Weitao Xu

Assistant Professor, Department of Computer Science

City University of Hong Kong (CityU)


I'm an Assistant Professor at the Department of Computer Science at City University of Hong Kong. I worked as a Postdoctoral Research Associate at University of New South Wales (UNSW) from June 2017 to August 2019. I obtained my PhD degree from the University of Queensland in 2017 (advised by Prof. Neil Bergmann and Prof. Wen Hu). I received my B.E. degree in Communication Engineering and M.E. degree in Communication and Information System both from the School of Information Science and Engineering, Shandong University (SDU) , China, in 2010 and 2013, respectively.

[Recruitment] I'm leading the S2MC lab@CityU and continuously look for self-motivated PhD/Postdoc/RA to join us. I have relatively broad research interests, but generally my previous research focuses on IoT such as smart sensing, IoT security, wearables/AR/VR, application of LLM in IoT, wireless network etc (please visit our group website for more details). For current available PhD positions in my group. please visit Recruitment for more information.

Email: weitaoxu@cityu.edu.hk


  • Internet of Things (IoT)
  • Mobile Computing
  • IoT Security
  • Wearables/AR/VR
  • Large Language Model (LLM)
  • Low-power Wide-area Network (LPWAN)


  • PhD in Computer Science, 2017

    University of Queensland

  • MEng in Information System, 2013

    Shandong University

  • BEng in Communication Engineering, 2010

    Shandong University



Assistant Professor

City University of Hong Kong

Aug 2019 – Present Hong Kong


University of New South Wales

Jun 2017 – Aug 2019 Sydney, Australia

PhD candidate

University of Queensland

Oct 2013 – May 2017 Brisbane, Australia


*2024.02 Our paper entitled “RF-Egg: An RF Solution for Fine-Grained Multi-Target and Multi-Task Egg Incubation Sensing” was accpeted by MobiCom 2024. Congrats to Zehua Sun!

*2023.10 Our paper entitled “XGait: Cross-Modal Translation via Deep Generative Sensing for RF-based Gait Recognition” was accpeted by Sensys 2023. Congrats to Huanqi Yang!

*2022.12 Our paper entitled “EMGSense: A Low-Effort Self-Supervised Domain Adaptation Framework for EMG Sensing” was accpeted by Percom 2023. Congrats to Di Duan!

*2022.12 Our paper entitled “Uncovering User Interactions on Smartphones via Contactless Wireless Charging Side Channels” was accpeted by S&P 2023. Congrats to Tao Ni!

*2022.12 Our paper entitled “ChirpKey: A Chirp-level Information-based Key Generation Scheme for LoRa Networks via Perturbed Compressed Sensing” was accpeted by INFOCOM 2023. Congrats to Huanqi!

*2022.12 Our paper entitled “WashRing: An Energy-efficient and Highly Accurate Handwashing Monitoring System via Smart Ring” was accpeted by IEEE TMC!

*2022.9 Congrats to Zehua who recevied the Outstanding Academic Performnace Award and Huanqi who received the Research Tuition Scholarship!

*2022.7 We paper entitled “Eavesdropping Mobile App Activity via Radio Frequency Energy Harvesting” has been conditionally accepted by USENIX Security!, Congrats, Tao Ni!

*2022.6 We paper entitled “SwipePass: Acoustic-based Second-factor User Authentication for Smartphones” has been conditionally accepted by IMWUT 2022!, Congrats, Yongliang!

*2022.5 Our paper entitled “Recent Advances in LoRa: A Comprehensive Survey” has been accepted by ACM TOSN!, Congrats, Zehua!

*2022.4 Our paper entitled “Vehicle-Key: A Secret Key Establishment Scheme for LoRa-enabled IoV Communications” has been accepted by ICDCS 2022! Congrats, Huanqi!

*2022.3 Our paper entitled “Time-constrained Ensemble Sensing with Heterogeneous IoT Devices in Intelligent Transportation Systems” has been accepted by IEEE TITS!

*2022.2 Our paper entitled “i^2Key: A Cross-sensor Symmetric Key Generation System using Inertial Measurements and Inaudible Sound” has been accepted by IPSN 2022!

*2021.12 Our paper entitled “GASLA: Enhancing the Applicability of Sign Language Translation” has been accepted by INFOCOM 2022!