RIS phase-shift optimization aligns aggregate channels for physical-layer group key generation, with active RIS outperforming passive by >4x KGR in numerical results.
A hardware architecture for reconfigurable intelligent surfaces with minimal active elements for explicit channel estimation,
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Physical Layer Group Key Generation With the Aid of Reconfigurable Intelligent Surfaces
RIS phase-shift optimization aligns aggregate channels for physical-layer group key generation, with active RIS outperforming passive by >4x KGR in numerical results.