On amplitude and frequency demodulation using energy operators

Maragos, P; Kaiser, J; Quatieri, T

dc.contributor.author	Maragos, P	en
dc.contributor.author	Kaiser, J	en
dc.contributor.author	Quatieri, T	en
dc.date.accessioned	2014-03-01T01:41:42Z
dc.date.available	2014-03-01T01:41:42Z
dc.date.issued	1993	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/23588
dc.subject	Approximation Error	en
dc.subject	Discrete Time	en
dc.subject	Instantaneous Frequency	en
dc.subject	Theoretical Analysis	en
dc.subject	Time Varying	en
dc.title	On amplitude and frequency demodulation using energy operators	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/78.212729	en
heal.identifier.secondary	http://dx.doi.org/10.1109/78.212729	en
heal.publicationDate	1993	en
heal.abstract	It is shown that the nonlinear energy-tracking signal operator Ψ(x)=(dx/dt)2-xd 2x/dt2 and its discrete-time counterpart can estimate the AM and FM modulating signals. Specifically, Ψ can approximately estimate the amplitude envelope of AM signals and the instantaneous frequency of FM signals. Bounds are derived for the approximation errors, which are negligible under general realistic conditions. These results, coupled with the	en
heal.journalName	IEEE Transactions on Signal Processing	en
dc.identifier.doi	10.1109/78.212729	en