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Author

Xiao-Kai Song

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Preprint Sep 2026

Sparse Channel Acquisition in Aging Fluid Antenna Systems: A Reliability-Calibrated Posterior Reconstruction Approach

Fluid antenna systems (FASs) exploit port-domain diversity within a compact aperture, but their gain can be lost if the receiver has to scan too many ports before data transmission. This paper studies sparse channel acquisition for aging FAS receivers, where the available information has mixed reliability: current obse...

Xiao-Kai Song, Jie Tang, Tuo Wu et al. · 0 citations
2026

Joint Trajectory and Fluid Antenna Design for Secure UAV-Enabled ISAC

This letter investigates a secure UAV-enabled integrated sensing and communication (ISAC) system, where fluid antennas (FAs) are exploited to reconfigure the spatial response of the aerial transmitter. A joint optimization problem is formulated to maximize the average weighted sensing gain (AWSG) by jointly optimizing...

Jun-Yuan Fan, Xiao-Kai Song, Jie Tang et al. · 0 citations
2026

Robust Beamforming Design for Self-Sustainable IRS-Aided MIMO SWIPT Communication

This paper investigates a novel self-sustainable intelligent reflecting surface (IRS)-enhanced multi-input multi-output simultaneous wireless information and power transfer (SWIPT) system under imperfect channel state information. Equipped with an energy harvesting module, the IRS harvests energy from received signals...

Wan-Li Ma, Xiao-Kai Song, Zhendong Yin et al. · 0 citations

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