Theoretical Analysis of Combination and Detection for Short-Term Cooperative Sensing in Cognitive Radio Systems

摘要：

In cognitive radio systems, one of the main requirements is to detect the presence of the primary users transmission. Cooperative sensing is used to improve the detection performance when the number of nodes increasing. In this paper, short-term cooperative sensing based energy detection is considered. The theoretical detection probability of equal gain combination has been analyzed with different SNR on each cooperative node. The combined variable for different SNR based cooperative sensing is proved to follow central and non-central chisquare distribution. Simulation results show that the derived theoretical ROC curve precisely matches the simulated curve.

关键词： Combination Energy Detection Cooperative Sensing CR

作者: Zhang Jingping

作者单位: Mutimedia Virtual Simulation Lab.Shanghai Theatre Academy Shanghai,China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Education Technology and Computer(第二届IEEE教育技术与计算机国际会议 ICETC 2010)

会议地点: 上海

会议语种:英文

页码: 381-384

在线出版日期: 2010-06-22（万方平台首次上网日期，不代表论文的发表时间）