A sampling limit for the empirical mode decomposition

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A sampling limit for the empirical mode decomposition

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dc.contributor.author Stevenson, N
dc.contributor.author Mesbah, M
dc.contributor.author Boashash, B
dc.date.accessioned 2011-07-30T06:07:33Z
dc.date.available 2011-07-30T06:07:33Z
dc.date.issued 2005-08
dc.identifier.citation Proceedings of the Eighth International Symposium on Signal Processing and Its Applications, vol:2,pages:647 en_US
dc.identifier.isbn 0-7803-9243-4
dc.identifier.other Digital Object Identifier : 10.1109/ISSPA.2005.1581021
dc.identifier.uri http://hdl.handle.net/10576/10727
dc.description (The most recent upgrade of the original software package that calculates Time-Frequency Distributions and Instantaneous Frequency estimators can be downloaded from the web site: www.time-frequency.net. This was the first software developed in the field, and it was first released publicly in 1987 at the 1st ISSPA conference held in Brisbane, Australia., and then continuously updated). en_US
dc.description.abstract The aim of this paper is to investigate the effect of sampling on the empirical mode decomposition (EMD). To this end, an experiment utilising linear frequency modulated (LFM) signals was used to simulate different sampling rates. This experiment showed that as the frequency content of the signal (fc) approached the sampling frequency (fs) the EMD performed poorly due to poor amplitude resolution. This led to a definition of a sampling limit that was 5 times the Nyqvist rate (fs/10) to improve the performance of the EMD. Comparative simulation with this sampling limit was conducted on a simulated and a real world signal. The results exhibited significant improvement in intrinsic mode function (IMF) orthogonality, the distribution of IMF energy and IMF coherence. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject Boundary conditions en_US
dc.subject Chirp modulation en_US
dc.subject Cyclic redundancy en_US
dc.subject Frequency estimation en_US
dc.subject Frequency modulation en_US
dc.subject Sampling methods en_US
dc.subject Signal analysis en_US
dc.subject Signal processing en_US
dc.subject Signal resolution en_US
dc.subject Signal sampling en_US
dc.subject IMF orthogonality en_US
dc.subject Hilbert Transform en_US
dc.subject Hilbert marginal spectrum en_US
dc.subject IMF coherence en_US
dc.subject EMD en_US
dc.subject IMF decomposition en_US
dc.subject Time-Frequency analysis en_US
dc.title A sampling limit for the empirical mode decomposition en_US
dc.type Article en_US

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