66 citations · 106 across the 6 of their papers we have counts for
6 papers
How Much Does It Cost to Answer My Question? Benchmarking Cloud VLM-based VQA Systems
Henri Vanhuynegem, Weitao Xu, Yiran Shen +1
Vision-language models (VLMs) are becoming a practical backend for mobile visual question answering (VQA) systems, enabling smartphones and smart glasses to answer users' questions…
Nephalai: Towards LPWAN C-RAN with Physical Layer Compression
Jun Liu, Weitao Xu, Sanjay Jha +1
We propose Nephalai, a Compressive Sensing-based Cloud Radio Access Network (C-RAN), to reduce the uplink bit rate of the physical layer (PHY) between the gateways and the cloud se…
A Novel Emergency Light Based Smart Building Solution: Design, Implementation and Use Cases
Weitao Xu, Jin Zhang, Jun Young Kim +5
Deployment of Internet of Things (IoT) in smart buildings has received considerable interest from both the academic community and commercial sectors. Unfortunately, widespread adop…
H2B: Heartbeat-based Secret Key Generation Using Piezo Vibration Sensors
Qi Lin, Weitao Xu, Jun Liu +4
We present Heartbeats-2-Bits (H2B), which is a system for securely pairing wearable devices by generating a shared secret key from the skin vibrations caused by heartbeat. This wor…
Capacitor Based Activity Sensing for Kinetic Powered Wearable IoTs
Guohao Lan, Dong Ma, Weitao Xu +2
We propose a novel use of the conventional energy storage component, i.e., capacitor, in kinetic-powered wearable IoTs as a sensor to detect human activities. Since different activ…
Shake-n-Shack: Enabling Secure Data Exchange Between Smart Wearables via Handshakes
Yiran Shen, Fengyuan Yang, Bowen Du +3
Since ancient Greece, handshaking has been commonly practiced between two people as a friendly gesture to express trust and respect, or form a mutual agreement. In this paper, we s…