Generalized time-shift covariant quadratic time-frequency representations with arbitrary group delays

@article{PapandreouSuppappola1995GeneralizedTC,
  title={Generalized time-shift covariant quadratic time-frequency representations with arbitrary group delays},
  author={Antonia Papandreou-Suppappola},
  journal={Conference Record of The Twenty-Ninth Asilomar Conference on Signals, Systems and Computers},
  year={1995},
  volume={1},
  pages={553-557 vol.1}
}
We propose new classes of quadratic time-frequency representations (QTFRs) that satisfy the generalized time-shift covariance property important for analyzing signals propagating through systems with group delay dependent characteristics. We obtain these classes from Cohen's (1966) class and the affine class of constant time-shift covariant QTFRs using a generalized warping that depends on the desirable group delay time-shift covariance. We develop formulations for the new classes, desirable… CONTINUE READING
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