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Author

Li Zhen

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Sep 2026

AFDM-Aided Grouped RSMA for High-Mobility Downlink Transmissions

Rate-splitting multiple access (RSMA) has emerged as a flexible downlink framework for managing multiuser interference through common and private message splitting. However, in high-mobility scenarios, Doppler-induced intercarrier interference degrades RSMA-based transmission and motivates integration with a transform-...

Li Zhen, Qing-Zhi Meng, Yu-Rong Guo et al. · 0 citations
Open access 2026

ShellMean-MAPPO: A Conflict-Aware MARL Framework for Downlink Resource Allocation in Multi-Shell LEO Satellite Networks

This work proposes a structured multi-agent reinforcement learning (MARL) framework based on multi-agent proximal policy optimization (MAPPO), termed ShellMean-MAPPO, for downlink resource allocation with explicit conflict resolution, and demonstrates its advantages over representative MARL schemes in terms of scheduli...

Li Zhen, Qi-Hao Zhang, Qing-Zhi Meng et al. · 0 citations

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