BodyWire: A 6.3-pJ/b 30-Mb/s-30-dB SIR-Tolerant Broadband Interference-Robust Human Body Communication Transceiver Using Time Domain Interference Rejection
BodyWire: A 6.3-pJ/b 30-Mb/s-30-dB SIR-Tolerant Broadband Interference-Robust Human Body Communication Transceiver Using Time Domain Interference Rejection
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DOI：
10.1109/jssc.2019.2932852
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发表时间：
2019-10-01
影响因子：
5.4
通讯作者：
Sen, Shreyas
中科院分区：
文献类型：
--
作者：
Maity, Shovan;Chatterjee, Baibhab;Sen, Shreyas
人体通信 (HBC) 利用人体作为体内和周围设备之间的通信媒介，为传统体域网 (BAN) 中使用的无线电波通信提供了一种节能、安全的替代方案。然而，人体天线效应会导致人体受到环境干扰，从而影响 HBC 传输。大多数最先进的 HBC 收发器利用窄带调制技术使用不受干扰影响的频率进行通信。在本文中，我们使用电容终端和电压模式通信技术，将人体用作宽带 (BB) 通信通道，从而实现 BB HBC。集成双数据速率 (I-DDR) 接收器通过集成和定期采样利用时域干扰抑制 (TD-IR)，用于抗干扰的 BB HBC 操作。所提出的接收器可以实现更高的能量效率，因为它利用主体的全部带宽进行数据传输并且不需要任何调制/解调。 BB HBC 收发器采用 TSMC 65 纳米技术制造。测量结果显示，数据速率为 30 Mb/s 时，能效为 6.3 pJ/bit，信号干扰比 (SIR) 容限为 - 30 dB，与最先进的 HBC 收发器相比，能效高出 18 倍。
Human body communication (HBC) utilizes the human body as the communication medium between devices in and around the body, providing an energy-efficient, secure alternative to radio wave communication traditionally used in body area networks (BAN). However, the human antenna effect results in the human body picking up environmental interference affecting HBC transmissions. Most state-of-the-art HBC transceivers utilize narrowband modulation techniques to communicate using frequencies, which are not affected by interference. In this article, we use capacitive termination and voltage mode communication techniques to utilize the human body as a broadband (BB) communication channel enabling as a BB HBC. An integrating dual data rate (I-DDR) receiver utilizing time-domain interference rejection (TD-IR) through integration and periodic sampling is used for interference-robust BB HBC operation. The proposed receiver can achieve higher energy efficiency as it utilizes the full bandwidth of the body for data transmission and does not require any modulation/demodulation. The BB HBC transceiver is fabricated in the TSMC 65-nm technology. Measurement results show 6.3-pJ/bit energy efficiency at a data rate of 30 Mb/s with - 30-dB signal-to-interference ratio (SIR) tolerance, making it 18x energy efficient compared with state-of-the-art HBC transceivers.