| 无线供能网络中数据收集的能量效率最大化方案 |
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| 引用本文： | 葛海江,俞湛威,池凯凯. 无线供能网络中数据收集的能量效率最大化方案[J]. 电信科学, 2019, 35(12): 49-56. DOI: 10.11959/j.issn.1000-0801.2019270 |
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| 作者姓名： | 葛海江 俞湛威 池凯凯 |
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| 作者单位： | 浙江工业大学计算机科学与技术学院,浙江杭州310023;杭州职业技术学院信息工程学院,浙江杭州310018;浙江工业大学计算机科学与技术学院,浙江杭州310023 |
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| 基金项目： | 国家自然科学基金资助项目(61872322);浙江省基础公益研究计划资助项目(LGG18F020005);浙江省高等教育十三五第二批教学改革研究项目（基于“1+X”书证融通的高职电子信息类人才培养模式研究） |
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| 摘 要： | 研究提出由多个射频能量源和汇聚节点组成的无线供能网络,通过联合最优化能量源的发送功率、能量发送时长和节点的数据发送时间,最大化数据收集的能量效率。首先对能量效率最大化问题进行建模。接着,分析得到发送功率的最优取值,并进一步推导出能量效率函数的单调性和吞吐量函数的凹凸性。最后,基于这些属性设计出联合使用黄金分割法和二分法的高效最优算法的快速得到最优解。仿真结果表明,相比于基准方法,所提出的最优算法能显著提高能量效率。
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| 关 键 词： | 无线供能网络 时间分配 能量效率 黄金分割法 二分法 |
Energy-efficiency maximization scheme for data collection in wireless power communication networks |
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| Haijiang GE,Zhanwei YU,Kaikai CHI. Energy-efficiency maximization scheme for data collection in wireless power communication networks[J]. Telecommunications Science, 2019, 35(12): 49-56. DOI: 10.11959/j.issn.1000-0801.2019270 |
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| Authors: | Haijiang GE Zhanwei YU Kaikai CHI |
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| Affiliation: | 1. School of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China;2. Institute of Information Engineering,Hangzhou Vocational ＆Technical College,Hangzhou 310018,China |
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| Abstract: | WPCN composed of multiple RF energy sources and sinks was studied.The energy efficiency of data collection were maximized by jointly optimizing the transmission power of energy sources,the time allocation of wireless energy transfer and the time allocation of nodes’ data transmission.Specifically,the energy efficiency maximization problem was modeled firstly.Then,the optimal value of transmitted power was obtained,and the monotonicity of energy-efficiency function and the convexity of throughput function were further deduced.Finally,based on these properties,an efficient algorithm which combines golden-section search and bisection search was designed to get the optimal solution quickly.The simulation results show that the proposed optimal algorithm can significantly improve the energy efficiency compared with the baseline scheme. |
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| Keywords: | wireless powered communication networks time allocation energy efficiency golden section search bisection search |
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