507 citations
- Hochschule BremenDE4 papers
- University of California, BerkeleyUS4 papers
- International UniversityKH3 papers
- Newcastle UniversityGB3 papers
- University of BremenDE3 papers
- Boston UniversityUS2 papers
- Tecnologie Avanzate (Italy)IT2 papers
- Chemnitz University of TechnologyDE1 paper
- Institut des Hautes Études ScientifiquesFR1 paper
- Max Planck Institute for MathematicsDE1 paper
- Max Planck Institute for PhysicsDE1 paper
- Nanyang Technological UniversitySG1 paper
Showing math.CAShow all
2 papers · 1 filter
math.CA2007★ 5 cited
Sparsity in time-frequency representations
Goetz E. Pfander, Holger Rauhut
We consider signals and operators in finite dimension which have sparse time-frequency representations. As main result we show that an -sparse Gabor representation in $\mathbb{C…
math.CA2007
On the invertibility of "rectangular" bi-infinite matrices and applications in time--frequency analysis
Goetz E. Pfander
Finite dimensional matrices having more columns than rows have no left inverses while those having more rows than columns have no right inverses. We give generalizations of these s…