A consolidated and accessible security proof for finite-size decoy-state quantum key distribution
In recent years, quantum key distribution (QKD) has evolved from a scientific research field to a commercially available security solution, supported by mathematically formulated security proofs. However, since the knowledge required for a full...
Ambient Intelligence in Intensive Care Units of the Future
This paper introduces ambient assistance for ICU environments. A user study shows that it enables room monitoring, supports examinations, and offers a proxemics-aware interface in an usable manner.
Robust Angular Power Spectrum Estimation in Massive MIMO Under Covariance Errors: Adapting Gaussian Centers and Scales to Time-Varying Environments
Important applications in Massive MIMO needs accurate angular power spectrum (APS) estimates, but covariance errors and changing channels make that difficult. This study presents an adaptive multikernel approach that models the APS as a sum of...
6G upper mid-band independently controllable dual-polarized reconfigurable intelligent surface (RIS)
A dual-polarized RIS unit cell for the 6G upper mid-band is presented and experimentally validated using a 3x3 prototype. The proposed design enables independent control of orthogonal polarizations while maintaining high isolation, demonstrating...
Joint Power Control, Beamforming and Time-Sharing in Cell-Free Massive MIMO Networks
This paper addresses long-term joint power control, beamforming and scheduling in overloaded cell-free MIMO systems, where the number of users exceeds the spatial degrees of freedom, to increase the minimum user rate and provide some power...
6G Upper-Mid Band Independently Controllable Dual-Polarized Reconfigurable Intelligent Surface: Design, Prototyping and Measurements
This work presents a complete 16x16 dual-polarized RIS platform for the 6G upper mid-band, covering unit-cell design, full-wave simulation, prototype fabrication, control-board implementation, and experimental characterization. The measured...
A Joint Channel Estimation and Beamforming Separation Principle for Massive MIMO Systems
Can we improve the performance of next generation massive MIMO systems by merging channel estimation and beamforming, perhaps with the help of AI methods? This paper provides precise mathematical guidelines that help identiying practical regimes...
Integrated Distributed Acoustic Sensing and Communication in Coherent Passive Optical Network Transceiver Using Digital Subcarrier Multiplexing
We present a comprehensive experimental and numerical investigation of integrated sensing and communication systems for coherent passive optical networks, wherein distributed acoustic sensing probes are digitally multiplexed in downstream...
Dataset design and analysis for ML-assisted performance evaluation in QKD networks
Progress in monitoring and performance analysis in quantum key distribution (QKD) networks has been influenced by the limited availability of well-structured and publicly accessible datasets. As a result, this limitation forces researchers to...
Demonstration of Self-Healing in IPoWDM Network with Dual Protection Using MBoSDM and NetDevOps Solutions in Support of 6G
We demonstrate autonomous self-healing in an IPoWDM network testbed comprising commercial equipment and MBoSDM prototype. We measured service provisioning time of under one minute and healing time of under 30 seconds in the considered usecase.