Telecommunications Science ›› 2023, Vol. 39 ›› Issue (11): 69-79.doi: 10.11959/j.issn.1000-0801.2023240

• Research and Development • Previous Articles    

Multi-user physical layer authentication mechanism based on lightweight CNN and channel feature assistance

Yankun WANG, Dengke GUO, Dongtang MA, Jun XIONG, Xiaoying ZHANG   

  1. College of Electronic Science and Technology, National University of Defense Technology, Changsha 410073, China
  • Revised:2023-11-10 Online:2023-11-01 Published:2023-11-01
  • Supported by:
    The National Natural Science Foundation of China(61372099);The National Natural Science Foundation of China(61931020)

Abstract:

To address the problems of poor robustness and high complexity of current physical layer user authentication algorithms, a lightweight convolutional neural network (CNN) channel feature extraction algorithm was proposed to reduce the channel state response required for training by changing the form of network input, and a multi-user physical layer channel feature-assisted authentication mechanism was established based on this algorithm to design a detailed process from user registration to authentication, and multi-user authentication and network parameter update online were completed.Simulation results show that the proposed algorithm can complete multi-user authentication, obtain good detection performance with smaller training rounds, and require fewer training samples than existing multi-user authentication algorithms.

Key words: physical layer security, multi-user authentication, lightweight, CIR, robustness

CLC Number: 

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