Sparsity in Time-Frequency Representations
نویسندگان
چکیده
منابع مشابه
Sparsity in time-frequency representations
We consider signals and operators in finite dimension which have sparse time-frequency representations. As main result we show that an S-sparse Gabor representation in C with respect to a random unimodular window can be recovered by Basis Pursuit with high probability provided that S ≤ Cn/ log(n). Our results are applicable to the channel estimation problem in wireless communications and they e...
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We consider signals and operators in finite dimension which have sparse time-frequency representations. As main result we show that an S-sparse Gabor representation in C with respect to a random unimodular window can be recovered by Basis Pursuit with high probability provided that S ≤ Cn/ log(n). Our results are applicable to the channel estimation problem in wireless communications and they e...
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ژورنال
عنوان ژورنال: Journal of Fourier Analysis and Applications
سال: 2009
ISSN: 1069-5869,1531-5851
DOI: 10.1007/s00041-009-9086-9