The norm of time-frequency and wavelet localization operators

Fabio Nicola, Paolo Tilli

Time-frequency localization operators (with Gaussian window) $L_F:L^2({\mathbb{R}}^d)\to L^2({\mathbb{R}}^d)$, where $F$ is a weight in ${\mathbb{R}}^{2d}$, were introduced in signal pro…