Joint Decoding of Primary and Secondary Users in Cognitive Radio Systems with Opportunistic Interference Cancellation

2012 ◽  
Author(s):  
Zhaorong Zhou ◽  
Hong Long ◽  
Yu Wang ◽  
Tao Jiang ◽  
Sanshan Sun
Keyword(s):  
Cognitive Radio ◽  
Interference Cancellation ◽  
Secondary Users ◽  
Joint Decoding ◽  
Cognitive Radio Systems ◽  
Radio Systems ◽  
Primary And Secondary Users

scholarly journals Game Theory-Based Analysis on Interactions Among Secondary and Malicious Users in Coordinated Jamming Attack in Cognitive Radio Systems

2016 ◽  
Vol 25 (08) ◽  
pp. 1650097 ◽  
Author(s):  
Ehsan Meamari ◽  
Khadijeh Afhamisisi ◽  
Hadi Shahriar Shahhoseini
Keyword(s):  
Cognitive Radio ◽  
Theoretical Method ◽  
Optimal Switching ◽  
Jamming Attacks ◽  
Secondary Users ◽  
Simple Strategy ◽  
Jamming Attack ◽  
Cognitive Radio Systems ◽  
Spectrum Band ◽  
Radio Systems

IEEE 802.22 Standard utilizes cognitive radio (CR) techniques to allow sharing unused spectrum band. CR is vulnerable to various attacks such as jamming attacks. This paper has focused on coordinated jamming attacks. A simple strategy for secondary users is to change their bands and switch to other appropriate bands when the jamming attack has occurred. Also, the malicious users should switch to other bands in order to jam the secondary users. To address this problem, a game theoretical method is proposed to analyze coordinated jamming attacks in CR. Then, using Nash equilibrium on the proposed game, the most appropriate bands have been found to switch as well as the optimal switching probabilities for both secondary and malicious users. Meanwhile, effects of different parameters like the number of malicious users are investigated in changing the optimal switching probabilities by analysis of the model.

Network selection for secondary users in cognitive radio systems

2011 ◽  
Author(s):  
Chonggang Wang ◽  
Kazem Sohraby ◽  
Rittwik Jana ◽  
Lusheng Ji ◽  
Mahmoud Daneshmand
Keyword(s):  
Cognitive Radio ◽  
Network Selection ◽  
Secondary Users ◽  
Cognitive Radio Systems ◽  
Radio Systems ◽  
Selection For
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