认知无线电通信系统关键技术研究

认知无线电是一种具有良好应用前景的通信技术,可以有效提高系统的资源利用率等性能。文中介绍了认知无线电的概念与系统结构,分析了认知无线电系统当中需要重点解决的关键技术,包括频谱感知,动态频谱管理以及信道估计等,并研究与探讨了关键技术的多种典型解决方案,对其性能进行分析与评价,最后对未来应用需要解决的关键问题与热点技术的结合进行了总结与展望。

Key Technologies of Congnitive Radio-based Communication System

As a promising communication technology,congnitive radio could improve the system efficiency.The concept and system structure of congnitive radio-based communication system is presented,some key technologies are studied,including the spectrum sensing,dynamic spectrum management and channel estimation.Particularly,the typical schemes and their performances are discussed and evaluated.Finally the key problems to be solved and the combination with other technologies are explored.