All Stories

  1. RFID Harmonics-Based Sub-Millimeter Vibration Sensing

    Article • ACM Transactions on Sensor Networks, November 2025, ACM (Association for Computing Machinery)

    Feiyu Han

  2. freeDoppler : A Doppler Effect Learning Network for Accurate RF-based Velocity Estimation

    Article • ACM Transactions on Sensor Networks, October 2025, ACM (Association for Computing Machinery)

    Feiyu Han

  3. Location-aware Inaudible Attack Defense Towards Smart Speakers

    Article • ACM Transactions on Sensor Networks, June 2025, ACM (Association for Computing Machinery)

    Feiyu Han

  4. freeGait: Liberalizing Wireless-based Gait Recognition to Mitigate Non-gait Human Behaviors

    Article • October 2024, ACM (Association for Computing Machinery)

    Feiyu Han

  5. EarSpeech: Exploring In-Ear Occlusion Effect on Earphones for Data-efficient Airborne Speech Enhancement

    Article • Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies, August 2024, ACM (Association for Computing Machinery)

    Feiyu Han

  6. MultiRider: Enabling Multi-Tag Concurrent OFDM Backscatter by Taming In-band Interference

    Article • June 2024, ACM (Association for Computing Machinery)

    Feiyu Han

  7. In-ear acoustic-based sleep activity recognition and sleep stage detection.

    Article • Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies, May 2024, ACM (Association for Computing Machinery)

    Feiyu Han

  8. Accuth+: Accelerometer-Based Anti-Spoofing Voice Authentication on Wrist-Worn Wearables

    Article • IEEE Transactions on Mobile Computing, May 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Feiyu Han

  9. Room-Scale WiFi Sensing System for Respiration Detection Based on Single-Antenna

    Article • ACM Transactions on Sensor Networks, November 2023, ACM (Association for Computing Machinery)

    Youwei Zhang, Feiyu Han

  10. an accelerometer-based voice authentication

    Article • November 2022, ACM (Association for Computing Machinery)

    Feiyu Han