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, IoT+AI, 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
  • Wearable Devices
  • 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!