26 citations · 74 across the 33 of their papers we have counts for
17 papers · 1 filter
On the Deployment of Multiple Radio Stripes for Large-Scale Near-Field RF Wireless Power Transfer
Amirhossein Azarbahram, Onel L. A. López, Petar Popovski +1
This paper investigates the deployment of radio stripe systems for indoor radio-frequency (RF) wireless power transfer (WPT) in line-of-sight near-field scenarios. The focus is on…
6G Resilience -- White Paper
Hirley Alves, Nurul H. Mahmood, Onel L. A. López +36
6G must be designed to withstand, adapt to, and evolve amid prolonged, complex disruptions. Mobile networks' shift from efficiency-first to sustainability-aware has motivated this…
Sense-then-Charge: Wireless Power Transfer to Unresponsive Devices with Unknown Location
Amirhossein Azarbahram, Onel L. A. López, Richard D. Souza +2
This paper explores a multi-antenna dual-functional radio frequency (RF) wireless power transfer (WPT) and radar system to charge multiple unresponsive devices. We formulate a beam…
Beamforming and Waveform Optimization for RF Wireless Power Transfer with Beyond Diagonal Reconfigurable Intelligent Surfaces
Amirhossein Azarbahram, Onel L. A. Lopez, Bruno Clerckx +2
Radio frequency (RF) wireless power transfer (WPT) is a promising technology to seamlessly charge low-power devices, but its low end-to-end power transfer efficiency remains a crit…
Beyond Diagonal Reconfigurable Intelligent Surfaces for Multi-Carrier RF Wireless Power Transfer
Amirhossein Azarbahram, Onel L. A. López, Bruno Clerckx +2
Radio frequency (RF) wireless power transfer (WPT) is promising for promoting sustainability in future wireless systems, but its low end-to-end power transfer efficiency is a criti…
A Study on Characterization of Near-Field Sub-Regions For Phased-Array Antennas
Mehdi Monemi, Sirous Bahrami, Mehdi Rasti +1
We characterize three near-field sub-regions for phased array antennas by elaborating on the boundaries {\it Fraunhofer}, {\it radial-focal}, and {\it non-radiating} distances. The…
Revisiting the Fraunhofer and Fresnel Boundaries for Phased Array Antennas
Mehdi Monemi, Mehdi Rasti, Matti Latva-aho
This paper presents the characterization of near-field propagation regions for phased array antennas, with a particular focus on the propagation boundaries defined by Fraunhofer an…
Malicious RIS Meets RSMA: Unveiling the Robustness of Rate Splitting to RIS-Induced Attacks
A. S. de Sena, A. Gomes, J. Kibiłda +3
While the robustness of rate-splitting multiple access (RSMA) to imperfect channel state information (CSI) is well-documented, its susceptibility to attacks launched with malicious…
End-to-End Waveform and Beamforming Optimization for RF Wireless Power Transfer
Abdul Basit Khattak, Onel L. A. López, Amirhossein Azarbahram +2
Radio frequency (RF) wireless power transfer (WPT) is a key technology for future low-power wireless systems. However, the inherently low end-to-end power transfer efficiency (PTE)…
Deep Reinforcement Learning for Multi-User RF Charging with Non-linear Energy Harvesters
Amirhossein Azarbahram, Onel L. A. López, Petar Popovski +2
Radio frequency (RF) wireless power transfer (WPT) is a promising technology for sustainable support of massive Internet of Things (IoT). However, RF-WPT systems are characterized…
Near-Field Spot Beamfocusing: A Correlation-Aware Transfer Learning Approach
Mohammad Amir Fallah, Mehdi Monemi, Mehdi Rasti +1
Three-dimensional (3D) spot beamfocusing (SBF), in contrast to conventional angular-domain beamforming, concentrates radiating power within a very small volume in both radial and a…
Malicious RIS versus Massive MIMO: Securing Multiple Access against RIS-based Jamming Attacks
Arthur Sousa de Sena, Jacek Kibilda, Nurul Huda Mahmood +2
In this letter, we study an attack that leverages a reconfigurable intelligent surface (RIS) to induce harmful interference toward multiple users in massive multiple-input multiple…
Beyond Diagonal RIS for Multi-Band Multi-Cell MIMO Networks: A Practical Frequency-Dependent Model and Performance Analysis
Arthur S. de Sena, Mehdi Rasti, Nurul H. Mahmood +1
This paper delves into the unexplored frequency-dependent characteristics of beyond diagonal reconfigurable intelligent surfaces (BD-RISs). A generalized practical frequency-depend…
GDOP Based BS Selection for Positioning in mmWave 5G NR Networks
A. Indika Perera, K. B. Shashika Manosha, Nandana Rajatheva +1
The fifth-generation (5G) of mobile communication supported by millimetre-wave (mmWave) technology and higher base station (BS) densification facilitate to enhance user equipment (…
On the Radio Stripe Deployment for Indoor RF Wireless Power Transfer
Amirhossein Azarbahram, Onel L. A. Lopez, Petar Popovski +1
One of the primary goals of future wireless systems is to foster sustainability, for which, radio frequency (RF) wireless power transfer (WPT) is considered a key technology enable…
Decomposition Based Interference Management Framework for Local 6G Networks
Samitha Gunarathne, Thushan Sivalingam, Nurul Huda Mahmood +2
Managing inter-cell interference is among the major challenges in a wireless network, more so when strict quality of service needs to be guaranteed such as in ultra-reliable low la…
Waveform Optimization and Beam Focusing for Near-field Wireless Power Transfer with Dynamic Metasurface Antennas and Non-linear Energy Harvesters
Amirhossein Azarbahram, Onel L. A. López, Matti Latva-Aho
Radio frequency (RF) wireless power transfer (WPT) is a promising technology for future wireless systems. However, the low power transfer efficiency (PTE) is a critical challenge f…