Cyclo-period estimation for discrete-time cyclo-stationary signals

Authors:
Jiandong Wang;Tongwen Chen;Biao Huang
Affiliations:
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, Canada;-;-
Venue:
IEEE Transactions on Signal Processing
Year:
2006

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Abstract

This paper presents a new method, named as the variability method, to estimate the cyclo-period of a discrete-time cyclo-stationary signal. The method is essentially based on the time-varying correlation and/or the time-varying mean, whose estimators are associated with some statistics of blocked signals; a plot of variability of these statistics as a function of the blocking operator index visually reveals a periodic pattern, from which the cyclo-period is obtained. Properties of the variability method are analyzed and compared with three existing cyclo-period estimation methods via simulation and real-life examples.