Qijun Wang | PhD Student at Michigan State University

Biography

Qijun Wang is a PhD student in the Intelligent Networking and Sensing Systems Lab at Michigan State University, where he works with Dr. Huacheng Zeng on wireless sensing, RF systems, and AI-assisted sensing.

Research Interests

Qijun's research focuses on building AI-assisted wireless sensing systems that enable passive and battery-free devices to capture rich physical signals beyond traditional communication. His work spans wireless sensing, RF systems, backscatter communication, and artificial intelligence, with applications in voice sensing, localization, tracking, and security.

He has authored multiple first-authored papers in top-tier venues, including IEEE S&P, UbiComp, and IEEE INFOCOM. His recent work, RadKey, IEEE S&P 2026, introduces an LLM-guided RF backscatter system for through-wall keystroke inference, highlighting the potential of wireless systems to sense subtle physical dynamics in challenging environments.

Selected Publications

[IEEE S&P'26] Qijun Wang, Chunqi Qian, Huacheng Zeng. "RadKey: An LLM-Guided RF Backscatter System for Through-Wall Keystroke Inference". Demo 12.7% acceptance rate
[ACM IMWUT/UbiComp'26] Qijun Wang, Peihao Yan, Geo Jie Zhou, Xiang Liu, Dan Stanley, Zach Huang, Chunqi Qian, Huacheng Zeng. "SOPAR: Bee Localization and Tracking Using RF Sub-harmonic Oscillating Parametric Resonator in Hive Environments". Demo
[IEEE INFOCOM'26] Qijun Wang, Peihao Yan, Chunqi Qian, Huacheng Zeng. "RadEar: A Self-Supervised RF Backscatter System for Voice Eavesdropping and Separation". 18.9% acceptance rate
[ACM IMWUT/UbiComp'25] Qijun Wang, Chunqi Qian, Peihao Yan, Shichen Zhang, Huacheng Zeng. "A Batteryless Wireless Microphone Using RF Backscatter". Demo

View full publication list →

Honors and Awards

2025, Honorable Mention Recognition (Top 5%), ACM CHI
2015 -- 2018, China National Scholarship (highest national scholarship), three consecutive years
2017 -- 2018, Tianjin Wang Kechang Scholarship
2015 -- 2018, First-Class Scholarship, CAUC, three consecutive years
2015 -- 2016, Excellent College Student, CAUC
2016 -- 2018, Outstanding College Student Cadre, CAUC, two consecutive years

Teaching Experience

Teaching Assistant: CSE 422 - Computer Networks (MSU)

Professional Services

Technical Program Committee Member
IEEE INFOCOM 2023, 2024, 2025, 2026 - Poster and Demo Session
Journal Review
IEEE Transactions on Wireless Communications