摘要
针对多用户Massive MIMO系统下行链路,根据发射功率和天线数对系统能效的影响,建立系统能效资源分配模型,并提出了一种基于能效的资源分配迭代方案。在利用Lambert W函数求解天线数的基础上,采用一种低复杂度的天线选择算法求解天线子集,最后利用分数规划性质与凸优化理论对功率进行分配,使系统能效最优。仿真结果表明,在满足用户QoS的条件下,所提出的能效资源分配方案能有效提高能效,提升系统性能。
Appropriate resource allocation has great significance for enhancing the energy efficiency(EE)for Massive MIMO system.Therefore,we formulate this problem as transmit power and antenna-based resource allocation in multi-user downlink Massive MIMO system,and solve it with the resource allocation iteration mechanism based on energy efficiency.First,a low complexity antenna selection algorithm is used to implement antenna subset after achieve number of antennas by the Lambert W function.Second,the properties of fractional programming and convex optimization are used to allocate transmit power.The simulation results indicate that the resource allocation scheme can effectively improve energy efficiency and enhance system performance.
作者
刘紫燕
刘世美
唐虎
冯丽
LIU Ziyan;LIU Shimei;TANG Hu;FENG Li(College of Big Data&Information Engineering,Guizhou University,Guiyang 550025,China;Chongqing Electric Power Company,State Grid Corporation of China,Chongqing 400014,China)
出处
《中国科技论文》
CAS
北大核心
2018年第14期1658-1663,共6页
China Sciencepaper
基金
贵州省科学技术基金项目(黔科合基础[2016]1054)
贵州省联合资金项目(黔科合LH字[2017]7226号)
贵州大学2017年度学术新苗培养及创新探索专项(黔科合平台人才[2017]5788)
关键词
MIMO系统
能效
资源分配
Massive MIMO system
energy efficiency
resource allocation
