西安电子科技大学学报（自然科学版）2011，Vol.38Issue(5)：46-51,6.DOI:10.3969/j.issn.1001-2400.2011.05.008
认知网络中控制信道受限的协作频谱感知
Cooperative spectrum sensing over the constrained control channel in cognitive radio networks
摘要
Abstract
This paper presents a multiband joint cooperative spectrum sensing scheme. For the local detection of each frequency band, two thresholds can be calculated according to noise uncertainty and a secondary user can decide whether there are primary users who utilize multiband joint detection. For the uncertain frequency band with its test statistic falling into the two local detection thresholds, the multi-point cooperative spectrum sensing is performed. In this scheme, secondary users transfer the sensing information by utilizing the idle frequency bands, rather than only depending on the common control channel. Analytical and simulation results show that the new scheme can decrease the communication overhead of the common control channel and obtain a smaller miss alarm probability for the uncertain spectrum bands compared to traditional cooperative sensing schemes.关键词
认知无线电/协作频谱感知/通信负载Key words
cognitive radio/ cooperative spectrum sensing/ communication overhead分类
信息技术与安全科学引用本文复制引用
宋朝霞,周正,孙璇..认知网络中控制信道受限的协作频谱感知[J].西安电子科技大学学报（自然科学版）,2011,38(5):46-51,6.基金项目
国家科技重大专项基金资助项目(2009ZX03006-009) （2009ZX03006-009）
韩国知识经济部仁荷大学ITRC基金资助项目(NIPA-2011-C1090-1111-0007) （NIPA-2011-C1090-1111-0007）
