认知无线网络中小型移动主用户的感知与定位研究

摘要

This paper mainly studies the perception and location of small-scale mobile primary users in cognitive radio networks. Firstly, the concept and the research status of cognitive radio are briefly introduced, and the characteristics of large-scale and small-scale primary users are compared and summarized. Secondly, the difficulties to sense the small-scale primary users are described. The perception and location technologies for the small-scale primary users are classified. And the advantages and disadvantages of different location methods using different spectrum perception technologies are discussed. Finally, the key research directions for sensing small-scale mobile primary users in cognitive radio networks are given.%主要对认知无线网络中小型移动主用户的感知与定位技术进行了研究。首先简要介绍认知无线电的概念和研究现状，并对大型主用户和小型主用户的特征进行了对比、归纳及总结；然后描述了小型移动主用户难以感知的特点，并对小型主用户感知与定位的技术进行分类，重点分析和探讨了有关运用不同频谱感知技术来实现定位方法的优缺点；最后给出了认知无线网络中感知小型移动主用户的重点研究方向的建议。