认知传感器网络中快速频谱机会发现的研究

Research on Fast Discovery of Spectrum Opportunities in CRSN

随着认知无线电技术越来越引起人们重视,在传感器网络的应用--认知传感器网络中频谱机会的发现速度和能量有限的矛盾越来越突出。本文通过合理设计频谱感知间隔优化这两个目标。在多信道条件下,理论推导了单频谱机会发现情况和多频谱机会发现情况的平均机会发现时间及能耗关于感知间隔的函数,并通过仿真分析说明了感知间隔选择问题和信道数目对感知速度的影响问题,为网络实用提供了理论基础。

As the development of the cognitive radio technology attracts more and more people＇s attention,the conflict between the discovery velocity of spectrum opportunities and the energy finitude in the cognitive radio sensor networks（CRSN） is more and more serious.In this paper,we explore the method of reasonable plans of sensing interval to solve the issue.We deduce the function of the discovery delay and the energy consume as the increase of the sensing interval in multi-channel condition.And also we explain the selection problems of the interval and the channel number through the simulation,which will be a great contribution to the realization of the CRSN.