User Cooperation for Energy-Efficient Cellular Communications
User Cooperation for Energy-Efficient Cellular Communications
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DOI：
10.1109/icc.2010.5501888
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
M. Nokleby;B. Aazhang
中科院分区：
文献类型：
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作者：
M. Nokleby;B. Aazhang
用户协作提高了无线系统的性能，但它需要其他用户花费能量充当中继站。当能源稀缺时，用户有动机为了节约资源而拒绝合作。因此，我们从能效的角度来研究协作通信。我们提出了一种蜂窝框架，在该框架中，希望与公共基站通信的两个移动用户可以通过解码转发中继进行协作。我们通过定义可实现的每能量位数区域并找到达到其帕累托边界的功率分配来最大化用户的每能量位数效率。为了找到一种有效的方法来激励自私的用户合作，我们应用博弈论，找到实现纳什讨价还价解的权力分配。数值结果表明，纳什协议提供了一种公平和有效的折衷方案，两个用户通过合作获得了显著提高的比特/能量效率
User cooperation improves performance in wireless systems, but it requires other users to expend energy acting as relays. When energy is scarce, users have incentive to refuse to cooperate in order to conserve resources. Therefore, we investigate cooperative communications from an energy- efficiency perspective. We present a cellular framework in which two mobile users, who desire to communicate with a common base station, may cooperate via decode-and-forward relaying. We maximize users' bits-per-energy efficiency by defining the achievable bits-per-energy region and finding the power allocations that achieve its Pareto boundary. To find an efficient approach that gives selfish users incentive to cooperate, we apply game theory, finding the power allocations that achieve the Nash bargaining solution. Numerical results indicate that the Nash bargain provides a fair and efficient compromise and that both users obtain noticeably improved bits-per-energy efficiency via cooperation