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首页> 外文期刊>Wireless Communications Letters, IEEE >Optimal Resource Allocation in Wireless Powered Relay Networks With Nonlinear Energy Harvesters
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Optimal Resource Allocation in Wireless Powered Relay Networks With Nonlinear Energy Harvesters

机译:具有非线性能量收集器的无线电力中继网络中的最佳资源分配

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This letter investigates a multiple-relay decode-and-forward (DF) network with simultaneous wireless information and power transfer (SWIPT). The relays use the power splitting (PS) technique to receive radio frequency (RF) energy and information simultaneously from the source. To characterize nonlinearity of energy harvesters at the relays, two existing models are adopted, which are the logistic function model and the constant-linear-constant (CLC) model. We target end-to-end throughput maximization by optimizing the power and bandwidth assignment for every source-relay-destination link and the PS ratio at every relay node. The formulated problems are demonstrated to be nonconvex. Through a series of analysis and transformations, we find global optimal solutions for the formulated problems. Numerical results verify the effectiveness of our proposed methods.
机译:这封信调查了具有同时无线信息和功率传输(SWIPT)的多中继解码转发(DF)网络。中继使用功率分配(PS)技术从源同时接收射频(RF)能量和信息。为了表征继电器能量收集器的非线性,采用了两个现有模型,即逻辑函数模型和恒定线性常数(CLC)模型。我们通过优化每个源-中继-目标链路的功率和带宽分配以及每个中继节点的PS比来实现端到端吞吐量最大化。所提出的问题被证明是非凸的。通过一系列分析和转换,我们找到了所提出问题的全局最优解。数值结果验证了我们提出的方法的有效性。

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