Power class time-frequency representations: interference geometry, smoothing, and implementation

Author

Papandreou-Suppappola, A. ; Hlawatsch, Franz ; Boudreaux-Bartels, G.F.

Author_Institution

Dept. of Electr. & Comput. Eng., Rhode Island Univ., Kingston, RI, USA

fYear

1996

fDate

18-21 Jun 1996

Firstpage

193

Lastpage

196

Abstract

The nth power class (PC_n) of quadratic time-frequency representations (QTFRs) is specifically suited for the multiresolution analysis of signals passing through systems whose dispersion characteristic is approximately f^κ. This paper considers several aspects of PC analysis important in applications. We discuss the geometry of PC auto terms and cross terms, and we propose new PC QTFRs that attenuate cross terms via smoothing. We describe the implementation of PC QTFRs via warping techniques. Finally, simulation results demonstrate the advantages of PC analysis

Keywords

interference (signal); signal representation; signal resolution; smoothing methods; time-frequency analysis; auto terms; cross terms; dispersion characteristic; interference geometry; multiresolution signal analysis; power class; quadratic time-frequency representations; simulation results; smoothing; warping techniques; Delay effects; Frequency measurement; Geometry; Interference; Smoothing methods; Time frequency analysis; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Time-Frequency and Time-Scale Analysis, 1996., Proceedings of the IEEE-SP International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-3512-0

Type

conf

DOI

10.1109/TFSA.1996.547214

Filename

547214