摘要
认知无线电(Cognitive radio,CR)技术是一种智能的频谱共享技术。文章在简述认知无线电的基本内容和关键技术的基础上,重点探讨了认知无线电技术对于现有无线电带来的难题。再针对这些新的难题,并基于现有的无线电监测系统,提出了一种适应于认知无线电环境的无线电监测系统雏形,并给出了新系统模型下的测向子系统的仿真结果。
Cognitive radio technology is an intelligent spectrum sharing technology.In the present paper,the problems caused by cognitive radio of the existing radio technology were discussed based on the outlining the basic content and key technology of cognitive radio.According to this problems,a new radio monitoring system adapted to the cognitive radio environment was proposed and the simulation results of direction finding algorithms was also given for the new monitoring system.
