Energy-Efficient Topology Control With Selective Diversity in Cooperative Wireless Ad Hoc Networks: A Game-Theoretic Approach
Energy-Efficient Topology Control With Selective Diversity in Cooperative Wireless Ad Hoc Networks: A Game-Theoretic Approach
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DOI：
10.1109/twc.2014.2325864
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发表时间：
2014-10
影响因子：
10.4
通讯作者：
B. Guo;Q. Guan;F. Yu;Shengming Jiang;Victor C. M. Leung
中科院分区：
文献类型：
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作者：
B. Guo;Q. Guan;F. Yu;Shengming Jiang;Victor C. M. Leung
由于移动终端的带宽稀缺和供电有限，无线通信的性能和能耗必须不断受到关注。协作传输提高了无线自组网（wanet）的容量性能。然而，当考虑能源效率时，用户合作优于非合作并不总是存在的，因为它涉及多个节点，传输过程中能耗更高。为了充分利用协作式wanet中用户合作的优势，提出了一种分布式节能选择分集（EESD）拓扑控制，该拓扑控制以每焦耳比特数为单位，综合考虑网络容量和能耗，以提高能源效率。esd考虑到信道信息交换的成本，通过合作方式（即分集）选择形成传输联盟。在此基础上，我们将EESD描述为一个联盟博弈，并提出了一种EESD自适应联盟形成算法，该算法证明了EESD的收敛性和稳定的联盟结构。仿真结果表明，与现有的拓扑控制方案相比，该方法在能量效率和网络寿命方面都有提高。
Due to the scarce bandwidth and limited power supply in mobile terminals, performance and energy consumption in wireless communications must be continually focused upon. Cooperative transmissions improve the capacity performance of wireless ad hoc networks (WANETs). However, when energy efficiency is considered, the advantage of user cooperation over non-cooperation does not always exist since it involves multiple nodes with more energy consumption in transmissions. To exploit the benefits of user cooperation in cooperative WANETs, we propose a distributed energy-efficient selective diversity (EESD) topology control to improve energy efficiency, which jointly considers network capacity and energy consumption in terms of bits per Joule. EESD forms transmission coalitions via cooperative manner (i.e, diversity) selection, by taking into account the cost of channel information exchange. We then formulate EESD as a coalition game and propose an adaptive coalition formation algorithm for EESD with proved convergence property and stable coalition structures. Simulation results show the performance improvement of EESD in energy efficiency and network lifetime compared to the existing topology control schemes.