NPS: Non-periodic Sensing for Opportunistic Spectrum Access

摘要：

One of the most challenging issues in cognitive radio networks is when and how often to sense the availability of licensed spectrum. Adopting the.xed sensing period to detect signals, the conventional periodic spectrum sensing method is inef.cient or even not able to satisfy the various demands of secondary users. In this paper, we propose a non-periodic sensing (NPS) mechanism, which reduces the sensing overhead based on the users?data rate requirement and the spectrum availability statistics. Based on the theoretic framework of NPS, we propose three speci.c NPS methods朌emand-oriented method, Maxoriented method and Mix method杢o schedule the spectrum sensing adaptively. The simulation results shows the improvement on the sensing ef.ciency compared with the periodic sensing approach.

作者: Ning Zhang Wei Wang Zhaoyang Zhang

作者单位: Department of Information Science and Electronic Engineering,Key Laboratory of Integrate Information Key Laboratory of Information Coding and Transmission,Southwest Jiaotong University, Chengdu 610031,

会议类型: 国际会议

会议名称: 2010年无线通信与信号处理国际会议

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2010-10-20（万方平台首次上网日期，不代表论文的发表时间）