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Volume 8, Issue 6, December 2019, Page: 100-105
Filter Banks from the Fibonacci Sequence
Fuxian Chen, Faculty of Mathematics and Informatics, South China Agricultural University, Guangzhou, China
Qiuhui Chen, Faculty of Mathematics and Informatics, South China Agricultural University, Guangzhou, China
Weibin Wu, Faculty of Engineer, South China Agricultural University, Guangzhou, China
Xiaoming Wang, Faculty of Engineer, South China Agricultural University, Guangzhou, China
Received: Oct. 21, 2019;       Accepted: Dec. 2, 2019;       Published: Dec. 31, 2019
Abstract
Wavelet transform is an important quadratic representation in time-frequency domain of signals. The main advantage of wavelet transform is the time frequency localization as compared with the fourier transform. Due to the reason of dilation and translation operation acting the basic time-frequency atoms. Therefore a multi-resoloution analysis strategy is devoted to the construction of wavelet basis of L2(R), which also establishes a bridge between engineer and mathematics. The construction of wavelets is equivalent to the design of filter banks with complete reconstruction. In this note we investigate filter banks from the Fibonacci sequence. The draw back is that, the convergence z-transform is less than 1, hence it can not be used as filter. By adopting the Hadamard product of the Fibonacci sequence and a geometric sequence, a type of Fibonacci-based bi-orthogonal filter banks are constructed. This kind of filter banks are based two bricks: Bezout polynomials and the mask of the cardinal B-splines. These filters are essentially rational functions, which have potential applications in system identification and signal processing.
Keywords
Filter Banks, Bezout Polynomial, Wavelet, Symbol of B-spline
Fuxian Chen, Qiuhui Chen, Weibin Wu, Xiaoming Wang, Filter Banks from the Fibonacci Sequence, Pure and Applied Mathematics Journal. Vol. 8, No. 6, 2019, pp. 100-105. doi: 10.11648/j.pamj.20190806.12
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