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Multiplicative filtering in the linear canonical transform domain

机译:线性典范变换域中的乘法滤波

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摘要

As a generalisation of fractional Fourier transform, Fresnel transform and Fourier transform, the linear canonical transform (LCT) is a four parameter class of integral transform and has been used in many fields of optics and signal processing. In this study, the authors present a model of multiplicative filtering for the band-limited signals in the LCT domain by using the convolution theorem given in the literature. Finally, practical applications of filtering in LCT domain are discussed based on the presented model of multiplicative filtering and results are compared with that of frequency domain filtering and fractional domain filtering. It is found from the simulation results that mean square error is minimum for different values of signal-to-noise ratio in case of LCT domain filtering.
机译:作为分数阶傅立叶变换,菲涅耳变换和傅立叶变换的概括,线性规范变换(LCT)是积分变换的四参数类,已在光学和信号处理的许多领域中使用。在这项研究中,作者提出了一种使用文献中给出的卷积定理对LCT域中的带限信号进行乘法滤波的模型。最后,基于所提出的乘法滤波模型,讨论了LCT域滤波的实际应用,并将结果与​​频域滤波和分数域滤波相比较。从仿真结果发现,在LCT域滤波的情况下,对于不同的信噪比值,均方误差最小。

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