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Li-Hsiang Shen

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2026

Active Dual STAR-RISs for Full-Duplex MIMO Communications: An Energy-Efficient Optimization Framework

Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) can dynamically adjust wireless channels through joint controls. The recent development of dual STAR-RISs (D-STAR) architecture provides capacity improvement by utilizing signals impinging from 360-degree for full-plane service c...

Yu-Ting Li, Kai-Ten Feng, Li-Hsiang Shen et al. · 0 citations
Jul 2026

FSIM: Fluid Element Stacked Intelligent Metasurface for Mulituser Downlink Networks

Simulation results reveal that a compact FSIM with a small inter-layer thickness is preferable, as increasing the thickness weakens inter-layer coupling and degrades the achievable sum rate, and the proposed AO-based algorithm achieves superior rate performance compared to sub-schemes, metaheuristic methods, and conven...

Tsung-Yu Wei, Li-Hsiang Shen, Kai-Ten Feng et al. · 1 citation · ⚡1
Open access Jul 2026

Energy Efficient Active Stacked Intelligent Metasurfaces

This letter investigates an energy-efficient active stacked intelligent metasurfaces (ASIM)-assisted downlink transmission framework, where a multi-antenna base station (BS) serves multiple users through a multi-layer metasurface architecture. Unlike conventional passive intelligent surfaces, the considered ASIM employ...

Li-Hsiang Shen · 0 citations

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