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出 处:《电视技术》2014年第17期47-53,71,共8页Video Engineering
摘 要:随着频谱资源的日益紧张,白频谱的开发利用受到越来越多关注,世界各国都在努力推进白频谱的发展。简述了广电白频谱的概念及重要性,介绍了白频谱接入所依赖的认知无线电技术,并回顾了近年国际最新的白频谱管理和部署进展,最后对比了两份白频谱标准IEEE802.11af与IEEE802.22在PHY层和MAC层的差异。Along with the frequency spectrum resource becomes more and more tight, the development and utilization of the white space is getting increasing attention. All countries in the world make efforts to promote the development of white space. The concept and importance of radio & TV white space is sketched in this paper, cognitive radio technology is introduced which is white space access relied on, and the recent progress in the international latest white space management and deployment is reviewed, finally the differences between two white space standrads IEEE 802.11af and IEEE802.22 is compared in PHY and MAC layers.
关 键 词:白频谱 认知无线电 概览 IEEE802 1laf IEEE802 22
分 类 号:TN929.5[电子电信—通信与信息系统]
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