DocumentCode
2251244
Title
On the cross-terms in LPPs
Author
Li, Xinbo ; Wang, Youyi ; Bi, Guoan ; Shi, Yaowu ; Li, Xiumei
Author_Institution
Sch. of Commun. Eng., Jilin Univ., Changchun, China
fYear
2009
fDate
24-27 May 2009
Firstpage
333
Lastpage
336
Abstract
This paper studies the effects of cross-terms in the local polynomial periodograms (LPP) by defining and examining the cross local polynomial periodogram (CLPP) and the time-frequency correlative coefficients (TFCC). Our observations show that the cross-terms of signal components can be ignored if they do not intersect and the window length used in the LPP is sufficient. In addition, the TFCC is useful for the analysis of time-frequency coherency between LFM signals and gives us a parametric measure on the amount of the cross-terms in the LPP.
Keywords
polynomials; signal processing; time-frequency analysis; cross local polynomial periodogram; nonstationary signal; time-frequency correlative coefficient; Bismuth; Chirp modulation; Energy resolution; Fourier transforms; Helium; Polynomials; Signal analysis; Signal processing; Spectrogram; Time frequency analysis;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location
Taipei
Print_ISBN
978-1-4244-3827-3
Electronic_ISBN
978-1-4244-3828-0
Type
conf
DOI
10.1109/ISCAS.2009.5117753
Filename
5117753
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