Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (11): 3663-3670.doi: 10.12305/j.issn.1001-506X.2023.11.35

• Communications and Networks • Previous Articles     Next Articles

Cooperative spectrum sensing method against SSDF attacks based on composite entropy and evidence theory

Shenhao YUAN1, Zengmao CHEN1,2,*, Ming DIAO1, Zhiguo SUN1, Rongchen SUN1   

  1. 1. School of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
    2. Key Laboratory of Advanced Marine Communication and Information Technology, Ministry of Industry and Information Technology, Harbin 150001, China
  • Received:2022-07-14 Online:2023-10-25 Published:2023-10-31
  • Contact: Zengmao CHEN

Abstract:

Aiming at the problem of sensing performance deterioration caused by spectrum sensing data falsification (SSDF) attacks in cooperative spectrum sensing, when the proportion of malicious users in secondary users is less than half, an anti-SSDF attacks cooperative spectrum sensing method based on composite entropy and evidence theory is proposed. Firstly, secondary users compute basic probability assignment (BPA) information based on local perception statistics. Secondly, the fusion center calculates the distance value according to the BPA and performs entropy processing to obtain the composite entropy, and then uses the composite entropy as the weight to adjust the BPA information to reduce the weight of malicious users. Finally, in view of the disadvantages of Dempster's fusion formula in evidence theory, the weighted summation method is used to replace the traditional fusion formula. The simulation results show that, compared with the other existing methods, the proposed method has better sensing performance under different types of SSDF attacks.

Key words: cooperative spectrum sensing, spectrum sensing data falsification (SSDF), composite entropy, evidence theory

CLC Number: 

[an error occurred while processing this directive]