新视角下人体域网模型的二阶统计量  

The Second-Order Statistics of the Human Body Area Network Model from a New Perspective

作　　者：李冉[1] LI Ran(Xuzhou Vocational Technology Academy of Finance&Economics,Xuzhou 221008,China)

机构地区：[1]江苏省徐州财经高等职业技术学校,江苏徐州221008

出　　处：《现代信息科技》2020年第19期41-44,共4页Modern Information Technology

摘　　要：以往人体区域网络的应用都是一阶统计,文章采用可以跨越多个链路和人体区域的人体区域网网络,对其的无线信号进行二阶统计,并通过对特征参数的统计和测量,将得到的二阶特征频谱进行比较。最后基于一个庞大的,每天150小时的人体连接的数据库,这些数据证明了电平交叉率、平均衰减/非衰减持续时间相对于中值或平均信道增益方面给定值的缺陷。同时还对两参数的对数正态分布进行拟合分析,能够更简单、准确的对其进行描述。The application of human body area network(BAN)is the first-order statistics in the past.The article uses the second-order statistics of the wireless signals of BAN which can span multiple links and body areas.Through the statistics and measurement of characteristic parameters,the obtained second-order characteristic spectra are compared.Finally,based on a huge database of 150 hours of human connections per day,these data prove the shortcomings of the level crossover rate,the average attenuation/non-attenuation duration relative to the median or given value in terms of average channel gain.At the same time,the logarithmic normal distribution of the two parameters is fitted and analyzed,which can describe it more simply and accurately.

关 键 词：人体区域网络 信道建模 无线电传播 二阶统计 

分 类 号：TN929.5[电子电信—通信与信息系统]