利用体域网电波传播信道进行个人身份验证（英文）  

Personal Authentication using Fingerprints of Radio Propagation for Wireless Intra-body Communications

作　　者：尹学锋[1] 陈佳静[1] 田梦[1] 张楠[1] 种稚萌[2] 

机构地区：[1]同济大学电子与信息工程学院,上海201804 [2]华为技术有限公司,西安710075

出　　处：《新型工业化》2013年第3期29-39,共11页The Journal of New Industrialization

基　　金：Doctoral Fund for New-teacher(20090072120015)

摘　　要：本文针对体域网内不同人体对带宽2MHz,中心频点433MHz,900MHz,以及2.4GHz的电波传播信道的实际测量得到的特征进行分析,确定不同人体所表现出的唯一特征,由此作为人体信道指纹信息,用于对人的身份进行验证。所得分析结果表明,传播信道衰减系数的统计特征和功率的频谱特征,可以有效地用来检验人体身份,准确度达75%以上。与此同时,研究还发现人体无线信道指纹对于人体的穿着,相对所在环境内的散射体分布和移动状态更为敏感。本文的研究成果可为研发体域网用户身份判定提供必要的实测参考。In this contribution, the measurements of intra-body radio propagation channel are conducted at carrier frequencies 433 MHz, 900MHz and 2.4GHz with bandwidth of 2 MHz for different persons. The objective is to find unique propagation characteristics which can be used as fingerprints for personal authentication. The experiment results obtained demonstrate that the distribution of the fading coe-cients of the intra-body channels, as well as the power frequency spectra exhibit distinguishable features which can be used to authenticate person’s identity. The measurements also show that by using the reference fingerprints in terms of power frequency spectra, the correct identification probability can be maintained at the level above 75%. Furthermore, it is found that the validity of reference fingerprints is more sensitive to the clothes that a person wears than to the displacement of scatterers in the environments and minor changes of the person’s posture.

关 键 词：体域网 人体电波传播信道 信道指纹 传播特征 身份识别 

分 类 号：TN9[电子电信—信息与通信工程] TP3[自动化与计算机技术—计算机科学与技术]