Improved Discrete Definition of Quadratic Time-Frequency Distributions
Abstract
Computation of a time-frequency distribution (TFD) requires a discrete version of the continuous distribution. This discrete TFD (DTFD) should be free from aliasing and conserve all the important mathematical properties of the continuous distribution. Existing DTFD definitions, however, poorly approximate this ideal. One popular definition, the generalized DTFD (GDTFD), is alias free but does not retain all the desirable properties from the continuous distribution. Another definition, the so-called alias-free GDTFD (AF-GDTFD), retains most properties yet is not always alias free. We propose a new DTFD definition, based on the GDTFD, that retains all desirable properties and is always alias free.
Collections
- Technology Innovation and Engineering Education Unit [63 items ]
Related items
Showing items related by title, author, creator and subject.
-
An automatic time-frequency procedure for interference suppression by exploiting their geometrical features
Saulig, Nicoletta; Sucic, Victor; Boashash, Boualem ( IEEE , 2011 , Conference Paper)This paper presents an adaptive method for interference suppression in the Wigner-Ville distribution. The structure of the artifacts in the Wigner-Ville distribution has been analyzed to optimally mask the signal Wigner-Ville ... -
A Simulink model of an active island detection technique for inverter-based distributed generation
Khan, F.; Massoud, Ahmed; Gastli, A. ( IEEE , 2013 , Conference Paper)With the increased involvement of Distributed Power Generation Systems (DPGSs) into the conventional power system, the structure has evolved and therefore has brought in various challenges albeit improving flexibility and ... -
Active and reactive power management of photovoltaic-based interline dynamic voltage restorer in low voltage distribution networks
Elserougi, A.; Abdel-Khalik, A. S.; Ahmed, S.; Massoud, Ahmed ( IEEE Computer Society , 2012 , Conference Paper)A dynamic voltage restorer (DVR) is a series connected device that can support the voltage at existing critical loads during voltage sags. Voltage restoration may need active and/or reactive power injection into the ...