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math.OC2026
A Gaussian smoothing-based zeroth-order method for Goldstein second-order stationarity
Ming Lei, Ting Kei Pong, Man-Chung Yue +2
We introduce a new generalized Hessian, called the Goldstein second-order -subdifferential, and an associated notion of -second-order stationary point for continuou…
eess.SP2026
Chirp Parameter Optimization and Distributed Detection for Cooperative RSMA-AFDM Systems
Qingyu Li, Guanghui Liu, Yusha Liu +4
Affine frequency division multiplexing (AFDM) exhibits excellent Doppler robustness and the ability to characterize doubly selective channels. However, its signal dispersion charac…