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3D Point Cloud Generation with Millimeter-Wave Radar

Emerging autonomous driving systems require reliable perception of 3D surroundings. Unfortunately, current mainstream perception modalities, i.e., camera and Lidar, are vulnerable under challenging lighting and weather conditions. On the other hand, …

RoS: Passive Smart Surface for Roadside-to-Vehicle Communication

Modern autonomous vehicles are commonly instrumented with radars for all-weather perception. Yet the radar functionality is limited to identifying the positions of reflectors in the environment. In this paper, we investigate the feasibility of …

Robust Multimodal Vehicle Detection in Foggy Weather using Complementary Lidar and Radar Signals

Vehicle detection with visual sensors like lidar and camera is one of the critical functions enabling autonomous driving. While they generate fine-grained point clouds or high-resolution images with rich information in good weather conditions, they …

AIRCODE: Hidden Screen-Camera Communication on an Invisible and Inaudible Dual Channel

Hidden screen-camera communication emerges as a key enabler for the next generation videos that allow side information, such as TV commercials, augmented contents, and even the video itself, to be delivered to machines during normal watching. To …

M-Cube: A Millimeter-Wave Massive MIMO Software Radio

Millimeter-wave (mmWave) technologies represent a cornerstone for emerging wireless network infrastructure, and for RF sensing systems in security, health, and automotive domains. Through a MIMO array of phased arrays with hundreds of antenna …

iVR: Integrated Vision and Radio Localization with Zero Human Effort

Smartphone localization is essential to a wide range of applications in shopping malls, museums, office buildings, and other public places. Existing solutions relying on radio fingerprints and/or inertial sensors suffer from large location errors and …

Zero-Effort Cross-Domain Gesture Recognition with Wi-Fi

Wi-Fi based sensing systems, although sound as being deployed almost everywhere there is Wi-Fi, are still practically difficult to be used without explicit adaptation efforts to new data domains. Various pioneering approaches have been proposed to …

Passenger Demand Prediction with Cellular Footprints

Accurate forecast of citywide passenger demand helps online car-hailing service providers to better schedule driver supplies. Previous research either uses only passenger order history and fails to capture the deep dependency of passenger demand, or …

Widar2.0: Passive Human Tracking with a Single Wi-Fi Link

This paper presents Widar2.0, the first WiFi-based system that enables passive human localization and tracking using a single link on commodity off-the-shelf devices. Previous works based on either specialized or commercial hardware all require …

Acousticcardiogram: Monitoring Heartbeats using Acoustic Signals on Smart Devices

Vital signs such as heart rate and heartbeat interval are currently measured by electrocardiograms (ECG) or wearable physiological monitors. These techniques either require contact with the patient’s skin or are usually uncomfortable to wear, …