SDR-Lite enables commodity WiFi to receive ambient (i.e., non-WiFi) signals. For example, drone signal. SDR-Lite lets typical WiFi to be used as unauthorized UAV detector, spectrum analyzer, and mobile IoT data collector.

GateScatter is the first backscatter-based gateway that converts IoT messages into WiFi packets, for pervasive Internet connectivity. GateScatter works with major commodity IoTs like Samsung SmartThings and Amazon Echo.

Safeguarding low power IoT (ZigBee) under heavy WiFi interference. This work enables seamless IoT operation even when hundreds of WiFi users are watching YouTube and playing online games.

Communication between different IoT technologies (Bluetooth and ZigBee) using only commercial devices. ZigBee smart lightbulb is controlled with Bluetooth smartphone. This work is a key to ubiquitous computing.

We use commodity WiFi AP to coordinate WiFi and IoT devices, to better utilize the spectrum. This work demonstrates how existing systems (WiFi AP) assist emerging IoT.

For the first time, SDR-Lite enables commodity WiFi to receive ambient (i.e., non-WiFi) signals. For example, drone signal. SDR-Lite lets typical WiFi to be used as unauthorized UAV detector, spectrum analyzer, and mobile IoT data collector.

SuperSight: Sub-cm NLOS Localization for mmWave Backscatter (Best Paper Award)

Subcentimeter Localization from Behind the Wall (Invited)

Extreme Sensitivity mmWave Backscattering Using Commodity FMCW Radar (Invited)

Hawkeye: Hectometer-range Subcentimeter Localization for Large-scale mmWave Backscatter (Best Paper Finalist)