Femtocell网络中基于联合传输的分簇与功率分配算法  

Joint transmission-based clustering and power allocation algorithm in femtocell networks

作　　者：龚胜丽 金勇 Gong Shengli;Jin Yong(Chongqing Key Laboratory of Mobile Communications Technology,Chongqing University of Posts&Telecommunications,Chongqing 400065,China;Institute of Communications Engineering Applications,Chongqing University of Posts&Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学,移动通信技术重庆市重点实验室,重庆400065 [2]重庆邮电大学,通信工程应用研究所,重庆400065

出　　处：《计算机应用研究》2018年第10期3041-3043,3052,共4页Application Research of Computers

基　　金：长江学者和创新团队发展计划资助项目(IRT1299);重庆市科委重点实验室专项经费资助项目(cstc2013yykfA40010)

摘　　要：针对家庭基站(femtocell)密集部署时的下行干扰问题,提出一种基于多点协作联合传输的分簇与功率分配相结合的算法。首先根据受到的干扰程度进行分簇,将干扰强的家庭基站分到同一个簇,簇内所有家庭基站通过寻找对自身最有利的基站进行协作,将干扰信号转变有用信号,联合传输为用户提供服务,提升用户的信干噪比来保证用户性能,簇间则复用相同的频谱资源;然后通过给用户分配合适的功率,使得总传输速率最大。仿真结果表明,所提算法能够在抑制系统干扰的同时提高系统的吞吐量。For femtocell downlink interference problem in the case of dense deployment of femtocell,this paper proposed an algorithm combining dynamic clustering algorithm based on multi-point cooperative(CoMP)joint transmission and power allocation algorithm.According to the degree of interference,it divided femtocells into several clusters,and divided the cells with bigger interference in the same cluster.All base stations in a cluster by finding the femtocell that was most beneficial to them for joint transmission,to converting interference signals into useful signals,joint transmission to provided users with services,which could guarantee the performance of users by increasing the signal-to-noise ratio of users,and used the same frequency resources among clusters.Then,it achieved the maximum transmission rate by allocating the appropriate power to the user.Simulation results show that the proposed algorithm can suppress the system interference and improve the system throughput.

关 键 词：家庭基站 联合传输 分簇 功率分配 

分 类 号：TN929.5[电子电信—通信与信息系统]