A NEW INTERPOLATION METHOD BASED ON DISCRETE FOURIER TRANSFORM

摘要

The proliferation of signal processing is creating a pressing need for high-accuracy interpolation methods. The focus of this paper is to produce an interpolation approach based on discrete Fourier transform (DFT) that can greatly enhance accuracy of interpolation. The essential technique of the new method is to insert corresponding samples in frequency domain and the inverse DFT follows. What makes it very attractive is its undistortion to the foregone information in frequency domain. In addition, it is no need for the new method to define any interpolation functions. Numeric examples have been provided to illustrate the superiority and the effectiveness of the new interpolation method.