摘要
在珠三角地区对超高频(Ultra High Frequency,UHF)频段开展了近两个月的监测,给认知无线电技术在广东省的应用提供了现实依据.结果表明:频段利用率普遍较低,同一频段在不同地区、不同时段的利用情况存在一定的差异.对广播电视频道占用情况的建模体现了频道开放时间的规律性;根据各频率点的利用率情况将频率划分为五个占用程度,可得出可供认知无线电用户接入的连续空闲带宽的概率分布.
To provide a realistic basis for the application of cognitive radio in Guangdong province, two-month spectrum measurement of UHF band was carried out in the Peal River Delta area. The results show that current spectrum utilization is commonly low, and they differ according to areas and time for the same band. The broadcast and TV channel occupancy models reflect the regularity of their o- pening time. Meanwhile, through dividing frequencies into five different levels based on their duty cycles, the availability of successive vacant bandwidth for cog- nitive radio users to access can be analyzed.
出处
《电波科学学报》
EI
CSCD
北大核心
2013年第3期485-490,共6页
Chinese Journal of Radio Science
基金
NSFC-广东省联合基金重点项目(U1035002)
粤港关键领域重点突破招标项目(2011A011305001
2011A011302001)
广东高校产学研基地及科技成果转化重大项目(CGZHZD1102)
关键词
认知无线电
频谱监测
占用度
空闲带宽
广播电视频道
cognitive radio
spectrum measurement
occupancy
vacant band-width
broadcast and TV channel
