Massive MIMO异构网的高能效资源分配

发布时间：2018-07-08 13:55

本文选题：异构网 + 能量效率　；参考：《信号处理》2017年07期

【摘要】：为满足第五代移动通信系统高频谱效率和高能量效率的需求,提出一种工作在不同频段下行两层异构网中的高能量效率资源分配方法,考虑用户数据率需求和基站最大发射功率。天线和传输带宽是影响系统能量效率的关键因素。通过研究宏基站和小基站的天线资源和带宽分配发现:当系统天线数很大时,发射功耗的影响可以忽略不计;给定带宽分配因子时,达到宏基站或微基站最大发射功率的天线分配因子几乎可以达到最高能效;给定天线分配因子时,系统平均总功耗是关于带宽分配因子的下凸函数,存在全局最优带宽分配因子使能效最高。仿真结果表明,与给定带宽和天线资源的异构网和小小区网络相比,所提出的异构网可以显著提高系统能量效率,而且在大量用户、高数据率需求时能效提升更明显。
[Abstract]:In order to meet the demand of high spectral efficiency and high energy efficiency in the fifth generation mobile communication system, a method of high energy efficiency resource allocation working in two layers of heterogeneous networks with different frequency bands is proposed. The user data rate requirement and the maximum transmit power of the base station are taken into account. Antenna and transmission bandwidth are the key factors affecting the energy efficiency of the system. By studying the antenna resource and bandwidth allocation of the macro base station and the small base station, it is found that when the antenna number of the system is very large, the effect of transmission power consumption can be ignored, and when the bandwidth allocation factor is given, The antenna allocation factor that reaches the maximum transmit power of a macro base station or a microbase station can almost achieve the highest energy efficiency; given the antenna allocation factor, the average total power consumption of the system is a convex function of the bandwidth allocation factor. There is a global optimal bandwidth allocation factor to maximize energy efficiency. The simulation results show that compared with the heterogeneous networks and small cell networks with given bandwidth and antenna resources, the proposed heterogeneous networks can significantly improve the energy efficiency of the system.
【作者单位】：北京航空航天大学电子信息工程学院;北京三星通信技术研究有限公司;
【基金】：国家自然科学基金重大国际合作项目(61120106002)
【分类号】：TN919.3;TN929.5

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