摘要
Abstract
The cognitive radio system can effectively utilize the idle spectrum by detecting the surrounding spectrum environment. The spectrum detection,as one of the key technologies in cognitive radio system,can search spectrum holes and provide assistance for higher level decision.In this paper,the spectrum detection algorithms in cognitive radio system such as multi-taper method and weighted overlapped segment averaging method are introduced.The performance simulations of multi-taper method are carried out,and the impact of important parameters on estimation capability in this method is analyzed. Finally the hardware implementation of spectrum detection algorithms is verified,and the results show that the performance of algorithms is ideal.关键词
认知无线电/频谱检测/频谱空洞/多窗谱估计Key words
cognitive radio/spectrum detection/spectrum holes/multi-taper method分类
信息技术与安全科学
