Persistent Link:
http://hdl.handle.net/10150/612615
Title:
CONVOLUTIONAL CODING/VITERBI DECODING OF PCM/FM
Author:
Cox, T. F.; Nichols, M. H.
Affiliation:
Naval Weapons Center
Issue Date:
1983-10
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:
Tests were run with a binary PCM/FM transmission channel using limiter/discriminator detection and (7, 1/2) convolutional coding with Viterbi decoding. In all cases, soft decision decoding showed little or no improvement relative to hard decision, evidently because of the pops in the FM demodulator. Under optimum PCM/FM conditions, namely p-p deviation = 0.7 fs and IFBW = fs, the coding improvement at BER = 10^-6 was about 2.2 dB. The binary symbol rate in the transmission channel is fs. In the course of the test, it was discovered that with PCM/FM under optimum conditions, channel errors frequently occurred in pairs. This severely reduces the value of parity bit when used with uncoded PCM/FM and also degrades the Viterbi decoder performance by about 1 dB.
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.titleCONVOLUTIONAL CODING/VITERBI DECODING OF PCM/FMen_US
dc.contributor.authorCox, T. F.en
dc.contributor.authorNichols, M. H.en
dc.contributor.departmentNaval Weapons Centeren
dc.date.issued1983-10-
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.abstractTests were run with a binary PCM/FM transmission channel using limiter/discriminator detection and (7, 1/2) convolutional coding with Viterbi decoding. In all cases, soft decision decoding showed little or no improvement relative to hard decision, evidently because of the pops in the FM demodulator. Under optimum PCM/FM conditions, namely p-p deviation = 0.7 fs and IFBW = fs, the coding improvement at BER = 10^-6 was about 2.2 dB. The binary symbol rate in the transmission channel is fs. In the course of the test, it was discovered that with PCM/FM under optimum conditions, channel errors frequently occurred in pairs. This severely reduces the value of parity bit when used with uncoded PCM/FM and also degrades the Viterbi decoder performance by about 1 dB.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123-
dc.identifier.issn0074-9079-
dc.identifier.urihttp://hdl.handle.net/10150/612615-
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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