Matti Latva‐aho
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View article: Beamforming and Waveform Optimization for RF Wireless Power Transfer With Beyond Diagonal Reconfigurable Intelligent Surfaces
Beamforming and Waveform Optimization for RF Wireless Power Transfer With Beyond Diagonal Reconfigurable Intelligent Surfaces Open
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 critical challenge. To address the latter, low-cost transmit/ra…
View article: 6G Resilience -- White Paper
6G Resilience -- White Paper Open
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 white paper to assert that resilience is a primary design g…
View article: On the Deployment of Multiple Radio Stripes for Large-Scale Near-Field RF Wireless Power Transfer
On the Deployment of Multiple Radio Stripes for Large-Scale Near-Field RF Wireless Power Transfer Open
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 environments where energy demand is concentrated in specifi…
View article: End-to-End Joint Waveform and Beamforming Optimization for RF Wireless Power Transfer with Hybrid Transmit Architecture and Non-Linear Energy Harvesters
End-to-End Joint Waveform and Beamforming Optimization for RF Wireless Power Transfer with Hybrid Transmit Architecture and Non-Linear Energy Harvesters Open
Radio frequency (RF) wireless power transfer (WPT) is an appealing technology to provide sustainable and cost-efficent power supply to low-power devices in future wireless systems. However, the inherently low end-to-end power transfer effi…
View article: Beam Squint Mitigation in Wideband Hybrid Beamformers: Full-TTD, Sparse-TTD, or Non-TTD?
Beam Squint Mitigation in Wideband Hybrid Beamformers: Full-TTD, Sparse-TTD, or Non-TTD? Open
Beam squint poses a fundamental challenge in wideband hybrid beamforming, particularly for mmWave and THz systems that demand both ultra-wide bandwidth and high directional beams. While conventional phase shifter-based beamformers may offe…
View article: AI-Native 6G Networks: The 6GARROW Integrated Device-Network Approach
AI-Native 6G Networks: The 6GARROW Integrated Device-Network Approach Open
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View article: On the Robustness of RSMA to Adversarial BD-RIS-Induced Interference
On the Robustness of RSMA to Adversarial BD-RIS-Induced Interference Open
This article investigates the robustness of rate-splitting multiple access (RSMA) in multi-user multiple-input single-output (MISO) systems to interference attacks against channel acquisition induced by beyond-diagonal RISs (BD-RISs). Two …
View article: Sense-then-Charge: Wireless Power Transfer to Unresponsive Devices with Unknown Location
Sense-then-Charge: Wireless Power Transfer to Unresponsive Devices with Unknown Location Open
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 beamforming problem to maximize the minimum received power at t…
View article: Vessel Length Estimation from Magnetic Wake Signature: A Physics-Informed Residual Neural Network Approach
Vessel Length Estimation from Magnetic Wake Signature: A Physics-Informed Residual Neural Network Approach Open
Marine remote sensing enhances maritime surveillance, environmental monitoring, and naval operations. Vessel length estimation, a key component of this technology, supports effective maritime surveillance by empowering features such as ves…
View article: Beyond Diagonal Reconfigurable Intelligent Surfaces for Multi-Carrier RF Wireless Power Transfer
Beyond Diagonal Reconfigurable Intelligent Surfaces for Multi-Carrier RF Wireless Power Transfer Open
International audience
View article: Highly Dynamic and Flexible Spatio-Temporal Spectrum Management with AI-Driven O-RAN: A Multi-Granularity Marketplace Framework
Highly Dynamic and Flexible Spatio-Temporal Spectrum Management with AI-Driven O-RAN: A Multi-Granularity Marketplace Framework Open
Current spectrum-sharing frameworks struggle with adaptability, often being either static or insufficiently dynamic. They primarily emphasize temporal sharing while overlooking spatial and spectral dimensions. We propose an adaptive, AI-dr…
View article: Higher-Order Meta Distribution Analysis of Wireless Systems with Application to the Reliability of UWB THz Networks
Higher-Order Meta Distribution Analysis of Wireless Systems with Application to the Reliability of UWB THz Networks Open
Communication reliability, as defined by 3GPP, refers to the probability of providing a desired quality of service (QoS). This metric is typically quantified for wireless networks by averaging the QoS success indicator over spatial and tem…
View article: Uplink Rate Splitting Multiple Access with Imperfect Channel State Information and Interference Cancellation
Uplink Rate Splitting Multiple Access with Imperfect Channel State Information and Interference Cancellation Open
This article investigates the performance of uplink rate splitting multiple access (RSMA) in a two-user scenario, addressing an under-explored domain compared to its downlink counterpart. With the increasing demand for uplink communication…
View article: Higher-Order Meta Distribution Reliability Analysis of Wireless Networks
Higher-Order Meta Distribution Reliability Analysis of Wireless Networks Open
Communication reliability, as defined by 3GPP, is the probability of achieving a desired quality of service (QoS). Traditionally, this metric is evaluated by averaging the QoS success indicator over spatiotemporal random variables. Recentl…
View article: Interference Prediction Using Gaussian Process Regression and Management Framework for Critical Services in Local 6G Networks
Interference Prediction Using Gaussian Process Regression and Management Framework for Critical Services in Local 6G Networks Open
Interference prediction and resource allocation are critical challenges in mission-critical applications where stringent latency and reliability constraints must be met. This paper proposes a novel Gaussian process regression (GPR)-based f…
View article: Performance Analysis of Active RIS-Assisted Downlink NOMA With Transmit Antenna Selection
Performance Analysis of Active RIS-Assisted Downlink NOMA With Transmit Antenna Selection Open
Active reconfigurable intelligent surfaces (RISs) overcome the severe multiplicative fading effect observed in conventional passive RIS-assisted systems by amplifying the reflected signal. This paper investigates the performance of an acti…
View article: Beyond Diagonal Reconfigurable Intelligent Surfaces for Multi-Carrier RF Wireless Power Transfer
Beyond Diagonal Reconfigurable Intelligent Surfaces for Multi-Carrier RF Wireless Power Transfer Open
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 critical challenge. For this, reconfigurable intelligent surface…
View article: Max-Min Fairness for Stacked Intelligent Metasurface-Assisted Multi-User MISO Systems
Max-Min Fairness for Stacked Intelligent Metasurface-Assisted Multi-User MISO Systems Open
Stacked intelligent metasurface (SIM) is an emerging technology that uses multiple reconfigurable surface layers to enable flexible wave-based beamforming. In this paper, we focus on an SIM-assisted multi-user multiple-input single-output …