Numerical Characterization and Modeling of Subject-Specific Ultrawideband Body-Centric Radio Channels and Systems for Healthcare Applications
Numerical Characterization and Modeling of Subject-Specific Ultrawideband Body-Centric Radio Channels and Systems for Healthcare Applications
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DOI：
10.1109/titb.2011.2177526
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发表时间：
2012-03-01
影响因子：
--
通讯作者：
Hao, Yang
中科院分区：
文献类型：
--
作者：
Abbasi, Qammer Hussain;Sani, Andrea;Hao, Yang
本文提出了一个特定主题的无线电传播研究和系统建模的无线体域网使用的仿真工具的基础上并行有限差分时域技术。这种技术非常适合模拟复杂的、不均匀的物体（如人体）周围的无线电传播。研究了不同数字幻象对在体无线信道和系统性能的影响。考虑到典型的医院环境，在3-10 GHz的频率下进行了模拟，并通过现场测量进行了验证，结果相当一致。分析表明，身体上的无线电信道和系统性能的特性是受试者特定的，并与人类的性别，身高和体重指数。路径损耗指数的最大变化几乎为18.51%，由于主题的变化，这给出了超过50%的系统误码率性能的变化。因此，为了实现以身体为中心的无线网络的节能且可靠的无线电链路和系统性能，有必要仔细考虑特定于受试者的参数。
The paper presents a subject-specific radio propagation study and system modeling in wireless body area networks using a simulation tool based on the parallel finite-difference time-domain technique. This technique is well suited to model the radio propagation around complex, inhomogeneous objects such as the human body. The impact of different digital phantoms in on-body radio channel and system performance was studied. Simulations were performed at the frequency of 3-10 GHz considering a typical hospital environment, and were validated by on-site measurements with reasonably good agreement. The analysis demonstrated that the characteristics of the on-body radio channel and system performance are subject-specific and are associated with human genders, height, and body mass index. Maximum variations of almost 18.51% are observed in path loss exponent due to change of subject, which gives variations of above 50% in system bit error rate performance. Therefore, careful consideration of subject-specific parameters are necessary for achieving energy efficient and reliable radio links and system performance for body-centric wireless network.