Skip to content
University of Maryland LibrariesDigital Repository at the University of Maryland
    • Login
    View Item 
    •   DRUM
    • A. James Clark School of Engineering
    • Institute for Systems Research Technical Reports
    • View Item
    •   DRUM
    • A. James Clark School of Engineering
    • Institute for Systems Research Technical Reports
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Hierarchical Coding of High Data Rate Video for ATM Networks

    Thumbnail
    View/Open
    TR_93-92.pdf (176.0Kb)
    No. of downloads: 340

    Date
    1993
    Author
    Sivarajan, R.
    Metadata
    Show full item record
    Abstract
    A hierarchical DCT-based system is presented that prioritizes and compresses high data rate video for transmission over cell-based ATM networks. The proposed system is both robust to cell loss, and efficient in bandwidth utilization. Cell loss due to network congestion can significantly deteriorate the visual quality of the received image. Various cell loss concealment techniques have been proposed in the literature. The system proposed here will significantly reduce complexity of cell loss concealment circuitry at the receiver.<P>ATM standards allow one bit for priorities; thus a two-level hierarchical scheme is examined. We also study performance for priorities greater than two. When the ATM network needs to drop cells due to congestion, the low- priority cells are dropped first. We assume that the high- priority cells are received without any cell loss whereas the low-priority cells are subject to a non-zero cell loss probability rate.<P>The transmission rate is the 130 Mbps H4 access rate. Due to this high rate, the coder is kept simple and only intrafield coding is considered. Variable length coding is utilized to noiselessly compress the data before transmission. Two lossless techniques are examined: adaptive Huffman coding and arithmetic coding. The codecs will be tested assuming a Markov source with varying orders of memory (as well as the memoryless case). Simulation results are used to judge performance of this hierarchical system.
    URI
    http://hdl.handle.net/1903/5470
    Collections
    • Institute for Systems Research Technical Reports

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility
     

     

    Browse

    All of DRUMCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister
    Pages
    About DRUMAbout Download Statistics

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility