Title :
Elimination of interference component in Wigner-Ville distribution for the signal with 1/f spectral characteristic
Author :
Chan, Hsiao-Lung ; Lin, Jiunn-Lee ; Huang, Hui-Hsun ; Wu, Chien-Ping
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A new technique for interference-term suppression in the Wigner-Ville distribution (WVD) is proposed for signals with a 1/f spectrum shape. The spectral characteristic of the signal is altered by f α filtering before time-frequency analysis and compensated after analysis. With the utilization of the proposed technique in a smoothed pseudo Wigner-Ville distribution, an excellent suppression of the interference component can be achieved. The authors apply this technique to the heart rate variability signal.
Keywords :
Wigner distribution; electrocardiography; interference (signal); medical signal processing; spectral analysis; time-frequency analysis; 1/f spectral characteristic signal; Wigner-Ville distribution; electrodiagnostics; heart rate variability signal; interference component elimination; Filtering; Finite impulse response filter; Frequency response; Heart rate variability; Interference elimination; Interference suppression; Shape; Signal analysis; Spectral analysis; Time frequency analysis; Heart Rate; Humans; Models, Cardiovascular; Signal Processing, Computer-Assisted; Supine Position;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
