A single iteration belief propagation algorithm to minimize the effects of primary user emulation attacks

Sasa Maric, Sam Reisenfeld, Leonardo Goratti

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

9 Citations (Scopus)

Abstract

This paper presents a method to alleviate the effects of primary user emulation attacks in cognitive radio (CR) networks. The proposed method uses a simplified belief propagation (BP) algorithm that is able to identify whether a transmitter is a legitimate primary user or an attacker. In a primary user emulation attack (PUEA) a transmitter impersonates a primary user (PU) in order to deceive secondary users (SU) into believing that a channel is occupied. As a result, secondary users must vacate the channel immediately. This paper presents a simplified belief propagation method as a defence strategy against primary user emulation attacks. In our method each secondary user examines an incoming signal from a transmitter and determines with a certain probability whether the transmitter is a legitimate user or not. This probability is known as the belief. The beliefs at each secondary user are reconciled and a final belief is compared to a predefined threshold. If the final belief is below the threshold, the user is identified as an attacker. If it is above the threshold, the user is deemed a primary user. This result is then propagated throughout the network so that all users on the network are aware of the attacker. In this paper, we present a method based on the belief propagation framework. The proposed method converges in a single iteration; this is the result of a redefined messaging protocol and a simplified belief equation. As a result, the computational complexity of the method is reduced significantly, while still maintaining a high level of accuracy.

Original languageEnglish
Title of host publication2016 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2016
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-6
Number of pages6
ISBN (Electronic)9781509006298
DOIs
Publication statusPublished - 18 Jan 2017
Event2016 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2016 - Phuket, Thailand
Duration: 24 Oct 201627 Oct 2016

Other

Other2016 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2016
CountryThailand
CityPhuket
Period24/10/1627/10/16

Keywords

  • belief propagation
  • Cognitive radio
  • cognitive radio security
  • jammer attacks
  • PUEA

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