摘要
为解决链状无线传感网络中存在的可靠性问题,提出基于判决反馈策略的可靠性分析方法。基于路径损耗、阴影衰落及小尺度衰落建立复合信道模型,提出链路可靠性、节点能量可用性、瞬时可靠性及平均无故障时间等可靠性指标并推导出其理论表达式的解析形式。通过仿真实验对理论分析的正确性进行验证,为链状拓扑无线传感网络的可靠性分析、评估与预测提供理论支持。
To solve the reliability problem in chained wireless sensor networks,a reliability analysis method based on decision feedback strategy was proposed to solve the reliability problem in chained wireless sensor networks.A composite channel model was established based on path loss,shadow fading and small scale fading.Reliability indexes such as link reliability,node energy availability,instantaneous reliability and mean time between failures(MTBF)were proposed and the analytical expressions of the theoretical expressions were deduced.The correctness of the theoretical analysis was verified by simulation experiment,which provided theoretical supports for the reliability analysis,evaluation and prediction of chain topology based wireless sensor networks.
出处
《计算机工程与设计》
北大核心
2017年第12期3224-3228,3235,共6页
Computer Engineering and Design
基金
河南省基础前沿基金项目(142300410108)
河南省科技攻关计划基金项目(162102210113)
关键词
链状拓补
无线传感器网络
网络可靠性
信道模型
判决反馈策略
chain topology
wireless sensor network
network reliability
channel fading model
decision feedback strategy
