基于迭代近似的异构网络功率控制算法  

Power Control Algorithm in Heterogeneous Network Based on Iterative Approximation

作　　者：刘岗[1] 赵杭生 邵鸿翔[1,3] 李大力 LIU Gang;ZHAO Hangsheng;SHAO Hongxiang;LI Dali(College of Communication Engineering,PLA University of Science and Technology,Nanjing 210007,China;Nanjing Telecommunication Technology Research Institute,Nanjing 210007,China;Luoyang Institute of Science and Technology,Luoyang,Henan 471023,China)

机构地区：[1]解放军理工大学通信工程学院,南京210007 [2]南京电讯技术研究所,南京210007 [3]洛阳理工学院,河南洛阳471023

出　　处：《计算机工程》2018年第9期95-100,共6页Computer Engineering

基　　金：国家自然科学基金(61471395);江苏省自然科学基金(BK20161125)

摘　　要：针对频谱资源短缺的问题,提出一种保证宏蜂窝用户服务质量的功率控制算法。根据建立的功率优化模型,通过3种不同方式对非凸目标函数进行凸优化估计处理,将其转换为若干凸子问题并迭代近似,从而得到原非凸目标函数的解。仿真结果表明,该算法经过数次迭代后,能收敛到原优化问题的解,提高系统吞吐量。To solve the problem of shortage of spectrum resources,a power control algorithm is proposed under the condition that the Quality of Service(QoS)of Macro-cellular User Equipment(MUE)is satisfied.It approximates the nonconvex objective function in three different approaches,and converts the problem into a series of convex subproblems,then solves the subproblems iteratively and the solution of the original nonconvex objective function is obtained finally.Simulation results show that after several iterations,the proposed algorithm can effectively obtain the solution of the original optimization problem and improve the system throughput.

关 键 词：频谱资源 异构网络 功率控制 凸优化 吞吐量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]