Sample entropy for graph signals: An approach to nonlinear dynamic analysis of data on networks

A batch of recent signal‑processing and wireless communications preprints covering: SampEnG (a topology‑aware generalization of Sample Entropy for graph signals); graph‑signal diffusion models (U‑Net/GNN diffusion policy) for constrained wireless resource allocation; a deep‑learning quasi‑stationary slice detector for radar respiration under large body motion; DDA‑Net, a 3D deep‑unfolding ADMM architecture for TDD massive‑MIMO channel estimation in Doppler‑Delay‑Angle domain; an operator‑theoretic Energy Concentration Index and IMRED detector for impulse‑excited defect detection; semantic‑awar