M. Bennis, “Terahertz-Band Integrated Sensing and Communications: Challenges and Opportunities,” in IEEE Aerospace and Electronic Systems Magazine, October 2024

DOI:10.1109/MAES.2024.3476228

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

October 8, 2024

M. Elsaid, S. I. Inácio, H. M. Salgado and L. M. Pessoa, “Memristor-Based 1-Bit Reconfigurable Intelligent Surface for 6G Communications at D-Band,” 2024 International Conference on Electromagnetics in Advanced Applications (ICEAA), Lisbon, Portugal, 2024, pp. 694-699, October 2024.

DOI:10.1109/ICEAA61917.2024.10701868

Reconfigurable Intelligent Surfaces for THz: Hardware Impairments and Switching Technologies

October 8, 2024

Sérgio Matos, Yihan Ma, Qi Luo, Jonas Deuermeier, Luca Lucci, Panagiotis Gavriilidis, Asal Kiazadeh, Verónica Lain-Rubio, Tung D. Phan, Ping Jack Soh, Antonio Clemente, Luís M. Pessoa, and George C. Alexandropoulos, “Reconfigurable Intelligent Surfaces for THz: Hardware Impairments and Switching Technologies,” 2024 International Conference on Electromagnetics in Advanced Applications (ICEAA), Lisbon, Portugal, October 2024

DOI:10.1109/ICEAA61917.2024.10701743

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

October 8, 2024

T. E. S. Oliveira, J. R. Reis, I. Cuiñas and R. F. S. Caldeirinha, “A Novel Wideband 1-bit Reconfigurable Intelligent Surface Design for 26 GHz,” 2024 International Conference on Electromagnetics in Advanced Applications (ICEAA), Lisbon, Portugal, 2024, pp. 613-616, October 2024.

DOI:10.1109/ICEAA61917.2024.10701781

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

October 8, 2024

B. Ouardi, R. Sauleau and A. Clemente, “Dual-Band Frequency Selective Surface in Quartz for Transmitarray Applications at Sub-THz,” 2024 International Conference on Electromagnetics in Advanced Applications (ICEAA), Lisbon, Portugal, October 2024

DOI:10.1109/ICEAA61917.2024.10701638

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

October 7, 2024

Kyriakos Stylianopoulos, Panagiotis Gavriilidis, and George C. Alexandropoulos, “Asymptotically Optimal Closed-Form Phase Configuration of 1-bit RISs via Sign Alignment,” 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Lucca, Italy, October 2024

DOI:10.1109/SPAWC60668.2024.10694052

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

October 7, 2024

I. Gavras and G. C. Alexandropoulos, “Simultaneous Near-Field THz Communications and Sensing with Full Duplex Metasurface Transceivers,” 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Lucca, Italy, October 2024

DOI:10.1109/SPAWC60668.2024.10694467

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

October 7, 2024

B. K. Jung and T. Kürner, “Energy Efficient Interference Management For THz X-Haul Using Reconfigurable Intelligent Surfaces,” 2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Perth, Australia, 2024, pp. 1-2,  October 2024.

DOI:10.1109/IRMMW-THz60956.2024.10697896

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

October 4, 2024

Y. Ma, Q. Luo and G. Yang, “A Gradient Descent Method for Phase Only Pattern synthesis of Irregular Subarray,” 2024 International Applied Computational Electromagnetics Society Symposium (ACES-China), Xi’an, China, October 2024

DOI:10.1109/ACES-China62474.2024.10699638

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

September 30, 2024

D. Kong, D. T. Phan, J. Palosaari, J. Juuti, A. Pärssinen and P. J. Soh, “Initial Study of a Sub-THz Reconfigurable Reflector Using Actuated Liquid Metal Droplet,” 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, September 2024

DOI:10.1109/AP-S/INC-USNC-URSI52054.2024.10685964

Scalability Analysis of Reflective Intelligent Surfaces at THz Frequencies

September 30, 2024

J. A. Vàsquez-Peralvo, P. N. Vummadisetty and S. Chatzinotas, “Scalability Analysis of Reflective Intelligent Surfaces at THz Frequencies,” 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, September 2024

DOI:10.1109/AP-S/INC-USNC-URSI52054.2024.10686964

Numerical Tool for the Analysis and Synthesis of Transmitarrays in Fresnel Region

September 30, 2024

M. Defives, R. Sauleau, and A. Clemente, “Numerical Tool for the Analysis and Synthesis of Transmitarrays in Fresnel Region,” 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, September 2024

DOI:10.1109/AP-S/INC-USNC-URSI52054.2024.10685999

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

September 30, 2024

S. A. Matos, N. J. G. Fonseca, J. C. Serra, J. Felicio, J. Costa, and C. Femandes, “Revisiting Risley Prism Transmit-Array Antennas Using a Novel Co-Design Phase Correction Approach,” 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, 2024, pp. 561-562, September 2024

DOI:10.1109/AP-S/INC-USNC-URSI52054.2024.10686650

Dual-band unit cell for electronically reconfigurable reflectarrays at mmWave

September 30, 2024

M. Bouslama and A. Clemente, “Dual-Band Unit Cell for Electronically Reconfigurable Reflectarrays at mmWave,” 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), Firenze, Italy, September 2024

DOI:10.1109/AP-S/INC-USNC-URSI52054.2024.10686317

Near-Field Multipath MIMO Channel Model for Imperfect Surface Reflection

September 25, 2024

Mohamadreza Delbari, George C. Alexandropoulos, Robert Schober, H. Vincent Poor, Vahid Jamali, “Near-Field Multipath MIMO Channel Model for Imperfect Surface Reflection”, arXiv preprint, September 2024

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

September 25, 2024

A. Ghaneizadeh, P. Gavriilidis, M. Joodaki and G. C. Alexandropoulos, “Metasurface Energy Harvesters: State-of-the-Art Designs and Their Potential for Energy Sustainable Reconfigurable Intelligent Surfaces,” in IEEE Access, September 2024.

DOI:10.1109/ACCESS.2024.3467702

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

September 9, 2024

K. D. Katsanos, P. D. Lorenzo and G. C. Alexandropoulos, “Multi-RIS-Empowered Multiple Access: A Distributed Sum-Rate Maximization Approach,” in IEEE Journal of Selected Topics in Signal Processing, September 2024

DOI:10.1109/JSTSP.2024.3455102

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

September 3, 2024

George Stamatelis, Kyriakos Stylianopoulos, George C. Alexandropoulos, “Multi-Branch Attention Convolutional Neural Network for Online RIS Configuration with Discrete Responses: A Neuroevolution Approach”, arXiv preprint, September 2024

Deep Learning Enables Multifunctional Metasurfaces Design With Mutual Coupling Estimation

August 19, 2024

Y. Ma, Q. Luo, C. Zhang and G. Yang, “Deep Learning Enables Multifunctional Metasurfaces Design With Mutual Coupling Estimation,” in IEEE Transactions on Antennas and Propagation, vol. 72, no. 11, pp. 8443-8451, August 2024

DOI:10.1109/TAP.2024.3443151

Cooperative Backscatter Communications with Reconfigurable Intelligent Surfaces: An APSK Approach

August 13, 2024

Li, Qiang, Yehuai Feng, Miaowen Wen, Jinming Wen, George C. Alexandropoulos, Ertugrul Basar, and H. Vincent Poor, “Cooperative Backscatter Communications with Reconfigurable Intelligent Surfaces: An APSK Approach,” in IEEE Transactions on Wireless Communications, August 2024

DOI:10.1109/TWC.2024.3438874

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

August 12, 2024

M. Merluzzi and A. Clemente, “Anomalous and Specular Reflections of Reconfigurable Intelligent Surfaces: Configuration Strategies and System Performance,” in IEEE Wireless Communications Letters, August 2024

DOI:10.1109/LWC.2024.3441933

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

August 6, 2024

Y. Zhou, X. Ma, Q. Luo, Y. Ma, G. C. Alexandropoulos and X. Yang, “Wideband sub-THz Reconfigurable Intelligent Surface Using Planar Tightly Coupled Dipoles,” in IEEE Antennas and Wireless Propagation Letters, August 2024

DOI:10.1109/LAWP.2024.3439020