earticle

영어

Sampling rate conversion is, in general, implemented using time domain based poly-phase filter structures. The other way of implementing multi-rate signal processing is frequency domain based approach, which has the advantage of computational savings. This paper clearly explains how to apply frequency domain processing techniques for sampling rate conversion. The proposed approach is applied to both power of 2 and non-power of 2 sampling rate conversion factors. The properties of FFT are utilized analytically to solve the implementation problems such as non-power of 2 sampling rate factors. The theoretical computational complexity of the proposed approach is provided. The simulation results of proposed approach are compared with the quality of time domain approach and the comparison shows that differences are insignificant.