认知无线网络中基于凸优化的功率分配研究  

Power allocation for cognitive radio network based on convex optimization

作　　者：谢军辉[1] 冯平[1] 

机构地区：[1]重庆邮电大学通信网测试技术重点实验室,重庆400065

出　　处：《计算机应用研究》2010年第3期1161-1162,1166,共3页Application Research of Computers

基　　金：重庆市教委自然科学基金资助项目(KJ080507)

摘　　要：主要研究认知无线网络中基于OFDM(orthogonal frequency dinsion multiplexing)的功率分配问题。为将认知用户(secondary user,SU)对主用户(primary user,PU)的干扰功率限制在主用户可容忍的范围内,同时最大化认知用户的传输速率,提出了基于凸优化理论的功率分配方案。仿真结果表明,在主用户可容忍的干扰极限和认知用户总功率约束下,该方案能最大化认知用户的传输速率。This paper focued on the power allocation for OFDM-based cognitive radio network. In order to maximize the transmission rate of secondary users and insure the interference introduced to the primary users is within a tolerable range, this paper proposed a power allocation scheme based on convex optimization theory. Simulation results show that this scheme can maximize the transmission rate with the interference and total power constraint.

关 键 词：认知无线电 正交频分复用 功率分配 凸优化 

分 类 号：TN929.5[电子电信—通信与信息系统]