Conference and journal papers

• SPiDR: Ultra-low-power Acoustic Spatial Sensing for Micro-robot Navigation
  Y. Bai (Co-primary author), N. Garg (Co-primary author), N. Roy
  ACM MobiSys 2022
  ⭐Best paper award

• VoiceFind: Noise-Resilient Speech Recovery in Commodity Headphones
  I. Shahid, Y. Bai, N. Garg, N. Roy
  IASA workshop co-located with ACM MobiSys 2022

• Owlet: Enabling Spatial Information in Ubiquitous Acoustic Devices
  N. Garg (Co-primary author), Y. Bai (Co-primary author), N. Roy
  ACM MobiSys 2021

• BatComm: Enabling Inaudible Acoustic Communication with High-throughpput for Mobile Devices
  Y. Bai, J. Liu, L. Lu, Y. Yang, Y. Chen, J. Yu
  ACM SenSys 2020

• Acoustic-based Sensing and Applications: A Survey
  Y. Bai, Li Lu, J. Cheng, J. Liu, Y. Chen, J. Yu
  Computer Networks

Posters and demos

• Poster: Ultra-low-power Acoustic Imaging
  Y. Bai (Co-primary author), N. Garg (Co-primary author), N. Roy
  ACM MobiSys 2022

• Demo: Microstructure-guided Spatial Sensing for Low-power IoT
  N. Garg, Y. Bai (Co-primary author), N. Roy
  ACM MobiSys 2021
  ⭐Best demo award

• Poster: Inaudible High-throughput Communication Through Acoustic Signals
  Y. Bai, J. Liu, Y. Chen, L. Lu, J. Yu
  ACM MobiCom 2019
  ⭐Best poster runner-up award, student research competition winner

• Demo: Monitoring Movement Dynamics of Robot Cars and Drones Using Smartphone’s Built-in Sensors
  Y. Bai, X. Yang, C. Liu, J. Wain, R. Wang, J. Cheng, C. Wang, J. Liu, Y. Chen
  IEEE DySPAN 2019

Project: Acoustic-based Sensing and Applications

• Reviewed acoustic-based sensing in terms of hardware infrastructure, technical approaches, and its broad applications in recognition & tracking, localization & navigation, security & privacy, and communication
• Discussed future research directions and limitations of the acoustic-based sensing

Project: Inaudible High-throughput Acoustic Communication

• Designed an acoustic communication system, which achieves high-throughput and inaudibility simultaneously, and the highest throughput we achieve is 12 times higher than the state-of-the-art acoustic communication systems
• Modeled the non-linearity of the mobile device’s inbuilt microphone and use Orthogonal Frequency Division Multiplexing (OFDM) technique together with the non-linearity model to transmit data bits over multiple orthogonal channels with an ultrasound frequency carrier
• Proposed an algorithm to eliminate the unrelated residual signals induced by Amplitude Modulation (AM)

Project: Monitoring Movement Dynamics of Robot Cars and Drones

• Proposed a smart system that can monitor the movement dynamics of carrying platforms (i.e., robot cars and drones) leveraging the inertial sensors of the attached smartphone
• Monitored the movement dynamics of carrying platforms in real time, such as moving speed, displacement, and position
• Achieved real-time movement dynamics sharing with the backend server through WiFi connection