基于天线选择技术的大规模下行MU-MIMO系统能效分析

发布时间：2018-05-20 13:14

本文选题：大规模MIMO系统 + 多用户MIMO系统　；参考：《电讯技术》2014年09期

【摘要】：为了提高大规模多用户多输入多输出(MU-MIMO)下行系统的能效,提出了一种基于发送天线选择技术的能效优化机制。首先建立了同时考虑发送功率与电路功耗的新的系统功耗模型,并基于该模型,分析了基站配置天线数目与所有接收终端用户数目对系统总功耗及能效的影响。然后通过理论推导得到了系统能效最优时的最优天线选择数目,并与使用全部天线时的系统能效进行比较。仿真结果表明,所提出的发送天线选择机制通过优化激活部分基站天线能够明显提高系统能效。在用户数为10、发送功率分别为40 W和10 W时,与使用全部天线相比,天线选择技术能够分别使得系统能效获得大约12%和78%的性能增益。
[Abstract]:In order to improve the energy efficiency of large scale multi-user MU-MIMO-MU-MIMO-based downlink system, an energy efficiency optimization mechanism based on transmit antenna selection technology is proposed. A new system power model considering both transmission power and circuit power is proposed. Based on this model, the effects of the number of base station antennas and the number of receiving terminal users on the total power consumption and energy efficiency of the system are analyzed. Then, the optimal number of antennas for optimal system energy efficiency is obtained by theoretical derivation, and compared with the system energy efficiency when all antennas are used. Simulation results show that the proposed antenna selection mechanism can significantly improve system energy efficiency by optimizing the activation of some base station antennas. When the number of users is 10 and the transmission power is 40W and 10W, compared with all antennas, the antenna selection technique can achieve about 12% and 78% performance gains for system energy efficiency, respectively.
【作者单位】：郑州大学信息工程学院;
【基金】：国家自然科学基金资助项目(61271421);国家自然科学基金青年科学基金资助项目(61301150) 高等学校博士点专项科研基金(新教师类)(20134101120001)~~
【分类号】：TN919.3

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