基于Markov的频谱切换研究  

Research on Spectrum Handoff Based on Markov

作　　者：林法杰[1] 薛伟[1] 张玉兵[1] 

机构地区：[1]江南大学物联网工程学院,无锡214122

出　　处：《计算机与数字工程》2014年第9期1663-1667,共5页Computer & Digital Engineering

摘　　要：为了进一步提高认知无线电网络中认知用户的切换性能,有效降低认知用户切换中的阻塞率和强制中断率,提出了频谱池与预留信道相结合的解决方案,并且借助马尔科夫链和排队理论对认知切换系统关键指标进行分析。仿真结果显示,该方案能够有效保障和提高认知用户的服务质量。In order to further improve the handoff performance of cognitive users in cognitive radio networks, effectively reduce the blocking probability and forced termination probability of cognitive users, the solution that combines spectrum pooling and the channel reservation is proposed. And it is to analyze the key points of cognitive handoff system with the help of Markov chain and queuing theory. The simulation results show that the scheme can effectively protect and improve the cognitive user＇s service quality.

关 键 词：认知无线电 频谱池 预留信道 排队理论 马尔科夫链 阻塞率 强制中断率 

分 类 号：TN911.25[电子电信—通信与信息系统]