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dc.contributor.authorLebowitz, S. H.
dc.date.accessioned2016-04-14T21:20:02Zen
dc.date.available2016-04-14T21:20:02Zen
dc.date.issued1972-10en
dc.identifier.issn0884-5123en
dc.identifier.issn0074-9079en
dc.identifier.urihttp://hdl.handle.net/10150/605389en
dc.descriptionInternational Telemetering Conference Proceedings / October 10-12, 1972 / International Hotel, Los Angeles, Californiaen_US
dc.description.abstractDigital computer simulation of communication systems have been gaining wide acceptance and usage as a tool for analysis. In some cases, when the number of independent parameters is large or the processes are highly nonlinear, it is the only viable technique. In most digital computer simulations, the digital representation of bandpass filters can impose serious synthesis problems when conventional digital filter synthesis techniques are utilized. It is shown that the use of a complex (real and imaginary) technique of digital filter synthesis can eliminate several of the synthesis problems associated with conventional techniques. Three applications of the com lex technique are described in this paper. The three applications discussed in this paper are listed below with a short description of each. 1. A lowpass-to-bandpass transformation is described that preserves all lowpass characteristics of the filter. For instance the gain and group delay functions remain symmetrical for any center frequency and bandwidth. 2. The synthesis of analytic representations of real signals can be easily achieved by the use of a complex digital filter. An important advantage of analytic signals is that their envelope and phase are instantaneously available. 3. Equalization of bandpass characteristics can be effected at lowpass and then shifted to the proper frequency without any undesirable warping effects. Complex digital filter synthesis has been described previously, but very little emphasis has been placed on the application of this technique. Advances in the art of miniature high speed digital circuitry will allow the advantages of complex filtering to be realized in actual systems as well as digital simulations.
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.language.isoen_USen
dc.publisherInternational Foundation for Telemeteringen
dc.relation.urlhttp://www.telemetry.org/en
dc.rightsCopyright © International Foundation for Telemeteringen
dc.titleTHE COMPLEX DIGITAL FILTER AND ITS APPLICATIONS IN DIGITAL SIGNAL PROCESSINGen_US
dc.typetexten
dc.typeProceedingsen
dc.contributor.departmentComputer Sciences Corporationen
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
refterms.dateFOA2018-07-03T16:03:21Z
html.description.abstractDigital computer simulation of communication systems have been gaining wide acceptance and usage as a tool for analysis. In some cases, when the number of independent parameters is large or the processes are highly nonlinear, it is the only viable technique. In most digital computer simulations, the digital representation of bandpass filters can impose serious synthesis problems when conventional digital filter synthesis techniques are utilized. It is shown that the use of a complex (real and imaginary) technique of digital filter synthesis can eliminate several of the synthesis problems associated with conventional techniques. Three applications of the com lex technique are described in this paper. The three applications discussed in this paper are listed below with a short description of each. 1. A lowpass-to-bandpass transformation is described that preserves all lowpass characteristics of the filter. For instance the gain and group delay functions remain symmetrical for any center frequency and bandwidth. 2. The synthesis of analytic representations of real signals can be easily achieved by the use of a complex digital filter. An important advantage of analytic signals is that their envelope and phase are instantaneously available. 3. Equalization of bandpass characteristics can be effected at lowpass and then shifted to the proper frequency without any undesirable warping effects. Complex digital filter synthesis has been described previously, but very little emphasis has been placed on the application of this technique. Advances in the art of miniature high speed digital circuitry will allow the advantages of complex filtering to be realized in actual systems as well as digital simulations.


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