Optimal fusion rule for cooperative spectrum sensing in cognitive radio networks  

作　　者：WANG Qian YUE Dian-wu YAN Qiu-na 

机构地区：[1]College of Information Science and Technology, Dalian Maritime University, Dalian 116026, China [2]National Mobile Communications Research Laboratory of Southeast University, Nanjing 210096, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2012年第5期58-65,共8页中国邮电高校学报（英文版）

基　　金：supported by the Research Fund for the Doctoral Program of Higher Education(20092125110006);the Open Research Fund of National Mobile Communications Research Laboratory, Southeast University(2011D01);the Guangdong Provincial Natural Science Foundation of China(10451802904006030);the Fundamental Research Funds for the Central Universities of China

摘　　要：In this paper, we analyze performance of cooperative spectrum sensing under counting rules when exponential model is utilized to characterize the burst nature of primary user （PU） link. Our objective is to minimize the average error probability （AEP） so that the link utilization in the considered link achieves its maximum. We derive a closed-form expression of AEP as well as the probability of interference （PoI） by classifying cognitive transmission into six events. Then, we consider the minimization of AEP over counting rules under the constraint of interference. As the solution, we develop an efficient algorithm to evaluate the optimal fusion rule. Finally, we verify our analysis in numerical results.In this paper, we analyze performance of cooperative spectrum sensing under counting rules when exponential model is utilized to characterize the burst nature of primary user （PU） link. Our objective is to minimize the average error probability （AEP） so that the link utilization in the considered link achieves its maximum. We derive a closed-form expression of AEP as well as the probability of interference （PoI） by classifying cognitive transmission into six events. Then, we consider the minimization of AEP over counting rules under the constraint of interference. As the solution, we develop an efficient algorithm to evaluate the optimal fusion rule. Finally, we verify our analysis in numerical results.

关 键 词：cooperative spectrum sensing cognitive radio network average error probability countering rule probability of interference spectrum usage 

分 类 号：TN929.5[电子电信—通信与信息系统] TP751[电子电信—信息与通信工程]