计算机应用研究2012，Vol.29Issue(6)：2297-2300,4.DOI:10.3969/j.issn.1001-3695.2012.06.079
认知无线网络中动态频谱接入性能分析
Performance analysis of dynamic spectrum access in cognitive radio networks
摘要
Abstract
Cognitive radio technology use spectrum hole to communicate can effectively solve the spectrum shortage problem, dynamic spectrum access is its core technology. When primary users' spectral efficiency is high in the network, second user can not complete the commuication under the QoS requirements, second users should not access the network. Finite spectrum hole resources can only meet the demand of finite second users, in order to ensure communication quality, network can only access the appropriate amount of second users under a fixed primary users' efficiency. This paper modeled the process of dynamic spectrum access in cognitive radio networks with a mandatory priority queuing theory, analysed second users' handoff proha-baih'ty and blocking probability, the condition of second users access network and how many seond users could be accessed under a fixed primary users' efficiency could be obtained from the simulation results.关键词
认知无线电/动态频谱接入/强制优先排队论Key words
cognitive radio/dynamic spectrum access/mandatory priority queuing theory分类
信息技术与安全科学引用本文复制引用
鲜永菊,杨春龙,徐昌彪,郑湘渝..认知无线网络中动态频谱接入性能分析[J].计算机应用研究,2012,29(6):2297-2300,4.基金项目
国家自然科学基金资助项目(60972068) （60972068）
重庆市教委科学技术研究项目(KJ100517,KJ0901502) （KJ100517,KJ0901502）
