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Author

Lin Chen

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Preprint Sep 2026

Scalable High-Precision Near-Field Channel Parameter Estimation via Spatial Chirp Structure

This paper presents a scalable framework for high-precision near-field multipath channel parameter estimation in extremely large antenna array (ELAA) systems, enabling joint recovery of path number, path gains, angles, and ranges from a single noisy observation. The key idea is to interpret the near-field multipath cha...

Lin Chen, Xiao-Jun Yuan, Y. Zhang · 0 citations
2026

Fluid Antenna Aided Orthogonal Beamspace Construction in Near-Field LoS-MIMO Channels

This paper proposes a novel fluid antenna (FA) assisted orthogonal channel construction scheme for the near-field (NF) line-of-sight (LoS) multiple-input multiple-output (MIMO) system. Specifically, we consider a transmitter (Tx) equipped with a fixed-position uniform planar array (UPA) and a mobile receiver (Rx) equip...

Hai-Bo Liu, Lin Chen, Xiao-Jun Yuan et al. · 0 citations
Preprint Sep 2026

Discrete Antenna Positioning and Beamforming Design for RIS-Assisted MA Secure ISAC Systems

An alternating optimization (AO) framework is proposed, employing techniques including discrete binary particle swarm optimization (BPSO), successive convex approximation (SCA) and difference-of-convex (DC) programming to transform the optimization problem into convex subproblems.

Zhen-Dong Li, Min Zhu, Zhou Su et al. · 0 citations

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