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Jian-Kang Zhang

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Jul 2026

Joint Channel Estimation and Dynamics-Aware Grouping for Time-Varying RIS-Assisted OTA Federated Learning

A unified framework for joint channel estimation and dynamics-aware user grouping in RIS-assisted OTA-FL systems, enabling reliable learning under imperfect CSI and heterogeneous dynamics and design a dynamics-aware grouping strategy based on long-term path-loss and short-term channel dynamics to reduce inter-user conf...

Zi-Qi Li, Shuang-Zhi Li, Uchechukwu Awada et al. · 0 citations
2026

Energy Efficiency Maximization for RIS-UAVs Aided Communication Networks: A Joint Optimization Framework

In this letter, we propose an efficient resource allocation algorithm for communication systems assisted by multiple uncrewed aerial vehicles borne reconfigurable intelligent surfaces (RISs). The algorithm jointly optimizes the base station (BS) power allocation, active beamforming and RIS phase shifts to maximize the...

Xin-Ying Guo, Pupu Zhao, Jian-Kang Zhang et al. · 1 citation

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