新的认知无线电功率控制博弈算法  

Novel power control game algorithm for cognitive radios

作　　者：程世伦[1] 杨震[1] 张晖 

机构地区：[1]南京邮电大学信号与信息处理研究所,江苏南京210003 [2]江苏省图像处理与图像通信重点实验室,江苏南京210003

出　　处：《通信学报》2007年第3期100-107,共8页Journal on Communications

基　　金：教育部重点科技基金资助项目(206055);江苏省高校自然科学重大基础研究资助项目(06KJA51001)~~

摘　　要：针对认知无线电系统中各种用户通信需求,采用多载波的码分多址(MC-CDMA)认知无线电(CR)系统,研究如何克服认知用户对主用户干扰和通信中断问题,给出了一种认知用户切换策略,为实现认知频谱资源的有效分配,提出了一种新的认知无线电功率控制算法。仿真结果表明,该算法既满足不同种类用户SIR要求,又达到了系统吞吐量的提高,实现了对不同用户发射功率有效控制,系统性能明显提高。To meet the communications needs between licensed users and secondary users in cognitive radios and to ensure that the unimpaired operation of licensed users and secondary users＇ communications be not intermitted, a MC-CDMA cognitive radios system and a hand-off technique were proprosed for secondary users. In order to efficiently use the limited cognitive radio resources, a novel power control game algorithm in CR systems was adopted. The simulation results show that the novel algorithm can regulate their transmitter powers to meet the different SIR requirements and enhance the total throughput effectively. The performance of CR system is thereby improved obviously.

关 键 词：认知无线电 功率控制 信干比 吞吐量 博弈论 

分 类 号：TN929.5[电子电信—通信与信息系统]