Elimination of interference component in Wigner-Ville distribution for the signal with 1/f spectral characteristic.
A new technique for interference-term suppression in Wigner-Ville distribution (WVD) is proposed for the signal with 1/f spectrum shape. The spectral characteristic of the signal is altered by f alpha filtering before time-frequency analysis and compensated after analysis. With the utilization of the proposed technique in smoothed pseudo Wigner-Ville distribution, an excellent suppression of interference component can be achieved.
Chan
H L
HL
Department of Electrical Engineering, National Taiwan University, Taipei, ROC.
Lin
J L
JL
Huang
H H
HH
Wu
C P
CP
D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008955:Models, Cardiovascular; D012815:Signal Processing, Computer-Assisted; D016683:Supine Position