一种基于单调优化的多小区分布式波束成形算法  

A Distributed Multicell Beamforming Algorithm Based on Monotonic Optimizaton

作　　者：朱翠涛[1] 吕兴茹[1] 

机构地区：[1]中南民族大学电子信息工程学院,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2016年第2期85-90,共6页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(61103248);中央高校基本科研业务费专项(CZW15046)

摘　　要：提出了一种基于单调优化的多小区分布式波束成形算法,该算法首先去耦合将集中式全局和速率最大化问题转分布式优化问题,然后通过将目标函数构造为两个递增函数之差,进一步将其转换为单调优化问题.在此基础上,利用Polyblock外逼近法对问题进行了求解.仿真实验结果表明:该算法只需要使用本地信道信息,而收敛速率则更快.The algorithm based on monotonic optimization for distributed multicellular beamforming techniques proposed . The first step of the proposed algorithm is to simplify the objective function with the decouping characteristics and then decompose the WSR maximization problem into parallel single-cell sub problems which involve only local channel state information(CSI ).Moreover,the main idea is to rewrite the objective functions so that methods for monotonic can be used . After formulating the problem as a monotonic program ( MP) ,a polyblock outer approximation algorithm is devised to search for the optimal MP solution .Numerical simulation shows that the proposed algorithm has better convergence behavior and each base station utilizes only the local CSI to computer its beamforming vectors .

关 键 词：分布式波束成形 单调优化 加权和速率最大化 Polyblock外逼近法 

分 类 号：TN929.5[电子电信—通信与信息系统]