Annu Int Conf IEEE Eng Med Biol Soc. 2017 Jul;2017:702-705. doi: 10.1109/EMBC.2017.8036921.
Human body communication (HBC), which uses the human body as a transmission medium for electrical signals, provides a prospective communication solution for body sensor networks (BSNs). In this paper, an inhomogeneous model which includes the tissue layers of skin, fat, and muscle is proposed to study the propagation characteristics of different HBC channels. Specifically, the HBC channels, namely, the on-body to on-body (OB-OB)channel, on-body to in-body (OB-IB) channel, in-body to on-body (IB-OB) channel, and in-body to in-body (IB-IB)channel, are studied over different frequencies (from 1MHz to 100MHz) through numerical simulations with finite-difference time-domain (FDTD) method. The results show that the gain of OB-IB channel and IB-OB channel is almost the same. The gain of IB-IB channel is greater than other channels in the frequency range 1MHz to 70MHz. In addition, the gain of all channels is associated with the channel length and communication frequency. The simulations are verified by experimental measurements in a porcine tissue sample. The results show that the simulations are in agreement with the measurements.
人体通信（HBC）利用人体作为电信号的传输介质，为人体传感器网络（BSN）提供了一种有前景的通信解决方案。本文提出了一种包含皮肤、脂肪和肌肉组织层的非均匀模型，以研究不同人体通信信道的传播特性。具体而言，通过有限时域差分（FDTD）方法进行数值模拟，研究了不同频率（从1MHz到100MHz）下的人体通信信道，即体表到体表（OB-OB）信道、体表到体内（OB-IB）信道、体内到体表（IB-OB）信道和体内到体内（IB-IB）信道。结果表明，OB-IB信道和IB-OB信道的增益几乎相同。在1MHz至70MHz的频率范围内，IB-IB信道的增益大于其他信道。此外，所有信道的增益都与信道长度和通信频率相关。通过在猪组织样本中的实验测量对模拟结果进行了验证。结果表明，模拟结果与测量结果一致。
