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This is a Quantitative Study study.

October 2, 2025Open Access

Introducing Meta-Fiber into Stacked Intelligent Metasurfaces for MIMO Communications: A Low-Complexity Design with only Two Layers

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The proposed two-layer SIM design with meta-fiber improves channel capacity by over 25%.
Incorporating meta-fibers allows a reduction of 59% in the total number of meta-atoms compared to traditional designs.
The optimization approach uses a closed-form expression to enhance phase shift calculations, lowering computational demands.
The findings highlight potential applications in advanced wave-domain signal processing and efficient RF system designs.

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Observational analysis shows a 25% increase in channel capacity and reduced complexity in SIM design, indicating improved energy efficiency.

Niu et al. (2025) studied this question.

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Observational analysis shows a 25% increase in channel capacity and reduced complexity in SIM design, indicating improved energy efficiency.