arxiveess.SP2026-07-17
FSIM: Fluid Element Stacked Intelligent Metasurface for Multiuser Downlink Networks
Tsung-Yu Wei, Li-Hsiang Shen, Kai-Ten Feng, Lie-Liang Yang
A fluid element (FE)-aided stacked intelligent metasurface (FSIM) for multiple-input single-output (MISO) communication system is investigated, where a multi-antenna base station (BS) serves multiple single-antenna users through FSIM. Unlike conventional SIM with fixed meta-atom…