A NOVEL COOPERATIVE SPECTRUM SENSING METHOD BASED ON COOPERATIVE GAME THEORY  

作　　者：Cao Kaitian Yang Zhen 

机构地区：[1]Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

出　　处：《Journal of Electronics(China)》2010年第2期183-189,共7页电子科学学刊（英文版）

基　　金：Supported by the National High Technology Research and Development Program of China (863 Program,No.2009AA01-Z241);the National Natural Science Foundation of China (No.60772062)

摘　　要：A novel cooperative sensing method is proposed in this paper. The proposed scheme adopts sensing creditability degree to characterize the impact of the distance and the channel parameters on the sensing result,and considers that each user has different average SNR and different decision threshold,by using General Nash Bargaining Solution (GNBS) strategy in Cooperative Game Theory (CGT),the detection performance for two-user case are derived. For multi-user case,the sensing performance is obtained with Hungarian method. Compared with the traditional schemes such as Nash Bargaining Solution (NBS) and AND,the proposed scheme covers all the factors mentioned above,and enhances the sensing rationality and reliability. Simulation results show that the proposed scheme can further improve the sensing performance and creditability.A novel cooperative sensing method is proposed in this paper. The proposed scheme adopts sensing creditability degree to characterize the impact of the distance and the channel parameters on the sensing result, and considers that each user has different average SNR and different decision threshold, by using General Nash Bargaining Solution （GNBS） strategy in Cooperative Game Theory （CGT）, the detection performance for two-user case are derived. For multi-user case, the sensing performance is obtained with Hungarian method. Compared with the traditional schemes such as Nash Bargaining Solution （NBS） and AND, the proposed scheme covers all the factors mentioned above, and enhances the sensing rationality and reliability. Simulation results show that the proposed scheme can further improve the sensing performance and creditability.

关 键 词：Cognitive Radio （CR） Cooperative Sensing creditability degree Hungarian method spectrum sensing Cooperative Game Theory （CGT） 

分 类 号：TN92[电子电信—通信与信息系统]