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IEEE Transactions on Signal Processing
Article . 1998 . Peer-reviewed
License: IEEE Copyright
Data sources: Crossref
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zbMATH Open
Article . 1998
Data sources: zbMATH Open
DBLP
Article . 1998
Data sources: DBLP
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Scaling functions robust to translations

Authors: Steven A. Benno; José M. F. Moura;

Scaling functions robust to translations

Abstract

Summary: The discrete wavelet transform (DWT) is popular in a wide variety of applications. Its sparse sampling eliminates redundancy in the representation of signals and leads to efficient processing. However, the DWT lacks translation invariance. This makes it ill suited for many problems where the received signal is the superposition of arbitrarily shifted replicas of a transmitted signal, as when multipath occurs, for example. The paper develops algorithms for the design of orthogonal and biorthogonal compact support scaling functions that are robust to translations. Our approach is to maintain the critical sampling of the DWT while designing multiresolution representations for which the coefficient energy redistributes itself mostly within each subband and not across the entire time-scale plane. We obtain expedite algorithms by decoupling the optimization from the constraints on the scaling function. Examples illustrate that the designed scaling function significantly improves the robustness of the representation.

Related Organizations
Keywords

Signal theory (characterization, reconstruction, filtering, etc.), discrete wavelet transform, Switching theory, application of Boolean algebra; Boolean functions, scaling functions, critical sampling, Application of orthogonal and other special functions, multiresolution representations

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Average
Top 10%
Average
bronze