室内无线传感器网络信道传输模型及统计分析

无线传感器网络在室内的应用越来越广泛,然而相应的无线信道衰落模型的研究却尚未成熟.为此,针对典型的住宅和办公环境进行了无线传感器节点的信道传输衰落特性测试,并对测试数据进行了拟合和建模.拟合结果表明,在大尺度衰落的情况下,所提出的三阶多项式对数距离路径损耗模型能够更好地表征室内环境下的信道衰落情况,对研究室内无线传感器网络的关键技术具有重要的参考价值.

Transmission model and statistical analysis for indoor wireless sensor network channels

Wireless sensor networks are more widely used in indoor environments. However, the study of wireless channel fading model is not yet mature. Therefore, for the typical office and residential environments, the fading characteristics of channel transmission for wireless sensor nodes are tested, the testing data are fitted, and the corresponding model is presented. The fitting results show that, in the case of large-scale fading, the proposed three-order polynomial logarithmic distance path loss model can better characterize the channel fading in the indoor environment. The proposed model and analytical results have important significance for the key technology of indoor wireless sensor networks.