Wireless Systems × Artificial Intelligence

Guoxuan Chi | 迟国轩

Assistant Professor · School of Artificial Intelligence
Beijing University of Posts and Telecommunications

I am currently an Assistant Professor in the School of Artificial Intelligence at Beijing University of Posts and Telecommunications (BUPT). Before joining BUPT, I was a postdoctoral researcher at the Institute of Trustworthy Networks and Systems, Tsinghua University, led by Prof. Yunhao Liu. I received my Ph.D. from Tsinghua University in 2024 under the supervision of Prof. Zheng Yang, and my B.E. from BUPT in 2019.

How can generative AI understand the physical world through radio signals?

Wireless Sensing ISAC Embodied Navigation

chiguoxuan@bupt.edu.cn chiguoxuan@gmail.com Scholar ORCID CV
Portrait of Guoxuan Chi
Office
Room 705 · Mingguang Building
Location
BUPT · Beijing, China
News

Recent updates

News archive
  1. Our multimodal Wi-Fi-and-vision depth-estimation work was published in ACM TOSN.
  2. Invited to serve as a TPC member of IEEE PIMRC 2026.
  3. Gave an invited talk at the ACM TURC 2025 SIGCOMM China Forum.
  4. RF-Diffusion received the ACM MobiCom 2024 Best Artifact Award.
Research

RF generation, wireless sensing & spatial intelligence

Research overview
XFall cross-modal Wi-Fi sensing architecture
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RF Sensing

RF & Wireless Sensing

Reliable perception from signals already present in the environment.

XFall · Wi-Drone · milliLoc
Publications

Selected work

All publications
RF-Diffusion time-frequency diffusion framework
ACM MobiCom 2024 Best Artifact Award

RF-Diffusion: Radio Signal Generation via Time-Frequency Diffusion

A time-frequency diffusion framework for generating diverse, high-quality time-series RF signals.

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XFall cross-modal fall detection framework
IEEE JSAC 2024

XFall: Domain Adaptive Wi-Fi-Based Fall Detection With Cross-Modal Supervision

Domain-adaptive Wi-Fi fall detection using environment-independent features and visual supervision.

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Wi-Drone indoor tracking system
ACM MobiSys 2022

Wi-Drone: Wi-Fi-based 6-DoF Tracking for Indoor Drone Flight Control

Standalone Wi-Fi 6-DoF pose tracking designed for reliable indoor drone flight control.

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Locate, Tell, and Guide system overview
IEEE TMC 2023

Locate, Tell, and Guide: Enabling Public Cameras to Navigate the Public

A public-camera-based system that localizes users, attaches semantic context, and provides indoor navigation.

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Multimodal Wi-Fi and vision depth estimation framework
ACM TOSN 2026

Multimodal Diffusion-Based Depth Estimation Framework with Wi-Fi and Vision

A multimodal diffusion framework that combines commodity Wi-Fi CSI and RGB images for robust depth estimation.

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Academic exchange

Invited talks

Academic activities
ACM TURC 2025 · SIGCOMM China Forum

Generative AI-Driven Techniques for Wireless Sensing

An invited presentation on time-frequency diffusion for RF signals and the role of generative models in wireless sensing.

Photos Event
‘顶会作者读顶会’ Series · Chaspark

On the Integration of Generative AI and Wireless Sensing

An invited presentation on generative methods for radio signals and their applications to wireless sensing, signal denoising, and channel estimation.

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Funding

Selected grants

Full record
  • PI Young Scientists Fund (Category C), National Natural Science Foundation of China
  • PI General Program, China Postdoctoral Science Foundation
Recognition

Selected honors

  • 2024 ACM SIGCOMM China Doctoral Dissertation Award
  • 2024 ACM MobiCom Best Artifact Award
  • 2021–2023 First-class Scholarship, Tsinghua University