ZHANG Zhi-chao, LUO Mao-kang. Relations Between Gabor Transform and Linear Canonical Transform and Their Application for Filter Design[J]. Acta Electronica Sinica, 2015, 43(12): 2525-2529.
ZHANG Zhi-chao, LUO Mao-kang. Relations Between Gabor Transform and Linear Canonical Transform and Their Application for Filter Design[J]. Acta Electronica Sinica, 2015, 43(12): 2525-2529. DOI: 10.3969/j.issn.0372-2112.2015.12.027.
The linear canonical transform(LCT)is a generalization of the fractional Fourier transform(FRFT)and has more flexibility than FRFT sinice it contains three free parameters.As a special case of the short-time Fourier transform(STFT)
the Gabor transform(GT)is an important time-frequency analysis tool for signal processing.According to the relationship between STFT and LCT
as well as the invariance of Gaussian function in LCT domain
we present a new form of GT and obtain that the LCT is equivalent to an affine transformation for the new GT when parameters meet certain conditions.Furthermore
we investigate the application of this relationship for filter design in LCT domain.Finally
the simulation results verify the correctness and effectiveness of the proposed theory and technique.