东南大学学报（自然科学版）Issue(5)：891-896,6.DOI:10.3969/j.issn.1001-0505.2014.05.003
一种卫星认知无线网络高效频谱感知与分配策略
High effective spectrum sensing and allocating strategy for satellite cognitive radio networks
摘要
Abstract
To solve the problem that the efficiency of spectrum sensing and utilization are low when the traditional spectrum sensing technology is used in satellite network directly,a novel spectrum sensing and allocating strategy suitable for cognitive satellite network is proposed.In this strategy, by taking advantage of satellite's wide coverage range and considering the satellite as the center node of spectrum sensing,the multi-spectrum simultaneous detecting is realized and the shortages of one by one spectrum sending mechanism of the traditional spectrum sending algorithm is overcome. Then,the validity and availability of the spectrum are defined to measure the characters of idle spec-trum,which are used by satellite node and cognitive users to select the optimized available spectrum. The theoretical analysis and simulation results show that by using the proposed strategy,the efficien-cy of spectrum sensing can be improved,and the probability of spectrum collision between cognitive users and authorized users can be reduced.关键词
卫星认知无线电/频谱感知/频谱分配/有效性/可用度Key words
satellite cognitive radio/spectrum sensing/spectrum allocating/validity degree/availa-bility degree分类
信息技术与安全科学引用本文复制引用
肖楠,梁俊,张衡阳,尹译,王伟..一种卫星认知无线网络高效频谱感知与分配策略[J].东南大学学报（自然科学版）,2014,(5):891-896,6.基金项目
国家自然科学基金资助项目（61202490）、陕西省自然科学基金资助项目（2012JM8004）． （）
