CAJ | 학술논문

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。
본문침대체역망내불동인체대대관2MHz，중심빈점433MHz，900MHz，이급2.4GHz적전파전파신도적실제측량득도적특정진행분석，학정불동인체소표현출적유일특정，유차작위인체신도지문신식，용우대인적신빈진행험증。소득분석결과표명，전파신도쇠감계수적통계특정화공솔적빈보특정，가이유효지용래검험인체신빈，준학도체75%이상。여차동시，연구환발현인체무선신도지문대우인체적천착，상대소재배경내적산사체분포화이동상태경위민감。본문적연구성과가위연발체역망용호신빈판정제공필요적실측삼고。
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.