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dc.contributor.authorPerrins, Erik
dc.date.accessioned2016-03-30T21:24:38Zen
dc.date.available2016-03-30T21:24:38Zen
dc.date.issued2006-10en
dc.identifier.issn0884-5123en
dc.identifier.issn0074-9079en
dc.identifier.urihttp://hdl.handle.net/10150/604075en
dc.descriptionITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, Californiaen_US
dc.description.abstractThe existing offset quadrature phase shift keying (OQPSK) differential encoder in IRIG-106 is a curious scheme with a rather mysterious origin. In this paper, an alternative scheme known as double differential encoding is proposed. In many aspects, the proposed scheme has equivalent performance to the existing scheme: it successfully resolves the 4-phase ambiguity introduced by most carrier phase tracking loops and it also produces two decoded bit errors for each detection error. However, the proposed scheme has a number of conceptual advantages: it can be derived easily from first principles, it decouples the operations of even-bit/odd-bit demultiplexing and differential encoding, and it greatly simplifies the overly-complicated binary-to-ternary symbol mapping for OQPSK. It is also demonstrated to have tangible benefits, such as improved performance in systems with error control coding.
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.titleEVERYTHING YOU WANTED TO KNOW ABOUT DOUBLE DIFFERENTIAL ENCODERS BUT WERE AFRAID TO ASKen_US
dc.typetexten
dc.typeProceedingsen
dc.contributor.departmentUniversity of Kansasen
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.dateFOA2018-09-11T07:54:01Z
html.description.abstractThe existing offset quadrature phase shift keying (OQPSK) differential encoder in IRIG-106 is a curious scheme with a rather mysterious origin. In this paper, an alternative scheme known as double differential encoding is proposed. In many aspects, the proposed scheme has equivalent performance to the existing scheme: it successfully resolves the 4-phase ambiguity introduced by most carrier phase tracking loops and it also produces two decoded bit errors for each detection error. However, the proposed scheme has a number of conceptual advantages: it can be derived easily from first principles, it decouples the operations of even-bit/odd-bit demultiplexing and differential encoding, and it greatly simplifies the overly-complicated binary-to-ternary symbol mapping for OQPSK. It is also demonstrated to have tangible benefits, such as improved performance in systems with error control coding.


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