摘要
认知无线电技术(CR——cognitiveradio)是软件无线电技术的演化,是一种新的智能无线通信技术。它可以感知到无线电传输的环境特征,通过无线电知识描述语言与通信网络进行智能交流,来调整其传输参数,使系统的无线规则满足用户通信最佳性能的需求。文章对认知无线电技术进行了较详细介绍,包括其概念、通信特点、工作过程和部分关键技术等,最后指出了未来认知无线电技术的若干重要发展方向。
As an evolution of software-defined radio, co mfitive radio （CR） is an intelligent wireless communication. It could be aware of its surrounding environment and intelligently communicate with the network through a radio knowledge representation language （RKRL）, With that, the CR system makes corresponding changes in certzin operating parameters and adapts its radio etiquette to better satisfy the user＇s needs. This article makes an overview of the CR system, including its concept, communications characteristics, tasks process and some key technologies. Finally, it points out some issues that need to be tackled in the future development of cognitive radio.
出处
《电信快报》
2005年第11期18-20,25,共4页
Telecommunications Information
