基于多属性决策理论的低轨卫星上行链路频谱切换策略  

LEO Satellite Uplink Spectrum Handoff Strategy Based on Multiple Attribute Decision Making

作　　者：周峰[1,2] 谢卓辰[1,2] 马陆[1] 韦邦合 龚文斌[1] 

机构地区：[1]上海微小卫星工程中心,上海201203 [2]中国科学院上海微系统与信息技术研究所,上海200050

出　　处：《遥测遥控》2013年第2期18-23,共6页Journal of Telemetry,Tracking and Command

基　　金：中科院创新基金项目(No.CXJJ-11-S107);上海市自然科学基金(No.11ZR1435000)

摘　　要：在认知无线电技术应用中,制定频谱切换策略的关键是目标信道的选择,它对系统性能有着至关重要的影响。将多属性判决理论应用于低轨卫星上行链路频谱切换策略中,针对不同的业务类型,提出一种基于多属性分析的策略,即卫星可以根据当前的业务类型选择频谱列表中最适合的信道进行切换。仿真结果表明,切换策略能够使不同的卫星业务都选择到性能最优的信道。It is crucial to select a channel in the spectrum handoff of cognitive radio.In this paper,the multiple attribute decision making is applied in the spectrum handoff for the LEO satellite uplink and a spectrum handoff strategy based on the multiple attribute decision making is proposed.When the spectrum handoff is triggered,the satellite could select the best channel to switch according to the current communication service.The simulation results show that every communication service can choose its best channel based on this strategy.

关 键 词：认知无线电 低轨卫星 频谱切换 多属性 

分 类 号：TN927+.2[电子电信—通信与信息系统]