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Title: The higher-order reassigned local polynomial periodogram and its properties
Authors: Li, Xiumei
Bi, Guoan
Li, Gang
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2012
Source: Li, X., Bi, G., & Li, G. (2012). The higher-order reassigned local polynomial periodogram and its properties. Signal Processing, 92(12), 2909-2918.
Series/Report no.: Signal processing
Abstract: Recently the second order reassigned local polynomial periodogram (LPP) has been reported to show some desirable properties for signal representation in the time–frequency domain. In this paper, the higher-order reassigned LPPs and their properties are discussed. With the definition of the modified Wigner–Ville distribution, the reassignment operators of the third, fourth and the arbitrary higher-order reassigned LPP are defined and derived. It is shown that the higher-order reassigned LPPs share the properties with the second order reassigned LPP, such as the non-negativity, non-bilinearity, time and frequency shifts invariance, time-scaling property and energy conservation. The property of the higher-order reassigned LPP to perfectly localize the corresponding order polynomial phase signals is also investigated to obtain improved signal concentration in the time–frequency domain.
ISSN: 0165-1684
DOI: 10.1016/j.sigpro.2012.05.023
Rights: © 2012 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Journal Articles

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