Recovery of Missing Samples from Oversampled Bandpass Signals and Its Stability

Sinuk KANG  Kil Hyun KWON  Dae Gwan LEE  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E96-A   No.6   pp.1412-1420
Publication Date: 2013/06/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E96.A.1412
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Digital Signal Processing
oversampling,  bandpass signal,  generalized sampling,  recovery of missing samples,  

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We present a multi-channel sampling expansion for signals with selectively tiled band-region. From this we derive an oversampling expansion for any bandpass signal, and show that any finitely many missing samples from two-channel oversampling expansion can always be uniquely recovered. In addition, we find a sufficient condition under which some infinitely many missing samples can be recovered. Numerical stability of the recovery process is also discussed in terms of the oversampling rate and distribution of the missing samples.