13 papers
BeamCKMDiff: Beam-Aware Channel Knowledge Map Construction via Diffusion Transformer
Le Zhao, Yining Wang, Xinyi Wang +2
Channel knowledge map (CKM) is emerging as a critical enabler for environment-aware 6G networks, offering a site-specific database to significantly reduce pilot overhead. However,…
Doppler-Resilient LEO Satellite OFDM Transmission with Affine Frequency Domain Pilot
Shuntian Tang, Xiaomei Wu, Xinyi Wang +5
Orthogonal frequency division multiplexing (OFDM) based low Earth orbit (LEO) satellite communication system suffers from severe Doppler shifts, while {the Doppler-resilient affine…
Trajectory Design for UAV-Based Low-Altitude Wireless Networks in Unknown Environments: A Digital Twin-Assisted TD3 Approach
Jihao Luo, Zesong Fei, Xinyi Wang +4
Unmanned aerial vehicles (UAVs) are emerging as key enablers for low-altitude wireless network (LAWN), particularly when terrestrial networks are unavailable. In such scenarios, th…
Towards Secure ISAC Beamforming: How Many Dedicated Sensing Beams Are Required?
Fanghao Xia, Zesong Fei, Xinyi Wang +4
In this paper, sensing-assisted secure communication in a multi-user multi-eavesdropper integrated sensing and communication (ISAC) system is investigated. Confidential communicati…
Wireless Powered MEC Systems via Discrete Pinching Antennas: TDMA versus NOMA
Peng Liu, Zesong Fei, Meng Hua +3
Pinching antennas (PAs), a new type of reconfigurable and flexible antenna structures, have recently attracted significant research interest due to their ability to create line-of-…
A Novel Symbol Level Precoding based AFDM Transmission Framework: Offloading Equalization Burden to Transmitter Side
Shuntian Tang, Zesong Fei, Xinyi Wang +3
Affine Frequency Division Multiplexing (AFDM) has attracted considerable attention for its robustness to Doppler effects. However, its high receiver-side computational complexity r…