Author

Zai-Chen Zhang

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Preprint Aug 2026

Impedance-Aware Zonal Port Activation for Fluid Antenna Arrays

Fluid antenna array (FAA) activation jointly determines the effective multi-user channel for precoding and the sparse physical aperture. Channel-oriented selection can concentrate high-gain ports and erode aperture quality, whereas geometry-oriented selection does not adapt to instantaneous channel state information (C...

Yuan-Hui Wu, Hao Jiang, Zai-Chen Zhang · 0 citations

Preprint Aug 2026

Fluid-Antenna-Assisted Distributed Joint Decoding for Cell-Free Massive MIMO Unsourced Random Access

A fluid-antenna-assisted distributed joint decoder for cell-free massive MIMO URA and the framework provides a feasible integration of fluid antennas and cell-free URA and motivates end-to-end evaluation under pilot collisions and switching overhead.

Li Hu, J. Dang, Zai-Chen Zhang · 0 citations