A note on the operator window of modulation spaces
Functional Analysis
2022-10-12 v3
Abstract
Inspired by a recent article \cite[JFAA, 28(2):1-34, (2022)]{Skrettingland2022JoFAaA}, this paper is devoted to the study of suitable window class in the framework of bounded linear operators on . We establish a natural and complete characterization for the window class such that the corresponding STFT leads to equivalent norms of modulation spaces. The positive bounded linear operators are also characterized in Cohen's class distributions such that the corresponding quantities form equivalent norms of modulation spaces. As a generalization, we introduce a family of operator classes corresponding to the operator-valued modulation spaces. Some applications of our main theorems to the localization operators are also concerned.
Cite
@article{arxiv.2208.00340,
title = {A note on the operator window of modulation spaces},
author = {Weichao Guo and Guoping Zhao},
journal= {arXiv preprint arXiv:2208.00340},
year = {2022}
}