Discrete time signals which can be recovered from samples
Palghat P. Vaidyanathan, See-May Phoong · 2002
If a discrete time signal x(n) is bandlimited appropriately we can decimate it without aliasing. However, there exists a broad class of non bandlimited signals which can be recovered perfectly from their decimated versions. We consider both uniform and nonuniform decimation of this kind and explore some applications, especially in noise shaping and in /spl Sigma/-/spl Delta/ modulator type of architectures.