认知无线电中基于博弈论的联合功率和速率控制算法  

Game-theoretic Approach to Joint Rate and Power Control for Cognitive Ratdo

作　　者：关宏博[1,2] 张广春[1] 

机构地区：[1]沈阳军区联勤部药品仪器检验所,沈阳110026 [2]东北大学信息科学与工程学院,沈阳110819

出　　处：《计算机科学》2011年第B10期402-405,共4页Computer Science

摘　　要：研究了认知无线电(CR)中共享频谱状态下的联合功率和速率控制问题。功率控制技术是认知无线电的关键技术之一,而下一代的网络也对速率的多样化传输提出了要求。将系统中次级用户(SU)间的关系假定为非合作的竞争性关系,同时考虑到次级用户对主用户的干扰容限,提出了基于博弈论的联合功率控制算法(NPRG),并证明了该算法的纳什均衡的存在性、唯一性。仿真结果证明了算法具有较快的收敛性,且能收敛到较低的功率和较高的速率。We studied joint power and rate control for cognitive radios in the underlay type.Power control is one of the key technology in cognitive radio,and the next generation wireless systems also will be required to support with diffe-rent transmission rates.In this paper we assumed the problem between second users as a non-cooperative game,and one power control algorithm was proposed,subject to the tolerable interference limits.And it is proved that the Nash equilibrium of the algorithm is the existence,uniqueness,the simulation results show that the method has a faster convergence,and can converge to the lower power and higher rates.

关 键 词：认知无线电 博弈论 功率控制 速率控制 

分 类 号：TN99[电子电信—信号与信息处理]