5 papers
Uplink Multi-User MIMO Implementation in OpenAirInterface
Utku Uçak, Fariba Armandoust, Matthias Mehlhose +4
Cell-Free Multiple-Input Multiple-Output (MIMO) and Open Radio Access Network (O-RAN) have been active research topics in the wireless communication community in recent years. As a…
Performance Analysis of Cell-Free Massive MIMO under Imperfect LoS Phase Tracking
Noor Ul Ain, Lorenzo Miretti, Renato L. G. Cavalcante +1
We study the impact of imperfect line-of-sight (LoS) phase tracking on the uplink performance of cell-free massive MIMO networks. Unlike prior works that assume perfectly known or…
CISSIR: Beam Codebooks with Self-Interference Reduction Guarantees for Integrated Sensing and Communication Beyond 5G
Rodrigo Hernangómez, Jochen Fink, Renato L. G. Cavalcante +1
We propose a beam codebook design for integrated sensing and communication (ISAC) that reduces self-interference (SI) to alleviate analog distortion. Our optimization framework, wh…
Digital Post-Distortion Architectures for Nonlinear Power Amplifiers: Volterra and Kernel Methods
Daniel Schäufele, Jochen Fink, Renato L. G. Cavalcante +1
In modern 5G user equipments (UEs), the power amplifier (PA) contributes significantly to power consumption during uplink transmissions, especially in cell-edge scenarios. While re…
Optimized Detection with Analog Beamforming for Monostatic Integrated Sensing and Communication
Rodrigo Hernangómez, Jochen Fink, Renato L. G. Cavalcante +2
In this paper, we formalize an optimization framework for analog beamforming in the context of monostatic integrated sensing and communication (ISAC), where we also address the pro…