摘要
对MIMO系统在毫米波衰落信道下的能效功率分配进行研究,以期实现绿色传输。考虑发送端采用天线选择技术,接收端采用最大比合并技术,给出系统能量效率公式,并构建系统基于能效最大化的目标优化函数。利用拉格朗日乘子法,获得迭代功率分配方案。利用排序法及朗伯函数给出简单的闭式功率分配方案。利用Matlab软件验证所提功率分配方案的有效性。仿真结果表明,文章提出的功率分配方案较穷举搜索法EE性能得到了明显提升,是一种复杂度低的优化算法,能快速收敛到EE最大值。
The energy efficiency(EE)power allocation of the MIMO system in the millimeter wave fading channel is studied to realize the green transmission.Considering that the transmitting end adopts the antenna selection technology,the receiving end adopts the maximum ratio combining technique,gives the system EE formula,and constructs the system based on the EE maximizing target optimization function.The Lagrangian multiplier method is used to obtain an iterative power allocation scheme.A simple closed power allocation scheme is given by using the ordering method and the Lambert function.The effectiveness of the proposed the power allocation schemes is verified by Matlab software.The simulation results show that compared with exhaustive search method.The power allocation scheme in this paper improves EE performance obviously,and is a low complexity optimization algorithm,which could quickly converge to EE maximum.
作者
张永棠
Zhang Yongtang(School of Computer,Guangdong Neusoft Institute,Foshan 528225,China)
出处
《信息通信技术》
2020年第2期70-75,共6页
Information and communications Technologies
基金
国家自然科学基金(61663029)
广东省高校重点平台与特色创新项目(2017KTSCX200)。
