认知无线电频谱感知技术综述  

Review of Spectrum Sensing Techniques in Cognitive Radio Networks

作　　者：张莹[1] 滕伟[2] 韩维佳[2] 张琰[2] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]西安电子科技大学,陕西西安710071

出　　处：《无线电通信技术》2015年第3期12-16,共5页Radio Communications Technology

摘　　要：针对频谱资源匮乏这一问题,认知无线电技术在提高频谱利用率方面应用前景广泛,而频谱感知作为认知无线电技术实现的前提条件,是目前无线电领域的一个研究热点。近年来人们提出了很多种频谱感知的方法,综述了频谱感知技术的研究进展,对几种典型的传统频谱感知模型进行对比介绍,讨论了几种新型的感知技术,并对各种技术的性能进行深入分析,最后指出了频谱感知研究的挑战及发展趋势。In order to deal with the problem of spectrum resource scarcity, the existing cognitive radio technology, which can improve the utilization of spectrum resources, has a broad application prospect. As the precondition of cognitive radio technology, the spectrum sensing has become a hotspot for the researchers.In recent years,a large number of methods or algorithms related to spectrum sensing have been proposed.This paper summarizes the research progress of spectrum sensing, some typical spectrum sensing models are described, some novel algorithms in this area are discussed, and the performance of the various techniques are analyzed. Finally, the research challenge and the development trend of spectrum sensing technology are pointed out.

关 键 词：认知无线电 单用户频谱感知技术 多用户频谱感知技术 新型频谱感知技术 检测性能 

分 类 号：TN92[电子电信—通信与信息系统]