Analysis of secondary throughput and optimization in cooperative spectrum sensing  

作　　者：LI Mei-ling YUAN Chao-wei LI Lin YANG Rui-zhe 

机构地区：[1]School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China [2]School of Electronics and Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China [3]College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100022, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2011年第4期39-44,共6页中国邮电高校学报（英文版）

基　　金：supported by The National Natural Science Foundation of China (60872149,60672132)

摘　　要：In cooperative spectrum sensing, more secondary user makes more opportunity for detecting the vacant spectrums, which resulting the spectrum utilization improved, however much bandwidth would be occupied for sending the local observation results, inducing the reduced secondary throughput. In this paper, an adaptive algorithm for selecting detection threshold was proposed, where the maximized secondary throughput can always be achieved while assuring sufficient protection to primary user, regardless of the number of sensing users in cognitive radio networks. Theoretical analysis and simulation results validate the proposed scheme.In cooperative spectrum sensing, more secondary user makes more opportunity for detecting the vacant spectrums, which resulting the spectrum utilization improved, however much bandwidth would be occupied for sending the local observation results, inducing the reduced secondary throughput. In this paper, an adaptive algorithm for selecting detection threshold was proposed, where the maximized secondary throughput can always be achieved while assuring sufficient protection to primary user, regardless of the number of sensing users in cognitive radio networks. Theoretical analysis and simulation results validate the proposed scheme.

关 键 词：cooperative spectrum sensing secondary throughput spectrum utilization primary user secondary user detection threshold 

分 类 号：TN911.6[电子电信—通信与信息系统] TN914.42[电子电信—信息与通信工程]