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Implementation of a protocol and channel coding strategy for use in ground-satellite applications
Thesis (MScEng)--Stellenbosch University, 2012.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867614118669713408 |
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| access_status_str | Open Access |
| author | Wiid, Riaan |
| author2 | Wolhuter, R. |
| author_browse | Wiid, Riaan Wolhuter, R. |
| author_facet | Wolhuter, R. Wiid, Riaan |
| author_sort | Wiid, Riaan |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MScEng)--Stellenbosch University, 2012. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/20346 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:46:57.306Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/20346 Implementation of a protocol and channel coding strategy for use in ground-satellite applications Wiid, Riaan Wolhuter, R. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Low-density parity-check (LDPC) Forward error correction (FEC) Satellites Field programmable gate array (FPGA) Dissertations -- Electronic engineering Theses -- Electronic engineering Geographic information systems. Satellites -- Agricultural applications Thesis (MScEng)--Stellenbosch University, 2012. ENGLISH ABSTRACT: A collaboration between the Katholieke Universiteit van Leuven (KUL) and Stellenbosch University (SU), resulted in the development of a satellite based platform for use in agricultural sensing applications. This will primarily serve as a test platform for a digitally beam-steerable antenna array (SAA) that was developed by KUL. SU developed all flight - and ground station based hardware and software, enabling ground to flight communications and interfacing with the KUL SAA. Although most components had already been completed at the start of this M:Sc:Eng: project, final systems integration was still unfinished. Modules necessary for communication were also outstanding. This project implemented an automatic repeat and request (ARQ) strategy for reliable file transfer across the wireless link. Channel coding has also been implemented on a field programmable gate array (FPGA). This layer includes an advanced forward error correction (FEC) scheme i.e. a low-density parity-check (LDPC), which outperforms traditional FEC techniques. A flexible architecture for channel coding has been designed that allows speed and complexity trade-offs on the FPGA. All components have successfully been implemented, tested and integrated. Simulations of LDPC on the FPGA have been shown to provide excellent error correcting performance. The prototype has been completed and recently successfully demonstrated at KUL. Data has been reliably transferred between the satellite platform and a ground station, during this event. AFRIKAANSE OPSOMMING: Tydens ’n samewerkingsooreenkoms tussen die Katholieke Universiteit van Leuven (KUL) en die Universiteit van Stellenbosch (US) is ’n satelliet stelsel ontwikkel vir sensor-netwerk toepassings in die landbou bedryf. Hierdie stelsel sal hoofsaaklik dien as ’n toetsmedium vir ’n digitaal stuurbare antenna (SAA) wat deur KUL ontwikkel is. Die US het alle hardeware en sagteware komponente ontwikkel om kommunikasie d.m.v die SAA tussen die satelliet en ’n grondstasie te bewerkstellig. Sedert die begin van hierdie M:Sc:Ing: projek was die meeste komponente alreeds ontwikkel en geïmplementeer, maar finale stelselsintegrasie moes nog voltooi word. Modules wat kommunikasie sou bewerkstellig was ook nog uistaande. Hierdie projek het ’n ARQ protokol geïmplementeer wat data betroubaar tussen die satelliet en ’n grondstasie kon oordra. Kanaalkodering is ook op ’n veld programmeerbare hekskikking (FPGA) geïmplementeer. ’n Gevorderde foutkorrigeringstelsel, naamlik ’n lae digtheids pariteit toetskode (LDPC), wat tradisionele foutkorrigeringstelsels se doeltreffendheid oortref, word op hierdie FPGA geïmplementeer. ’n Kanaalkoderingsargitektuur is ook ontwikkel om die verwerkingspoed van data en die hoeveelheid FPGA logika wat gebruik word, teenoor mekaar op te weeg. Alle komponente is suksesvol geïmplementeer, getoets en geïntegreer met die hele stelsel. Simulasies van LDPC op die FPGA het uistekende foutkorrigeringsresultate gelewer. ’n Werkende prototipe is onlangs voltooi en suksesvol gedemonstreer by KUL. Betroubare data oordrag tussen die satelliet en die grondstasie is tydens hierdie demonstrasie bevestig. 2012-03-09T14:15:47Z 2012-03-30T11:05:57Z 2012-03-09T14:15:47Z 2012-03-30T11:05:57Z 2012-03 Thesis http://hdl.handle.net/10019.1/20346 en_ZA Stellenbosch University 131 p. : ill. application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Low-density parity-check (LDPC) Forward error correction (FEC) Satellites Field programmable gate array (FPGA) Dissertations -- Electronic engineering Theses -- Electronic engineering Geographic information systems. Satellites -- Agricultural applications Wiid, Riaan Implementation of a protocol and channel coding strategy for use in ground-satellite applications |
| title | Implementation of a protocol and channel coding strategy for use in ground-satellite applications |
| title_full | Implementation of a protocol and channel coding strategy for use in ground-satellite applications |
| title_fullStr | Implementation of a protocol and channel coding strategy for use in ground-satellite applications |
| title_full_unstemmed | Implementation of a protocol and channel coding strategy for use in ground-satellite applications |
| title_short | Implementation of a protocol and channel coding strategy for use in ground-satellite applications |
| title_sort | implementation of a protocol and channel coding strategy for use in ground satellite applications |
| topic | Low-density parity-check (LDPC) Forward error correction (FEC) Satellites Field programmable gate array (FPGA) Dissertations -- Electronic engineering Theses -- Electronic engineering Geographic information systems. Satellites -- Agricultural applications |
| url | http://hdl.handle.net/10019.1/20346 |
| work_keys_str_mv | AT wiidriaan implementationofaprotocolandchannelcodingstrategyforuseingroundsatelliteapplications |