计算机技术与发展Issue(1)：171-174,180,5.DOI:10.3969/j.issn.1673-629X.2016.01.037
提高认知多跳网络的协作频谱感知方法
A Method of Cooperative Spectrum Sensing of Enhancement in Cognitive Radio Multi-hop Networks
摘要
Abstract
Spectrum sensing is one of the core technology of Cognitive Radio ( CR). Whether the unlicensed spectrum can be sensed quickly and correctly is not only the premise of the communication,but also one of the standard of sensing detection. Considering the noise of fading channel,a method of multi-cluster cooperative spectrum sensing based on space-time coding in multi-hop cognitive radio networks was proposed. The program is shown in detail as follow. First,divide the cognitive users into different clusters. Secondly,classify the clusters based on distance. Next,the cluster head will adopt Alamouti coding with its upper level cluster. At last,the fusion center will get the coding information of sensing results. This program will help to enhance the detection capability. Multi-cluster can reduce the power and sensing time. The simulation result suggests that suggested scheme can not only reduce the energy dissipation and improve the throughput,but also can improve the detection property in a certain scale. After Alamouti coding,the error rate decreases dramatically.关键词
认知无线电/协作频谱感知/能量检测/空时编码Key words
cognitive radio/cooperative spectrum sensing/energy detection/space-time coding分类
信息技术与安全科学引用本文复制引用
刘敏,岳文静,蒲昱,陆海亚..提高认知多跳网络的协作频谱感知方法[J].计算机技术与发展,2016,(1):171-174,180,5.基金项目
中国博士后科学基金项目(2013M531393) （2013M531393）
国家级大学生创新创业训练计划项目(201410293003) （201410293003）
江苏省博士后科研资助计划项目(1102102C) （1102102C）
江苏省高等学校大学生创新创业训练计划立项项目(201410293003Z) （201410293003Z）
南京邮电大学大学生创新训练计划项目(SZDG2014003) （SZDG2014003）
