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.
Experimental Validation of Lightpath Operation based on Continuous Digital-Twin Model Tuning
A complete digital twin-assisted lightpath operation workflow for multiband optical networks is proposed for assured performance and reliable surveillance. Accurate performance estimation and prompt degradation detection through continuous model...
Machine Learning Assisted Digital Twin Framework for Improved EDFA Gain and QoT Estimation
We propose a hybrid digital twin using GNPy with ML-assisted EDFA models for accurate QoT estimation. The models achieve sub-0.1dB gain error, enhancing data ef ficiency and improving end-to-end lightpath signal-to-noise ratio estimation within...
Digital Self-Interference Cancellation Using Kernel Adaptive Filtering in Hilbert Spaces
Can full-duplex radios cancel their own transmissions fast enough for real-world use? This work develops a multi-kernel adaptive canceller that tracks nonlinear self-interference under changing conditions and demonstrates more than 50 dB...