西南交通大学学报2024，Vol.59Issue(5)：1014-1022,9.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
Throughput Performance Analysis and Optimization of Energy Harvesting Wireless Sensor Network Based on Simultaneous Wireless Information and Power Transfer
摘要
Abstract
In view of two-hop multi-relay transmission in energy harvesting wireless sensor networks(WSN),a wireless radio frequency power beacon(PB)-assisted energy harvesting relay model based on simultaneous wireless information and power transfer(SWIPT)was constructed.Under the condition that the relay node has the characteristics of capturing the source node,loop self interference,and PB signal energy,the outage probability and throughput of the destination node using two different receiving strategies,namely,selection combining(SC)and maximal ratio combining(MRC),were derived.Then,under multiple constraints such as ensuring communication quality of service(QoS),a relay selection algorithm was proposed to jointly optimize the time switching factor and power splitting factor with the goal of maximizing the throughput.Simulation and numerical results show that the PB transmit power,time switching factor,number of antennas,and power splitting factor significantly affect the system's outage probability and throughput.When PB transmit power is 6 dBW,and the number of antennas is 3,compared with the random relay selection algorithm and the max-min relay selection algorithm,the system's throughput gains under the SC strategy are 0.29 and 0.15 bit/(s·Hz),respectively,and those under the MRC strategy are 0.32 and 0.16 bit/(s·Hz),respectively.关键词
无线传感器网络/无线携能通信/中继选择/能量收集/吞吐量Key words
wireless sensor networks/SWIPT/relay selection/energy harvesting/throughput分类
信息技术与安全科学引用本文复制引用
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,2024,59(5):1014-1022,9.基金项目
国家自然科学基金项目(62161016) （62161016）
甘肃省科技计划基金项目(20JR10RA273) （20JR10RA273）
