Electronic Science and Technology ›› 2022, Vol. 35 ›› Issue (4): 1-7.doi: 10.16180/j.cnki.issn1007-7820.2022.04.001

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EMI Margin Assessment of Vehicular Communication System

Jianpeng WAN,Hongmin LU,Guohua LIU,Min LI   

  1. School of Electronic Engineering,Xidian University,Xi'an 710071,China
  • Received:2020-12-11 Online:2022-04-15 Published:2022-04-15
  • Supported by:
    The Defense Advanced Research Projects(JZX7X201901JY0048)


With the development of science and technology, the electromagnetic interference in the vehicular communication system becomes more and more obvious. In view of the interference margin assessment of the vehicular communication system, this study proposes a novel evaluation method of electromagnetic interference margin of the vehicular communication system based on four-level screening method. The working conditions, frequency, signal power and communication performance of the vehicular receiver are evaluated respectively to display the disturbed situation and interference margin of the vehicular receiver quantitatively. Aiming at the influence of interference source on receiver sensitivity, the communication distance, signal-to-noise ratio and bit error rate are selected to evaluate the performance of vehicular communication system by this method. The results show that compared with the traditional four-level screening method, this method can more comprehensively reflect the performance changes of communication system with interference.

Key words: electromagnetic interference, vehicular communication system, interference margin, communication performance, receiver sensitivity, communication distance, SNR, BER

CLC Number: 

  • TN97