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Generalized convolution and product theorems associated with linear canonical transform

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Abstract

The linear canonical transform (LCT), which is a generalized form of the classical Fourier transform (FT), the fractional Fourier transform (FRFT), and other transforms, has been shown to be a powerful tool in optics and signal processing. Many results of this transform are already known, including its convolution theorem. However, the formulation of the convolution theorem for the LCT has been developed differently and is still not having a widely accepted closed-form expression. In this paper, we first propose a generalized convolution theorem for the LCT and then derive a corresponding product theorem associated with the LCT. The ordinary convolution theorem for the FT, the fractional convolution theorem for the FRFT, and some existing convolution theorems for the LCT are shown to be special cases of the derived results. Moreover, some applications of the derived results are presented.

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Authors and Affiliations

  1. Communication Research Center, Harbin Institute of Technology, Harbin, 150001, China

    Jun Shi, Xiaoping Liu & Naitong Zhang

  2. Department of Electrical and Computer Engineering, University of Delaware, Newark, DE, 19716, USA

    Jun Shi

Authors
  1. Jun Shi
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  2. Xiaoping Liu
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  3. Naitong Zhang
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Correspondence to Jun Shi.

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Shi, J., Liu, X. & Zhang, N. Generalized convolution and product theorems associated with linear canonical transform. SIViP 8, 967–974 (2014). https://doi.org/10.1007/s11760-012-0348-7

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  • DOI: https://doi.org/10.1007/s11760-012-0348-7

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