Measurements and statistical analysis of the transmission channel between two wireless body area networks at 2.45GHz and 5.8GHz
Measurements and statistical analysis of the transmission channel between two wireless body area networks at 2.45GHz and 5.8GHz
复制标题
2.45GHz和5.8GHz两个无线体域网之间传输信道的测量和统计分析
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
P. Hall
中科院分区：
文献类型：
--
作者：
Z. H. Hu;Y. Nechayev;P. Hall
研究了2.45GHz和5.8GHz两个无线体域网络之间的干扰。在室内环境（标准办公室）中收集了一系列数据集，用于随机的现实活动和身体方向，并进行了统计分析。很明显，由于无线网络用户的位置和方向的变化，以及他们身体姿势的变化，路径增益会发生显著变化。使用卡方拟合优度检验来评估信号衰落是否属于已知的概率分布之一（即gamma， lognormal, loglogistic, Nakagami， Weibull和ician）。我们的研究结果表明，伽马分布是描述两个无线体域网络之间衰落的一个很好的候选。本文给出了干扰信号强度随距离变化的表征结果，以及一些重要的统计参数，包括平交率和平均衰落持续时间。
Interference between two wireless body area networks at 2.45GHz and 5.8GHz has been investigated. A series of data sets have been gathered in an indoor environment - standard office - for random realistic activities and body orientations, and have been subject to statistical analysis. It is clear that significant variations of the path gain can occur due to the changing positions and orientations of the wireless network users, and the changing postures of their bodies. Chi-square goodness-of-fit test was used to assess whether the signal fading belongs to one of a number of known of probability distributions (namely, gamma, lognormal, loglogistic, Nakagami, Weibull and Rician). Our results show that the gamma distribution is an excellent candidate for describing the fading between two wireless body area networks. This paper presents results of characterization of interfering signal strength variations with the distance, and a number of significant statistical parameters, including level crossing rate and average fade duration.