On non-uniform sampling of signals

Nir N. Brueller, Natan Peterfreund, Moshe Porat

Research output: Contribution to conferencePaperpeer-review


In a variety of applications it is desirable to represent a signal by a set of non-uniformly distributed samples. In particular this is of interest in the case of non-bandlimited signals where an alternative method to uniform sampling is required. In this work a new approach to non-uniform sampling is introduced and discussed. The proposed method is based on estimation of a time distortion transformation, under which the original signal becomes practically bandlimited and can thus be reconstructed. The time distortion transformation is estimated using an iterative algorithm. According to this approach, the distortion function is accumulated where each iteration is aimed at compensating for differences in the instantaneous bandwidth after the previous iteration. This process converges and reaches a stage where the signal has practically a constant instantaneous bandwidth over the distorted time axis. Due to the iterative nature of the estimation process, most available techniques of localized bandwidth approximation may be used. The resultant mapping can be considered also as a new means for the definition of local bandwidth.

Original languageEnglish
Number of pages4
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 International Symposium on Industrial Electronics, ISIE. Part 1 (of 2) - Pretoria, S Afr
Duration: 7 Jul 199810 Jul 1998


ConferenceProceedings of the 1998 International Symposium on Industrial Electronics, ISIE. Part 1 (of 2)
CityPretoria, S Afr

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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