认知无线网络及其频谱管理技术

Cognitive Radio Networks and its Spectrum Management Technologies

摘要:

认知无线网络通过不同种类的无线网络体系结构之间的并存和动态频谱接入技术可以为移动用户提供高带宽的服务。高效的频谱管理技术是这一新型网络面临的主要挑战之一。为了更好的理解认知无线网络,文章简单回顾了认知无线电技术,对认知无线网络的结构及特点进行了深入研究,明确了认知无线网络频谱管理的主要任务,并结合认知无线电当前的发展状况对认知无线网络频谱管理技术进行了总结分析。

Abstract:

Cognitive radio networks will provide high bandwidth to mobile users via heterogeneous wireless architectures and dynamic spectrum access techniques. Spectrum management functions can address challenges for the realization of this new network paradigm. To provide a better understanding of CR networks, it presented recent developments and open research issues in spectrum management in CR networks. First, a brief overview of cognitive radio and the CR network architecture was provided. Then four main challenges of spectrum management, such as spectrum sensing, spectrum decision, spectrum sharing, and spectrum mobility, were discussed.