Hamed Alizadeh - Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Abbas Ali Sharifi - Department of Electrical Engineering, University of Bonab, Bonab, Iran
Mir Javad Musevi Niya - Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran
Hadi Seyedarabi - Faculty of Electrical and Computer Engineering, University of Tabriz, Tabriz, Iran

Cooperative Spectrum Sensing (CSS) is an effective approach to overcome the impact of multi-path fading and shadowing issues. The reliability of CSS can be severely degraded under Byzantine attack, which may be caused by either malfunctioning sensing terminals or malicious nodes. Almost, the previous studies have not analyzed and considered the attack in their models. The present study introduces a new issue named attack-aware CSS where the objective is to analyze the occurred attack against CR ad hoc network to ameliorate the performance of data fusion schemes. The novelty includes the modification of Weighted Sequential Probability Ratio Test (WSPRT) algorithm which resulted in Attack-Aware WSPRT (A2WSPRT). The findings indicated considerable reduction in cooperation overhead and enhancement in correct sensing ratio, especially in severe attacks.

Attack-aware, Byzantine attack, Cognitive Radio (CR), Cooperative Spectrum Sensing (CSS), SSDF Attack