首页 | 本学科首页   官方微博 | 高级检索  
     检索      

协同认知网络中功率分配与协同节点选择
引用本文:刘忠军,张冬梅,张祯松,徐友云.协同认知网络中功率分配与协同节点选择[J].上海交通大学学报,2012,46(6):882-886.
作者姓名:刘忠军  张冬梅  张祯松  徐友云
作者单位:(1. 解放军理工大学 通信工程学院, 南京 210007; 2. 中国人民解放军61062部队, 北京 100091)
基金项目:国家重点基础研究发展规划(973)项目(2009CB3020402);国家高技术研究发展计划(863)项目(2009AA01Z249)资助
摘    要:针对认知无线网络中次级用户通信性能优化问题,以最大化次级用户的传输速率为目标,研究引入协同通信的认知网络中协同节点选择和发送功率分配问题.通过引入中断概率增量因子,简化主用户接收机中断容量损失受限的约束条件,同时依据目标函数的不同将问题分解,对形成的原优化问题进行了有效求解.仿真结果表明,文中算法实现了最优的功率分配和协同节点选择,在保护主用户通信业务的前提下,有效地提升了次级用户的传输速率.

关 键 词:认知无线电    协同通信    协同节点选择    功率分配    中断容量损失  
收稿时间:2011-05-21

Power Allocation and Cooperative Node Selection in Cooperative Cognitive Radio Networks
LIU Zhong-jun,ZHANG Dong-mei,ZHANG Zhen-song,XU You-yun.Power Allocation and Cooperative Node Selection in Cooperative Cognitive Radio Networks[J].Journal of Shanghai Jiaotong University,2012,46(6):882-886.
Authors:LIU Zhong-jun  ZHANG Dong-mei  ZHANG Zhen-song  XU You-yun
Institution:(1. Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, China; 2 China’s PLA 61062 Troop, Beijing 100091, China)
Abstract:Focusing on the issue of the performance optimization of the secondary users’ communication in cognitive radio networks, this paper investigated the cooperative node selection and power allocation problem in cooperative cognitive radio networks in order to maximize the transmission rate of the secondary users. By introducing an outage probability increment coefficient which makes the constraint simplified, the original optimization problem was effectively handled by the decomposition method according to the objective functions. The simulation results indicate that the optimal power allocation and cooperative node selection can be obtained, which improves the secondary users’ transmission rate performance while the primary users’ service is protected.
Keywords:cognitive radio  cooperative communication  cooperative node selection  power allocation  outage loss  
本文献已被 CNKI 等数据库收录!
点击此处可从《上海交通大学学报》浏览原始摘要信息
点击此处可从《上海交通大学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号