摘要
本文介绍了无线传感器网络的覆盖控制问题,针对理想状态下的模型不能满足实际城轨应用的需求,提出了无线传感器网络信道衰落在不确定情况下的室外信道模型。根据无线信道衰落模型的理论分析,得到信道衰落模型的各个参数,确定无线传感器网络室外信道模型。证明该衰落模型在实际网络的节点部署和节点定位中的作用优于其他无线信道衰落模型,在保证通信的情况下提高了节点覆盖率。
This thesis briefly describes the wireless sensor network coverage control problem, because ideal conditions for these models can not meet the actual needs of urban rail applications, wireless sensor networks proposed fading under uncertainty outdoor channel model. Fading wireless channel model based on theoretical analysis, to get all the channel fading model parameters, the outdoor wireless sensor network to determine the channel model. Prove that the decline in the actual model of the network node deployment and node localization in the role better than other wireless channel fading model. In the case of communications it ensures the increased coverage of the node.
出处
《无线通信技术》
2013年第3期25-28,共4页
Wireless Communication Technology
关键词
无线传感器网络
信号衰减
覆盖优化
城市轨道交通
wireless sensor networks
signal attenuation
coverage optimization
urban rail transit
