Experimental assessment of human-body-like tissue as a communication channel for galvanic coupling
Experimental assessment of human-body-like tissue as a communication channel for galvanic coupling
复制标题
类人体组织作为电耦合通信通道的实验评估
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Christopher C. Yu
中科院分区：
文献类型：
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作者：
W. Tomlinson;Fabian Abarca;K. Chowdhury;M. Stojanovic;Christopher C. Yu
最近植入式和可穿戴医疗设备的激增为实现体内网络（IBN）铺平了道路。由于身体组织内的吸收，传统的基于RF的技术在无线连接此类设备方面存在不足。另一种不同的方法被称为电流耦合，它利用自然传导组织内的弱电流来实现体内通信。这项工作的重点是信道特性的人体组织考虑传播的电信号通过它携带的数据。使用猪组织（代替实际的人体组织）与皮肤、脂肪和肌肉层在100 kHz至1 MHz的频率范围内进行实验。利用单载波BPSK调制的伪随机噪声序列实现了一个相关信道探测系统，包括：（1）信道冲激响应和频率响应的测量，（2）噪声分析和容量估计，（3）与现有模型的比较。
The recent surge of implantable and wearable medical devices have paved the way for realizing intra-body networks (IBNs). Traditional RF-based techniques fall short in wirelessly connecting such devices owing to absorption within body tissues. A different approach is known as galvanic coupling, which employs weak electrical current within naturally conducting tissues to enable intra-body communication. This work is focused on channel characterization of the human body tissues considering the propagation of such electrical signals through it that carry data. Experiments were conducted using porcine tissue (in lieu of actual human tissue) with skin, fat and muscle layers in the frequency range of 100 kHz to 1 MHz. By utilizing single-carrier BPSK modulated Pseudorandom Noise Sequences, a correlative channel sounding system was implemented, leading to the following contributions: (1) measurements of the channel impulse and frequency response, (2) a noise analysis and capacity estimation, and (3) the comparison of results with existing models.