Author

Seung-Min Choi

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Preprint Sep 2026

Cooperative Dynamic Spectrum Access for Cell-Free MISO Networks Using Spectrum Consumption Models

Simulations in an indoor warehouse setting show that the proposed DSA mechanism better utilizes the spatial dimension for spectrum sharing, and a leakage-aware iterative water-filling precoder using uplink-downlink reciprocity, a power-control method that further encourages spectrum sharing, and a sequential admission...

Jiwon Sung, Seung-Min Choi, A. Gorle et al. · 0 citations

Preprint Aug 2026

End-to-End Mobility-Aware Multi-RIS Optimization via Blockage Detection and Closed-Form Riemannian Updates

This paper proposes an end-to-end mobility-aware multi-RIS optimization framework that integrates per-RIS blockage detection with closed-form Riemannian updates and jointly optimize the BS precoder and RIS phases using a Stochastic Closed-form Riemannian Phase Alignment algorithm.

Sehyun Ryu, Seung-Min Choi, Hyun Jong Yang et al. · 0 citations