A New Approach for Reduction of Redundancy Using Optimal Time Domain Sampling and Interpolation
Shaghayegh Izadpanah, Mohammad Mehdi Ghanbarian, Afshin Kazerooni · 2008
In this paper the authors consider a general method, based on time domain samples for spectral manipulation of the time- limited signals. In this direction, all of the needed formulas for practical periodic time-limited interpolation in two cases of low pass and band pass has been derived. The work begins with dividing an arbitrary signal in time domain into the time limited non-overlapping frames, then each frame is processed to find the effective maximum frequency or equivalently the minimum number of samples that satisfy some error criteria. To find the optimum sampling frequency we used periodic interpolation for resampling and reconstruction, and suitable zero finding of the discrete variable nonlinear equation by combination of the time and frequency computation to increase the speed of convergence.