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Author

Tianheng Xu

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Open access 2026

Multi-RIS-Assisted Satellite Compact Ultra-Massive Antenna Array for Massive Uplink Transmission

High-capacity satellite network is the cornerstone of future space-air-ground integrated networks. However, the satellite uplink transmissions still face critical challenges, including severe path loss, complex multi-user interference, and payload constraints. Recently, Reconfigurable Intelligent Surfaces (RIS) and Flu...

Kai Feng, Runke Fan, Tianheng Xu et al. · 0 citations
Preprint Jul 2026

Dual Fluid Antenna-Assisted UAV MIMO Networks

This letter investigates a dual FA-assisted UAV network for MU-Multiple-Input-Multiple-Output (MIMO) downlink communications, aiming to maximize the average achievable rate through the joint optimization of UAV trajectory, the transmit/receive FA positions, and beamforming.

Runke Fan, Tianheng Xu, Pei Peng et al. · 0 citations
Conference Jul 2026

Multi-RIS-Aided Satellite-Terrestrial Downlink RSMA Communication for User Fairness Exploiting Statistical CSI

As the role of satellites in sixth generation mobile communications system becomes increasingly well defined, satellite-terrestrial communications face an urgent need to improve spectral efficiency while ensuring user fairness. In this paper, we propose a multiple transmissive reconfigurable intelligent surfaces (RISs)...

Kai Feng, Tianheng Xu, F. Takawira et al. · 0 citations

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