Analytic Signal Generation - Tips and Traps

Reilly, A, Frazer, G and Boashash, B (1994) Analytic Signal Generation - Tips and Traps. Ieee Transactions On Signal Processing, 42 11: 3241-3245. doi:10.1109/78.330385


Author Reilly, A
Frazer, G
Boashash, B
Title Analytic Signal Generation - Tips and Traps
Journal name Ieee Transactions On Signal Processing   Check publisher's open access policy
ISSN 1053-587X
Publication date 1994-11-01
Year available 1994
Sub-type Letter to editor, brief commentary or brief communication
DOI 10.1109/78.330385
Open Access Status Not yet assessed
Volume 42
Issue 11
Start page 3241
End page 3245
Total pages 5
Place of publication NEW YORK
Publisher IEEE
Language eng
Abstract In this correspondence we discuss methods to produce the discrete analytic signal from a discrete real-valued signal. Such an analytic signal is complex and contains only positive frequencies. Its projection onto the real axis is the same as the original signal. Our use stems from instantaneous-frequency estimation and time-frequency signal analysis problems. For these problems the negative frequency component of real signals causes unwanted interference. The task of designing a filter to produce an approximation to the ideal analytic signal is not as simple as its formulation might suggest. Our result is that the direct methods of zeroing the negative frequencies, or using Hilbert transform fitters, have undesirable defects. We present an alternative which is similar to the ''quadrature'' filters used in modem designs.
Keyword Kernels
Q-Index Code CX
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Letter to editor, brief commentary or brief communication
Collection: ResearcherID Downloads - Archived
 
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Citation counts: TR Web of Science Citation Count  Cited 43 times in Thomson Reuters Web of Science Article | Citations
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