Sigma-Delta quantization of sub-Gaussian frame expansions and its application to compressed sensing

  title={Sigma-Delta quantization of sub-Gaussian frame expansions and its application to compressed sensing},
  author={Felix Krahmer and Rayan Saab and {\"O}zg{\"u}r Yilmaz},
Suppose that the collection {ei}i=1 forms a frame for R, where each entry of the vector ei is a sub-Gaussian random variable. We consider expansions in such a frame, which are then quantized using a Sigma-Delta scheme. We show that an arbitrary signal in R can be recovered from its quantized frame coefficients up to an error which decays root-exponentially in the oversampling rate m/k. Here the quantization scheme is assumed to be chosen appropriately depending on the oversampling rate and the… CONTINUE READING
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