This book constitutes the proceedings of the 20th EAI International Conference on Communications and Networking in China, ChinaCom 2025, held in Xi'an, China, during November 8-9, 2025.
The 42 full papers included in this book were carefully reviewed and selected from 106 submissions. They are organized into the following topical sections: Wireless Signal Processing, Modulation, and Receiver Design; Security, Privacy, and Trust; Air-Ground Networking and Low-Altitude Intelligent Systems; Edge Computing; Sensing and Localization; and Internet of Things.