摘要
频谱资源的有效利用成为无线通信的一个重要问题和制约无线通信发展的新瓶颈。认知无线电(Cognitive Radio,CR)技术进一步扩展了软件无线电(SDR)的功能,成为解决频谱资源匮乏问题的有效方法。基于认知无线电在无线通信中的重要作用,介绍了认知无线电的概念,总结了认知无线电的基本特征,分析了传统无线电、软件无线电和认知无线电三者之间的关系,概述了认知无线电在民用和军用领域的应用情况,讨论了认知无线电涉及的关键技术,指出了开展认知无线电技术研究的重要意义。
The effective usage of spectrum is an important problem and also the bottleneck in wireless communications. Cognitive radio （CR） technology further expands the functions of software defined radio （SDR） and has become an effective method to cope with insufficient spectrum resource. In view of its important role of CR in wireless communications,the concept of CR is introduced,the characters are summarized,the relations between traditional radio,SDR and CR arc analyzed, the civil and military applications of CR are listed,related key technologies are discussed,and finally the significance for studying CR technology is pointed out.
出处
《电讯技术》
北大核心
2009年第6期93-101,共9页
Telecommunication Engineering
关键词
认知无线电
软件无线电
性能评估
民用
军事应用
关键技术
cognitive radio（CR）
software defined radio（SDR）
performance evaluation
civil application
military application
key technology
