Persistent Link:
http://hdl.handle.net/10150/609699
Title:
DIGITAL CPFSK TRANSMITTER AND NONCOHERENT RECEIVER/DEMODULATOR IMPLEMENTATION
Author:
Otto, Eric S.
Affiliation:
New Mexico State University
Issue Date:
1997-10
Rights:
Copyright © International Foundation for Telemetering
Collection Information:
Proceedings 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.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
As radio frequency communications continue to grow, the available frequency spectrum becomes a valuable commodity, and as such may best be utilized in smaller and smaller increments. Hence, bandwidth efficient modulation schemes are desirable in that they allow better use of the frequency spectrum. Previous research has considered the spectral efficiency characteristics of several modulation schemes. It can be shown that eight- and 16-level Continuous Phase Frequency Shift Keying (CPFSK) can achieve 2 bits/s/Hz spectral efficiency packing density with an Eb/No of 12 dB specified at a 10^(-5) bit error rate [2]. In addition to its spectral characteristics, CPFSK possesses two other appealing characteristics. First, CPFSK maintains a constant amplitude signal, which is appropriate for nonlinear channels, as it will experience fewer adverse effects than a non-constant envelope signal. Hence, a nonlinear high power amplifier in the signal path is acceptable. Second, the information in a CPFSK signal can be retrieved via non-coherent demodulation, which is appropriate for multipath fading channels. This paper describes a low cost implementation of a CPFSK transmitter and noncoherent receiver based around the Motorola DSP56002 (56K) digital signal processor. In addition to the features associated with CPFSK, this implementation requires little power and is physically small and thus is suitable for many telemetry applications.
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleDIGITAL CPFSK TRANSMITTER AND NONCOHERENT RECEIVER/DEMODULATOR IMPLEMENTATIONen_US
dc.contributor.authorOtto, Eric S.en
dc.contributor.departmentNew Mexico State Universityen
dc.date.issued1997-10-
dc.rightsCopyright © International Foundation for Telemeteringen
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
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractAs radio frequency communications continue to grow, the available frequency spectrum becomes a valuable commodity, and as such may best be utilized in smaller and smaller increments. Hence, bandwidth efficient modulation schemes are desirable in that they allow better use of the frequency spectrum. Previous research has considered the spectral efficiency characteristics of several modulation schemes. It can be shown that eight- and 16-level Continuous Phase Frequency Shift Keying (CPFSK) can achieve 2 bits/s/Hz spectral efficiency packing density with an Eb/No of 12 dB specified at a 10^(-5) bit error rate [2]. In addition to its spectral characteristics, CPFSK possesses two other appealing characteristics. First, CPFSK maintains a constant amplitude signal, which is appropriate for nonlinear channels, as it will experience fewer adverse effects than a non-constant envelope signal. Hence, a nonlinear high power amplifier in the signal path is acceptable. Second, the information in a CPFSK signal can be retrieved via non-coherent demodulation, which is appropriate for multipath fading channels. This paper describes a low cost implementation of a CPFSK transmitter and noncoherent receiver based around the Motorola DSP56002 (56K) digital signal processor. In addition to the features associated with CPFSK, this implementation requires little power and is physically small and thus is suitable for many telemetry applications.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123-
dc.identifier.issn0074-9079-
dc.identifier.urihttp://hdl.handle.net/10150/609699-
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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