Coding performance on satellite channels using AX.25 protocol

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dc.contributor.authorJesser, William Augustusen
dc.contributor.committeechairPratt, Timothy J.en
dc.contributor.committeememberGray, Festus Gailen
dc.contributor.committeememberWoerner, Brian D.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:39:16Zen
dc.date.adate2009-06-30en
dc.date.available2014-03-14T21:39:16Zen
dc.date.issued1993-05-05en
dc.date.rdate2009-06-30en
dc.date.sdate2009-06-30en
dc.description.abstractA form of data transmission which is increasing in popularity is satellite communication. In order to insure that data is received correctly, certain error control strategies are employed. In packetized transmission, automatic-repeat-request (ARQ) schemes and error correcting codes have been employed. Currently a combination of both is not employed by the AX.25 protocol. The purpose of this project is to determine which error correcting code should be combined with ARQ to provide the optimum performance. This project investigates the performance of the (7,4) Hamming code, (23,12) Golay code, Reed-Solomon, RS , codes over the Galois fields of 16, GF(16), and 256, GF(256), elements, and common rate convolutional codes of various constraint lengths. The codes are evaluated on three primary criteria, which include: throughput vs. input bit error rate, coding complexity, and burst error performance. The class of Reed-Solomon codes over GF(256) was chosen to be superior due to the throughput and burst error performance. The encoding complexity is small, but the decoding is more complicated. The conclusion is that error correcting codes should be employed in ARQ satellite systems. However, the error correcting strength of the code must be determined by observing the channel characteristics.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 131 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-06302009-040244en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06302009-040244/en
dc.identifier.urihttp://hdl.handle.net/10919/43478en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1993.J477.pdfen
dc.relation.isformatofOCLC# 29040319en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1993.J477en
dc.subject.lcshData transmission systems -- Mathematical modelsen
dc.subject.lcshDirect broadcast satellite televisionen
dc.titleCoding performance on satellite channels using AX.25 protocolen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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