Author

Xing-Wang Li

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Preprint Sep 2026

Feedback-Efficient Beam-User Association for Near-Field mmWave Hybrid Beamforming Systems

Near-field multiuser hybrid beamforming (HBF) requires joint angle-distance codebooks whose size, and hence reporting overhead, grows with the array aperture. For the extremely large array considered here, reporting one quality metric per codeword already incurs more overhead than full channel state information (CSI) f...

T. Van Le, Ngoc-Thanh Nguyen, Nam Van Dinh et al. · 0 citations

Preprint Sep 2026

OTFS-Enabled Delayed SINR-Feedback Power Control for Reliable and Fair High-Mobility UAV Communications

Simulations show that the effective SINR of OTFS changes 37.8% less per frame than that of orthogonal frequency division multiplexing (OFDM) at 70 m/s under the same numerology, and that the waveform contribution to the usefulness of stale SINR feedback increases with mobility.

T. Van Le, Luong Cong Nguyen, Trong-Dai Hoang et al. · 0 citations

Preprint Sep 2026

Mobility- and Feedback-Aware Multi-Level Conflict-Triggered Hybrid Beamforming for Multi-User mmWave UAV Systems

This paper proposes a mobility- and feedback-aware multi-level refinement strategy, termed MLR-TG, to improve robustness without always-on candidate search for multi-user large multiple-input multiple-output millimeter-wave unmanned aerial vehicle (UAV) downlink systems under mobility-induced channel aging and delayed...

T. Van Le, Luong Cong Nguyen, Xing-Wang Li et al. · 0 citations