【摘要】 为了提高无线传感器网络中节点在多个频点工作环境下的搜索效率,提出了一种基于认知无线电技术的节点搜索算法。在分析了影响节点成功搜索的各个因素并映射这些因素到算法中相应参数的基础上,通过多种方法建立了各参数之间的联系并得出了在一定使用情况下的最优配置。算法既汲取了认知无线电中对频点利用率高、抗干扰能力强和安全性好等优点,还克服了其相对于定频通信在节点搜索能力方面的不足。更多还原

【Abstract】 Based on cognitive radio(CR) technology,a kind of neighbour discovery algorithm for elevating the searching efficiency of nodes of wireless sensor network in the operation condition with multi-frequencies is presented.The factors which effect successful searching between nodes are analysed and are mapped to the related parameters in this algorithm,based on this,we established the relationship among parameters through several ways and educed optimum configuration under definite usage circumstance at last.This algorithm draws the advantages such as high utilization rate of frequency,strong ability in anti-jamming and high security in CR communication mode,and covers the relative shortage in its neighbour discovering ability compared with the fixed frequency communication on corresponding aspects.更多还原