DOI: 10.22213/2658-3658-2018-89-95

Article

Time-Domain Interpolation Using the Parametric DFT

Ponomareva, O., Smirnova, N., Ponomarev, A.

Abstract. The main directions of application of digital signal processing methods in classical discrete spectral analysis based on the discrete Fourier transform are considered. An algorithm for interpolating a time signal based on a discrete Fourier transform is given. The disadvantages of the existing interpolation algorithm for the time signal based on the discrete Fourier transform are revealed. Based on the analysis of the matrix structure of the inverse discrete Fourier transform, a modified parametric discrete Fourier transform is proposed. The properties of the basis of the modified parametric discrete Fourier transform are investigated.

Keywords: digtal Fourier transform, inversed digital Fourier transform, parametric fast Fourier transform, modified parametric discrete exponential functions

Pages: 89–95Total pages: 7

Published in: Instrumentation Engineering, Electronics and Telecommunications – 2018: Proceedings of the IV International Forum (December 12–14, 2018, Izhevsk, Russian Federation)

Year of publication: 2018