Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 378-381 |
| Number of pages | 4 |
| Journal | IEEE Signal Processing Letters |
| Volume | 9 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2002 |
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On rotated time-frequency kernels. / Bastiaans, M.J.; Alieva, T.; Stankovic, L.
In: IEEE Signal Processing Letters, Vol. 9, No. 11, 2002, p. 378-381.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - On rotated time-frequency kernels
AU - Bastiaans, M.J.
AU - Alieva, T.
AU - Stankovic, L.
PY - 2002
Y1 - 2002
N2 - The principal axes of the time-frequency representation of a signal are defined as those mutually orthogonal directions in the time-frequency plane for which the width of the signal's fractional power spectrum is minimum or maximum. The time-frequency kernels used in the Cohen class of time-frequency representations are then rotated in the time-frequency plane, in order to align the kernels' preferred axes to the signal's principal axes. It is shown that the resulting time-frequency representations show a better reduction of cross-terms without too severely degrading the auto-terms than the corresponding, original time-frequency representations.
AB - The principal axes of the time-frequency representation of a signal are defined as those mutually orthogonal directions in the time-frequency plane for which the width of the signal's fractional power spectrum is minimum or maximum. The time-frequency kernels used in the Cohen class of time-frequency representations are then rotated in the time-frequency plane, in order to align the kernels' preferred axes to the signal's principal axes. It is shown that the resulting time-frequency representations show a better reduction of cross-terms without too severely degrading the auto-terms than the corresponding, original time-frequency representations.
U2 - 10.1109/LSP.2002.805118
DO - 10.1109/LSP.2002.805118
M3 - Article
VL - 9
SP - 378
EP - 381
JO - IEEE Signal Processing Letters
JF - IEEE Signal Processing Letters
SN - 1070-9908
IS - 11
ER -