It is known that Gabor expansions do not converge unconditionally in and that cannot be characterized in terms of the magnitudes of Gabor coefficients. By using a combination of Littlewood-Paley and Gabor theory, we show that can nevertheless be characterized in terms of Gabor expansions, and that the partial sums of Gabor expansions converge in -norm.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm146-1-2, author = {Karlheinz Gr\"ochenig and Christopher Heil}, title = {Gabor meets Littlewood-Paley: Gabor expansions in $L^{p}($\mathbb{R}$^{d})$ }, journal = {Studia Mathematica}, volume = {147}, year = {2001}, pages = {15-33}, zbl = {0970.42021}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm146-1-2} }
Karlheinz Gröchenig; Christopher Heil. Gabor meets Littlewood-Paley: Gabor expansions in $L^{p}(ℝ^{d})$ . Studia Mathematica, Tome 147 (2001) pp. 15-33. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm146-1-2/