Nanoscale Optical Wireless Channel Model for Intra-Body Communications: Geometrical, Time, and Frequency Domain Analyses
Nanoscale Optical Wireless Channel Model for Intra-Body Communications: Geometrical, Time, and Frequency Domain Analyses
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DOI：
10.1109/tcomm.2017.2787703
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发表时间：
2018-04-01
影响因子：
8.3
通讯作者：
Jornet, Josep Miquel
中科院分区：
文献类型：
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作者：
Johari, Pedram;Jornet, Josep Miquel
体内无线纳米传感器网络（iWNSNs）由具有前所未有的传感和驱动能力的通信微型设备组成，这些设备能够在人体内运行。iWNNs是新兴的医疗保健应用的基础，例如在亚细胞水平上的体内健康监测和生物过程的控制。纳米电子学、纳米光子学和无线通信领域的重大进展使iWNN中的纳米器件能够互连。在本文中，单个生物细胞和细胞组件的光波传播的纳米传感器的体内通信的影响进行了分析研究，在三个不同的方式，即，几何，时域和频域分析。通过对血浆内红细胞（RBC）的案例研究，利用全波电磁仿真对分析通道模型进行了验证。结果表明，红细胞表现为光学微透镜，将辐射光限制在一个焦点区域，这与最近的实验成果一致。它还表明，细胞的形状和大小的变化略有改变的信道脉冲响应。这项研究促进了体内纳米级光通信网络的新通信解决方案的开发，以及能够识别导致细胞形状改变的疾病的新纳米生物传感策略。
In vivo wireless nanosensor networks (iWNSNs) consist of communicating miniature devices with unprecedented sensing and actuation capabilities, which are able to operate inside the human body. iWNSNs are the basis of emerging healthcare applications, such as intrabody health-monitoring and control of biological processes at subcellular level. Major progress in the field of nanoelectronics, nanophotonics, and wireless communication is enabling the interconnection of the nanodevices in iWNSNs. In this paper, the effect of single biological cells and cell assemblies on the propagation of optical wave for intrabody communications of nanosensors is analytically investigated in three distinct ways, namely, geometrical, time-domain, and frequency-domain analyses. The analytical channel model is validated by means of full wave electromagnetic simulations through a case study for red blood cells (RBCs) inside the blood plasma. The results show that RBCs perform as optical microlenses that confine the radiated light on a focal area, which agrees with recent experimental achievements. It is also shown that changes in shape and size of the cells slightly alter the channel impulse response. This study motivates the development of new communication solutions for intrabody nanoscale optical communication networks and new nanobiosensing strategies able to identify diseases which cause cell shape alterations.