10 papers · 1 filter
Fluid-Antenna-Assisted Distributed Joint Decoding for Cell-Free Massive MIMO Unsourced Random Access
Liandong Hu, Jian Dang, Zaichen Zhang
Unsourced random access (URA) supports massive sporadic connectivity but remains limited by multiuser interference, distributed channel uncertainty, and local fading. This paper pr…
Off-Grid Position Optimization under Mutual Coupling in Fluid Antenna Arrays
Jingyuan Xu, Jian Dang, Zaichen Zhang
Fluid antenna arrays exploit continuous antenna repositioning within a finite aperture to provide geometry diversity beyond grid-constrained port selection. Every displacement, how…
Sparse Port Selection under Mutual Coupling in Fluid Antenna Arrays
Jingyuan Xu, Haoyu Liang, Zaichen Zhang +1
Fluid antenna systems obtain spatial degrees of freedom by reconfiguring antenna positions within a confined region, a principle that extends to beamforming: shaped beams can be sy…
EM-Guided Graph Learning for Fluid Antenna Beamforming under Current-Domain Constraints
Yuanhui Wu, Hao Jiang, Zaichen Zhang
Fluid antenna arrays (FAAs) reconfigure a finite set of radiating ports within a prescribed aperture. In compact apertures, however, channel-driven placement may cluster ports, str…
Impedance-Aware Zonal Port Activation for Fluid Antenna Arrays
Yuanhui Wu, Hao Jiang, Zaichen Zhang
Fluid antenna array (FAA) activation jointly determines the effective multi-user channel for precoding and the sparse physical aperture. Channel-oriented selection can concentrate…
Learned Blockwise Port Activation for Real Time Beamforming in Fluid Antenna Arrays
Yuanhui Wu, Zhentian Zhang, Hanjiang Hong +5
Fluid antenna arrays (FAAs), support multiuser downlink transmission by activating a subset of reconfigurable ports. The activation mask jointly determines the effective channel an…