Optimal sparse-QIM codes for zero-rate blind watermarking

Pierre Moulin, Anil K. Goteti, Ralf Koetter

Research output: Contribution to journalConference articlepeer-review


The problem of blind watermarking of an arbitrary host signal in ℝ n under squared-error distortion constraints and Gaussian attacks is considered in this paper. While distortion-compensated lattice quantization index modulation (QIM) using nearly spherical Voronoi cells is known to be asymptotically capacity-achieving in this setup, our results suggest that such schemes are suboptimal in terms of error probability when the number of possible messages is subexponential in n. Our conjecture is substantiated by examples involving low-dimensional lattices and is related to the simplex conjecture in coding theory.

Original languageEnglish (US)
Pages (from-to)III73-III76
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - Sep 28 2004
EventProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada
Duration: May 17 2004May 21 2004

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering


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