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      A new approach to time-frequency localized signal design

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      Author
      Özdemir, Ahmet Kemal
      Aydın, Zafer
      Arıkan, Orhan
      Date
      2002
      Source Title
      Proceedings of the International Conference on Acoustics, Speech, and Signal Processing, IEEE 2002
      Print ISSN
      1520-6149
      Publisher
      IEEE
      Pages
      1229 - 1232
      Language
      English
      Type
      Conference Paper
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      Abstract
      A novel approach is presented for the design of signals in Wigner Domain. In this method, the desired signal features in the time-frequency domain are specified in two stages. First the user specifies the spine curve around which the energy of the desired signal is distributed in the time-frequency plane. Then, the user specifies the spread of the desired signal energy around the spine. In addition to this fundamentally new way of defining the time-frequency features of the desired signal, the actual synthesis of the signal is performed in a warped fractional Fourier transform approach [1]. After obtaining the designed signal, it is transformed back to the original time domain providing the final result of the new signal synthesis technique. In contrast to the conventional algorithms, the proposed method provides very good results even if the inner cross-term structure of the desired signal is not specified.
      Keywords
      Fractional domain warping
      Fractional Fourier transforms
      Signal synthesis technique
      Time frequency localized signal design
      Wigner domain
      Algorithms
      Eigenvalues and eigenfunctions
      Fourier transforms
      Frequency domain analysis
      Probability distributions
      Time domain analysis
      Signal processing
      Permalink
      http://hdl.handle.net/11693/27571
      Published Version (Please cite this version)
      https://doi.org/10.1109/ICASSP.2002.5744023
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      • Department of Electrical and Electronics Engineering 3524
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