论文标题
可植入医疗设备的超声波反向散射通信
Ultrasonic Backscatter Communication for Implantable Medical Devices
论文作者
论文摘要
本文提出了一个超声波反向散射通信（USBC）用于无电植入医疗设备（IMD）的系统，该系统可以在没有电池的情况下运行，从而为未来的医疗保健提供多功能的革命性应用。提出的USBC系统由读者和标签组成。读者将询问脉冲发送到标签。标签基于压电传感器的压电效应对脉冲进行了反向散射。我们通过压电传感器的阻抗匹配为USBC提供了几种基本调制方案。为了减轻人体中其他散点的干扰，该标签通过编码映射传输信息位，读者在读者中的能量检测前执行编码字匹配。我们进一步得出了理论的比特率（BER）表达。蒙特卡洛模拟验证了理论分析，并表明被动USBC可以实现低ber且低复杂性，这对于尺寸和能量约束的IMD是可取的。
This paper proposes an ultrasonic backscatter communication (UsBC) system for passive implantable medical devices (IMDs) that can operate without batteries, enabling versatile revolutionary applications for future healthcare. The proposed UsBC system consists of a reader and a tag. The reader sends interrogation pulses to the tag. The tag backscatters the pulses based on the piezoelectric effect of a piezo transducer. We present several basic modulation schemes for UsBC by impedance matching of the piezo transducer. To mitigate the interference of other scatters in the human body, the tag transmits information bits by codeword mapping, and the reader performs codeword matching before energy detection in the reader. We further derive the theoretical bit-error rate (BER) expression. Monte Carlo simulations verify the theoretical analysis and show that passive UsBC can achieve low BER and low complexity, which is desirable for size- and energy-constrained IMDs.
