We show the existence of a "best approximation solution" to the set of equations f, f i = a i , i β I, where {f i } iβI is a frame for a Hilbert space (H, β’, β’ ) and {a i } iβI β l 2 (I). We derive formulas showing how the solution changes if {a i } iβI or {f i } iβI is perturbed. We explain why the
Stability of Gabor frames with arbitrary sampling points
β Scribed by Hans G. Feichtinger; Wenchang Sun
- Publisher
- Akadmiai Kiad
- Year
- 2006
- Tongue
- English
- Weight
- 283 KB
- Volume
- 113
- Category
- Article
- ISSN
- 1588-2632
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
In this paper, we study the stability of Gabor frames Ο mb na m n β Z . We show that Ο mb na m n β Z remains a frame under a small perturbation of Ο m, or n. Our results improve some results from Favier and Zalik and are applicable to many frequently used Gabor frames. In particular, we study the ca
In Appl. Comput. Harmon. Anal. 2 (1995), 160-173, Favier and Zalik presented a multivariate version of Kadec's 1/4-theorem. But their result contains an additional condition B d (L) < 1. In this paper, we show that this condition may be deleted. In fact, we make a straightforward generalization of K
The solution of problems of control, observation of the initial state, parameter estimation and related topics can be optimized by using the freedom in the choice of the instants of sampling. Summary--For linear multivariable control systems the question of observing the state by means of sampling