Joint optimization algorithm of sensing thresholds and cooperative users in cooperative detection  

作　　者：任晶秋 张光华 刘鑫 

机构地区：[1]School of Electric Information Engineering,Northeast Petroleum University [2]Communication Research Center,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2012年第5期31-35,共5页哈尔滨工业大学学报（英文版）

摘　　要：Cooperative detection is an effective method to improve the spectrum sensing of Cognitive Radio (CR), and its detection performance can be improved through optimization. An optimization algorithm for cooperative detection based on "OR Rule" which can optimize the detection threshold of each user and the number of cooperative users simultaneously is proposed in this paper. The algorithm, which is based on minimizing the error detection probability, adopts partial fusion to improve the detection performance effectively. The simulation results show that the error detection probability of the proposed algorithm is lower than that of the cooperative detection algorithm with the settled threshold, and the better performance can be achieved through choosing fewer users.Cooperative detection is an effective method to improve the spectrum sensing of Cognitive Radio （CR）, and its detection performance can be improved through optimization. An optimization algorithm for cooperative detection based on ＂OR Rule＂ which can optimize the detection threshold of each user and the number of cooperative users simultaneously is proposed in this paper. The algorithm, which is based on minimizing the error detection probability, adopts partial fusion to improve the detection performance effectively. The simulation results show that the error detection probability of the proposed algorithm is lower than that of the cooperative detection algorithm with the settled threshold, and the better performance can be achieved through choosing fewer users.

关 键 词：cognitive radio cooperative detection energy detection error detection probability 

分 类 号：TN911.23[电子电信—通信与信息系统]