L2 and L∞ optimal downsampling from system theoretic viewpoint
Hanumant Singh Shekhawat, Gjerrit Meinsma · University of Twente Research Information · 2012
Downsampling is the process of reducing the sampling rate of a discrete signal. It has many applications in image processing, audio, radar etc. The reduction factor of the sampling rate can be an integer or a rational greater than one. This paper describes how sampled data system theory can be used to design an L2/L∞ optimal downsampler which reduces the sampling rate by an positive integer factor M from a given fast sampler sampling at h′ = h/M.