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基于SWIPT的能量收集WSN吞吐量性能分析及优化

李翠然 杨茜 谢健骊 吕安琪

李翠然, 杨茜, 谢健骊, 吕安琪. 基于SWIPT的能量收集WSN吞吐量性能分析及优化[J]. 西南交通大学学报. doi: 10.3969/j.issn.0258-2724.20220625
引用本文: 李翠然, 杨茜, 谢健骊, 吕安琪. 基于SWIPT的能量收集WSN吞吐量性能分析及优化[J]. 西南交通大学学报. doi: 10.3969/j.issn.0258-2724.20220625
LI Cuiran, YANG Qian, XIE Jianli, LYU Anqi. Throughput Performance Analysis and Optimization of Energy Harvesting Wireless Sensor Network Based on Simultaneous Wireless Information and Power Transfer[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20220625
Citation: LI Cuiran, YANG Qian, XIE Jianli, LYU Anqi. Throughput Performance Analysis and Optimization of Energy Harvesting Wireless Sensor Network Based on Simultaneous Wireless Information and Power Transfer[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20220625

基于SWIPT的能量收集WSN吞吐量性能分析及优化

doi: 10.3969/j.issn.0258-2724.20220625
基金项目: 国家自然科学基金(62161016);甘肃省科技计划基金(20JR10RA273)
详细信息
    作者简介:

    李翠然 (1975—),女,教授,博士,研究方向为高铁智能无线通信、无线传感器网络和协同通信技术,E-mail:licr@mail.lzjtu.cn

  • 中图分类号: TN925

Throughput Performance Analysis and Optimization of Energy Harvesting Wireless Sensor Network Based on Simultaneous Wireless Information and Power Transfer

  • 摘要:

    针对能量收集无线传感器网络(wireless sensor network,WSN)中的两跳多中继传输问题,构建无线射频能量站(power beacon,PB)辅助的能量收集无线携能通信(simultaneous wireless information and power transfer,SWIPT)中继模型. 在中继节点具有捕获源节点、环路自干扰和PB信号能量的特性下,推导目的节点采用选择式合并(selection combining,SC)、最大比合并(maximal ratio combining,MRC)两种不同接收策略下的中断概率和吞吐量,继而在保障通信服务质量(quality of service,QoS)、PB发射功率、能量转化效率等多约束条件下,提出一种以吞吐量最大化为目标的联合优化时隙切换因子与功率分配因子的中继选择算法. 仿真和数值结果显示:PB发射功率、时隙切换因子、天线数目、功率分配因子等参数对系统中断概率和吞吐量性能影响显著;当给定PB发射功率为6 dBW,天线为3根时,与随机中继选择算法和最大最小中继选择算法相比,本文算法在SC策略下的系统吞吐量增益分别为0.29、0.15 bit/s/Hz,MRC策略下的吞吐量增益分别为0.32、0.16 bit/(s·Hz).

     

  • 图 1  基于PS-SWIPT的EH-WSN系统模型

    Figure 1.  EH-WSN system model based on PS-SWIPT

    图 2  联合优化最优中继选择算法

    Figure 2.  Optimal relay selection algorithm by joint optimization

    图 3  MRC接收策略下循环次数对中断概率的影响

    Figure 3.  Effect of loop number on outage probability under MRC strategy

    图 4  不同PS因子的中断概率与吞吐量

    Figure 4.  Outage probability and throughput under different PS factors

    图 5  不同PB发射功率的中断概率

    Figure 5.  Outage probability for different PB transmit power

    图 6  不同天线数目的中断概率

    Figure 6.  Outage probability for different antenna numbers

    图 7  不同TS因子下的中断概率与吞吐量

    Figure 7.  Outage probability and throughput for different TS factors

    图 8  不同TS因子时各算法的吞吐量对比

    Figure 8.  Throughput comparison of different algorithms with different TS factors

    图 9  不同PB发射功率时各算法的吞吐量对比

    Figure 9.  Throughput comparison of different algorithms with different PB transmit power

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出版历程
  • 收稿日期:  2022-09-28
  • 修回日期:  2023-03-28
  • 网络出版日期:  2024-02-19

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