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    A Software-Defined Radio Transmitter for Variable-Coded Modulation on a CubeSat

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    Author
    Mullet, John
    Chair
    Thorsen, Denise L.
    Committee
    Raskovic, Dejan
    Bossert, Katrina
    Metadata
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    URI
    http://hdl.handle.net/11122/11873
    Abstract
    The large volume of satellites sharing the same spectrum and the complexities of communications in Low-Earth Orbit (LEO) pose challenges to the downlink of large volumes of data on a platform that is bandwidth, power, and time limited. LEO satellites operate in a highly variable communications environment due to variations in inter-satellite or satellite-to-ground geometries, weather, and interference. Therefore, there is motivation for implementing satellite communication techniques that manage these issues to increase the data throughput. One such technique is variable-coded modulation which shows improvement by taking advantage of the dynamic nature of a satellite link. As part of the Air Force Research Laboratory University Nanosatellite Program, and in collaboration with NASA, this project focuses on the development of an S-band software defined radio for CubeSats that utilizes variable-coded modulation defined by the Digital Video Broadcasting-Satellite-Second Generation standard. This project defense discusses the initial development and testing using GNU Radio, and the challenges for full implementation, as well as the current status of the transmitter, and future work.
    Description
    Master's Project (M.S.) University of Alaska Fairbanks, 2020
    Date
    2020-05
    Type
    Master's Project
    Collections
    Engineering

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