认知无线电研究与最新进展  

New Progress in Research of Cognitive Radio

作　　者：张文金[1] 祁传琦[1] 刘培勇[1] 刘巧燕[1] 

机构地区：[1]成都航空职业技术学院,四川成都610021

出　　处：《通信技术》2010年第5期38-40,43,共4页Communications Technology

摘　　要：随着信息技术的发展,无线通信得到广泛的应用,但同时人们面对频谱资源越来越匮乏的挑战。对授权用户而言,其频谱利用率极低,而对非授权用户而言,却找不到可以使用的频谱,这是导致频谱匮乏的重要原因之一。认知无线电作为无线通信的热点研究领域,它为提高频谱利用效率、解决频谱匮乏问题提供了技术支持,使研究人员看到了希望。文中分析认知无线电研究现状,讨论认知无线电研究的主要技术难题和最新进展,并提出新的发展方向。With the development of information technology,wireless communication has been extensively applied,thus causing a shortage of spectral resource.For granted users,their spectrum is not used effectively,while for ungranted users,they could not find the available spectrum.This is one of the principal causes for shortage of spectral resource.Cognitive radio,as the focus in wireless communication research,provides a technology for making full use of spectral resource and overcoming the problem of spectral shortage.This paper analyzes the current situation of cognitive radio reseach,discusses the main challenge and the new progress,including the future development of cognitive radio.

关 键 词：认知无线电 动态频谱接入 频谱检测 频谱感知 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]