Title :
Time-frequency analysis using time-order representation and Wigner distribution
Author :
Pachori, Ram Bilas ; Sircar, Pradip
Author_Institution :
Commun. Res. Center, Int. Inst. of Inf. Technol., Hyderabad
Abstract :
A new method for time-frequency analysis of a signal, which combines the time-order representation and the Wigner-Ville distribution (WVD) has been presented in this paper. The time-order representation based on short-term Fourier-Bessel (FB) expansion, decomposes a multicomponent signal into a number of monocomponent signals, and then the WVD technique is applied on each component of the composite signal to analyze its time-frequency distribution (TFD). Simulation results with real bat signal are included to illustrate the effectiveness of the proposed method.
Keywords :
Bessel functions; Fourier transforms; Wigner distribution; signal representation; time-frequency analysis; Wigner-Ville distribution; monocomponent signal decomposition; short-term Fourier-Bessel expansion; time-frequency analysis; time-order representation; Acoustic applications; Frequency domain analysis; Information technology; Noise reduction; Radar applications; Signal analysis; Signal design; Signal resolution; Speech; Time frequency analysis;
Conference_Titel :
TENCON 2008 - 2008 IEEE Region 10 Conference
Conference_Location :
Hyderabad
Print_ISBN :
978-1-4244-2408-5
Electronic_ISBN :
978-1-4244-2409-2
DOI :
10.1109/TENCON.2008.4766782
