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    National Tsing Hua University Institutional Repository > 研究中心 > 電腦與通訊科技研發中心 > 技術報告 >  Lifetime Maximization for Amplify-and-Forward Cooperative Networks


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/13237


    Title: Lifetime Maximization for Amplify-and-Forward Cooperative Networks
    Authors: Wan-Jen Huang
    Yao-Win Hong
    Kuo, C.-C.J.
    Date: 2007
    Publisher: Institute of Electrical and Electronics Engineers Inc.
    Keywords: Lifetime Maximization
    Amplify-and-Forward
    Cooperative Networks
    Abstract: Power allocation strategies are devised to maximize the network lifetime of amplify-and-forward (AF) cooperative networks. We consider the scenario where one source and multiple partners cooperate to transmit messages to the destination. The powers emitted by the users are subject to the SNR requirement at the destination. First, the power allocation strategy that demands the minimum instantaneous aggregate transmit power of all cooperating partners is described and analyzed. The optimal solution results in a form of selective relaying; namely, the user with the best channel condition is selected to help in relaying the message. However, this instantaneous power minimization strategy does not necessarily maximize the lifetime of battery-limited systems. Then, we propose three AF cooperative schemes to exploit the channel state information (CSI), the residual battery energy and the QoS requirement. It is shown that the network lifetime can be extended considerably by taking all these three factors into account.
    Relation Link: http://www.ieee.org/portal/site
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/13237
    Appears in Collections:[電腦與通訊科技研發中心] 技術報告
    [通訊工程研究所] 會議論文
    [積體電路設計技術研發中心] 會議論文

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