Fabio Busacca Andrea Panebianco Yin Sun Adaptive Underwater Acoustic Communications with Limited Feedback: An AoI-Aware Hierarchical Bandit Approach. GLOBECOM 2025 2426-2431 conf/globecom/2025 https://doi.org/10.1109/GLOBECOM59602.2025.11432193 db/conf/globecom/globecom2025.html#BusaccaPS25 streams/conf/globecom