A Crystal-less BodyID with an Asynchronous Clockless Leakage-Powered Wake-Up Receiver and Over-the-Channel Clock Recovery

📋 论文概要

本文提出一种无晶振的BodyID系统，采用异步无时钟的泄漏供电唤醒接收机，并通过过信道时钟恢复实现低功耗通信。该设计去除了传统收发器中始终运行的时钟，将空闲功耗降至泄漏级别，同时保持低延迟唤醒。

💡 主要创新点

• 提出无晶振架构，完全去除始终运行的时钟，消除空闲期间的功耗浪费。
• 采用泄漏供电的异步无时钟唤醒接收机，实现超低功耗唤醒功能。
• 利用过信道时钟恢复技术，在无本地时钟的情况下实现数据同步。

🏷 关键词

📄 原文摘要

Energy-constraint wireless transceivers with wake-up receivers (WuRX) traditionally rely on an always-running clock (Fig. 20.11.1) for sampling incoming data and digital correlation, necessitating local oscillator calibration through a reference, such as crystal oscillator. This consumes unnecessary power during idle periods and adds significant size and cost to the system. Removing the always-running clock can reduce system power consumption to leakage levels during idle, requiring innovative approaches to implement the wake-up functionality while maintaining low latency. The absence of the external clock reference can enhance energy efficiency and system integration but requires innovation in clock synchronization methods. Recent advances in the solid-state community targeting ultra-low-power (ULP) wearables have achieved notable energy efficiency and latency [1-19]. However, limitations remain in having an always-running clock and ULP clock

👥 作者与机构

Lingke Ding, Archisman Ghosh, Shreyas Sen

Purdue University, West Lafayette, IN