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    Limits and Capabilities of Cooperative Diversity: A Network and Protocol Perspective

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    Author
    Bejarano Chavez, Oscar
    Date
    2011
    Advisor
    Knightly, Edward W.
    Degree
    Master of Science
    Abstract
    Physical-layer cooperation has been demonstrated to vastly improve wireless link reliability and end-to-end throughput by exploiting spatial diversity. Nevertheless, its performance in operational networking environments is uncertain. Cooperative link gains can be potentially diminished by factors such as i) increased transmission footprint due to the activity of the cooperative relay, ii) non-ideal node location due to the structure of a planned network, or iii) the inability of cooperation protocols to recognize the channel's global state, hence leading to increased congestion. In this work, we identify and evaluate these key factors affecting the performance of cooperative techniques in small- and large-scale topologies. Our evaluation reveals that throughput gains from cooperation achieved in atomic, isolated topologies, decrease significantly when implemented at network-scale scenarios. Furthermore, our study provides a deeper understanding of the regimes in which cooperation performs poorly, and can help in the design of effective protocol solutions for such cases.
    Keyword
    Electrical Engineering; Computer engineering
    Citation
    Bejarano Chavez, Oscar. "Limits and Capabilities of Cooperative Diversity: A Network and Protocol Perspective." (2011) Master’s Thesis, Rice University. https://hdl.handle.net/1911/64383.
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    • ECE Theses and Dissertations [597]
    • Rice University Electronic Theses and Dissertations [14030]

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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892
    Site Map