Author

John M. Cioffi

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Preprint Sep 2026

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

This paper incorporates uniform planar arrays into a cooperative dynamic spectrum access (DSA) mechanism based on the IEEE 1900.5.2 spectrum consumption model (SCM). Unlike prior work on SCM-based DSA that assume a fixed radiation pattern, the proposed DSA mechanism treats the radiation pattern as a design variable and...

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

Millimeter-wave (mmWave) multi-user MIMO systems are highly susceptible to dynamic blockages, and reconfigurable intelligent surfaces (RIS) have been introduced as a remedy. However, RIS links can themselves be blocked, while existing studies often assume ideal availability. This paper proposes an end-to-end mobility-a...

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

Preprint Sep 2026

A Multiuser Channel Capacity Region

A finite structural characterization of the $U$-user multiuser channel-capacity region appears here. This region relies upon three concepts: (i) subset-based message atomization, (ii) synchronized receiver chain-rule/Fano reduction, and (iii) successive-decoding achievability via a finite-super-symbol closure. The resu...

John M. Cioffi · 0 citations