ECE Colloquium: Enabling Low-power Computation, Sensing, and Communication for the Internet-of-Things
Internet-of-Things (IoT) devices serve as gateways connecting the digital world to the physical world. Although we already have powerful tools to understand various data in the digital world, IoT devices are currently insufficient for capturing and processing large amounts of physical world data. In this talk, I will present two systems we built to address this problem. I will first present a low-power backscatter radio system designed for IoT. Our radio consumes 100~10x less power compared to existing WiFi radios. It does so by reflecting existing WiFi traffic in the air while embedding data. Then, I will present a runtime system that supports running large software tasks on intermittently powered computing platforms even when such platforms have tiny energy buffers. We demonstrate that our system significantly improves the operational regime of intermittently powered computing platforms.