An efficient algorithm to extract components of a composite signal

  • Authors:
  • O. Arikan;A. Kemal Ozdemir

  • Affiliations:
  • Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara, Turkey;-

  • Venue:
  • ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 02
  • Year:
  • 2000

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Abstract

An efficient algorithm is proposed to extract components of a composite signal. The proposed approach has two stages of processing in which the time-frequency supports of the individual signal components are identified and then the individual components are estimated by performing a simple time-frequency domain incision on the identified support of the component. The use of a previously developed time-frequency representation significantly improves the performance of the proposed approach by providing a very accurate description on the auto-Wigner terms of the composite signal. Then, simple fractional Fourier domain incision provides reliable estimates for each of the signal components in O(N log N) complexity for a composite signal of duration N.