Frames in rotated time-frequency planes

Document Type

Article

Publication Date

1-1-1999

Abstract

Weyl-Heisenberg frames are complete signal representations corresponding to rectangular tiling of the time-frequency plane. Extensions of these frames are obtained in the rotated time-frequency planes by using the fractional Fourier transformation. It is shown that rotation does not affect the frame bounds. For some specific angles, lattices in rotated coordinates will map to the lattices in the Cartesian coordinates. The rotated Weyl-Heisenberg frames obtained are more suitable for chirp-like signal analysis and synthesis.

Identifier

0032678142 (Scopus)

Publication Title

ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings

ISSN

07367791

First Page

1353

Last Page

1356

Volume

3

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