个体差异性对人体通信信道特性的影响研究  

Research on influence of individual difference on human bodycommunication channel characteristics

作　　者：周灵丽 廖薇 车克龙 李启行 刘海宽 ZHOU Lingli;LIAO Wei;CHE Kelong;LI Qihang;LIU Haikuan(School of Electronics and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)

机构地区：[1]上海工程技术大学电子电气工程学院,上海201620

出　　处：《传感器与微系统》2023年第1期19-22,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(62001282)。

摘　　要：不同人体间的差异对以人体为通信介质的无线通信技术的实际应用存在影响。现有关于人体通信(HBC)技术的研究对人体差异性考虑不多。首先,根据体质指数(BMI)建立超重、标准和偏瘦3种体质模型,设置以左胸为发射机的5条通信链路;然后,分析了男女在不同体质下的信道传输特性;最后,计算了不同模型在不同频段下的比吸收率(SAR)。结果表明:超重或偏瘦都会增大路径损耗;偏瘦女性模型的多径数目多于超重模型;偏瘦和超重男性模型在5条链路的多径数目趋势类似;电磁波信号在女性模型传输时产生的多径数目多于男性;SAR在不同模型也有不同的规律。研究人体差异性对通信信道的影响,为HBC技术更好的应用奠定了基础。The differences among different human bodies have an impact on the practical application of wireless communication technology that using human body as communication medium.The existing research on human body communication(HBC)technology considers less the difference of human body.Firstly,three models of overweight,standard and underweight are established according to body mass index(BMI),and five communication links with the left chest as the transmitter are set up.Then,the channel transmission characteristics of male and female under different constitution models are analyzed.Finally,the specific absorption rates(SAR)of different models in different frequency bands are calculated.The results show that both the overweight and the underweight can increase the path loss.The number of multipath in the thin female model is higher than that in the overweight model,and the multipath number trend of the underweight and the overweight male model is similar in the five links.The number of multipath generated by electromagnetic wave signal in female transmission is more than that of male.SAR also has different laws in different models.The research on the influence of human body difference on communication channel lays a foundation for the better application of HBC technology.

关 键 词：人体通信 体质指数 差异性 路径损耗 多径数目 比吸收率 

分 类 号：TN911[电子电信—通信与信息系统]