| 分布式天线系统中基于天线选择的能量效率优化 |
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| 引用本文： | 汪乔瑜,崔海霞.分布式天线系统中基于天线选择的能量效率优化[J].华南师范大学学报(自然科学版),2020,52(6):121-127. |
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| 作者姓名： | 汪乔瑜 崔海霞 |
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| 作者单位： | 1.华南师范大学物理与电信工程学院，广州 510006 |
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| 基金项目： | 国家自然科学基金;广东省自然科学基金;广州市科技计划 |
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| 摘 要： | 为了进一步解决无线通信系统的能量消耗问题, 以分布式天线系统单小区为模型，提出了一种将天线选择和功率分配技术相结合的最大能量效率优化算法(max-ANPO-EE算法):通过选取用户一定距离范围内的天线后，利用拉格朗日函数和次梯度得到各个天线的最优发送功率，从而推导出相应的能量效率性能表达式，得到最优的能量效率.仿真结果表明:在用户和天线随机分布的单蜂窝小区网络内，max-ANPO-EE算法能获得比较好的性能.
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| 关 键 词： | 分布式天线系统 天线选择 功率分配 能量效率优化 |
| 收稿时间： | 2020-01-07 |
Energy Efficiency Optimization Based on Antenna Selection in Distributed Antenna Systems |
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| Institution: | 1.School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China2.Shaoxing Branch of China United Network Communications Co. LTD, Shaoxing 312000, China |
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| Abstract: | An algorithm of maximum energy efficiency optimization (max-ANPO-EE algorithm) that combines antenna selection and power allocation technology is proposed, based on a single-block model for the distributed antenna system, to solve the problem of energy consumption of the wireless communication system. The optimal energy efficiency can be achieved by choosing the antennas within a certain distance from the user, calculating the optimal transmit power of each antenna with Lagrange function and gradient and deducing the expression of the correspon-ding energy efficiency performance. The simulation results show that the max-ANPO-EE algorithm can achieve be-tter performance in a single-cell network with random distribution of users and antennas. |
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