ZHANG Yan, SHENG Min, LI Jiandong, TIAN Ye, YAO Junliang and TANG Di. Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation[J]. Chinese Journal of Electronics, 2010, 19(2): 296-302.
Citation: ZHANG Yan, SHENG Min, LI Jiandong, TIAN Ye, YAO Junliang and TANG Di. Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation[J]. Chinese Journal of Electronics, 2010, 19(2): 296-302.

Network Lifetime Optimization under QoSConstrains for Coded Cooperative Networks byDynamic Resource Allocation

  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2010-04-05
  • Network lifetime optimization is a vital and
    challenging design issue for battery-operated wireless net-
    works, which guarantee uninterrupted information trans-
    mission in wireless networks. Fortunately, emerging as
    a new communication paradigm, cooperation communica-
    tion provides an e®ective way to share resource among net-
    work nodes that can be used to extend network lifetime. In
    this paper, the dynamic resource allocation strategies are
    introduced to optimize the network lifetime under Qual-
    ity of service (QoS) constraints for coded cooperative net-
    works, which consider power control, multi-relays selec-
    tion and Level of cooperation (LOC) adjustment jointly.
    An optimization model for minimizing and balancing the
    energy consumption under QoS constrains is formulated
    based on a TDMA scenario. When the LOC is constant,
    the closed form optimal solution is got by Karush-Kuhn-
    Tucker (KKT) conditions, which results in an optimal re-
    source allocation strategy. Based on the solution, a sub-
    optimal scheme is further proposed for a variable LOC.
    Simulation results show that our schemes can dramatically
    prolong network lifetime and support higher QoS levels
    compared with other existing cooperative resource alloca-
    tion schemes.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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