Freddy Yifei Liu

I am a first year PhD student at Carnegie Mellon University, co-advised by Prof. Swarun Kumar and Prof. Justin Chan. My research interests are broadly around developing novel sensing technologies for mobile and wireless systems.

Previously, I worked with Prof. Mingmin Zhao at the University of Pennsylvania and Prof. Lili Qiu at Microsoft Research Asia.

Email: freddyliu@cmu.edu


News


Publications

Motion Capture with Millimeter-Wave Tags

Xin Yang, Freddy Yifei Liu, Yunshuang Li, Yao Gong, Dinesh Jayaraman, Omid Abari and Mingmin Zhao

To appear in ACM SenSys 2026

Enabling Visual Recognition at Radio Frequency

Haowen Lai, Gaoxiang Luo, Yifei Liu, and Mingmin Zhao

ACM MobiCom 2024


Demos and Posters

Demo: Enabling Visual Recognition at Radio Frequency

Haowen Lai, Yifei Liu, Gaoxiang Luo, and Mingmin Zhao

ACM MobiCom 2024

🌟 Best Demo Award


Experiences

Jan 2023 - May 2025: Research Assistant, University of Pennslyvania
May 2024 - Aug 2024: Research Intern, Microsoft Research
Aug 2022 - May 2024: Teaching Assistant, University of Pennslyvania