| K均值聚类的大规模MIMO导频分配策略 |
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| 引用本文： | 李贵勇,于敏,梁泽乾.K均值聚类的大规模MIMO导频分配策略[J].重庆邮电大学学报(自然科学版),2022,34(1):42-50. |
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| 作者姓名： | 李贵勇 于敏 梁泽乾 |
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| 作者单位： | 重庆邮电大学 通信与信息工程学院,重庆400065 |
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| 基金项目： | 国家科技重大专项项目（2017ZX03001021-004）；重庆教委科学技术研究项目（KJ1500428） |
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| 摘 要： | 针对大规模多输入多输出(multiple input multiple output,MIMO)系统中亟待解决的导频污染问题,提出一种基于K均值聚类的导频分配策略来减轻导频污染问题.该方案基于大尺度衰落因子对用户进行门限分组,再基于用户位置信息对用户进行K均值聚类分组,并对不同组别的用户采用不同的导频分配方案.仿真结果...
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| 关 键 词： | 大规模MIMO 导频污染 用户分组 K均值聚类 大尺度衰落因子 |
| 收稿时间： | 2020/3/19 0:00:00 |
| 修稿时间： | 2021/12/13 0:00:00 |
Pilot assignment strategy for massive MIMO based on K-means clustering |
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| LI Guiyong,YU Min,LIANG Zeqian.Pilot assignment strategy for massive MIMO based on K-means clustering[J].Journal of Chongqing University of Posts and Telecommunications,2022,34(1):42-50. |
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| Authors: | LI Guiyong YU Min LIANG Zeqian |
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| Institution: | School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China |
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| Abstract: | Aiming at the pilot pollution problem to be solved urgently in large-scale multiple input multiple output (MIMO) systems, a pilot assignment strategy based on K-means clustering is proposed to alleviate the pilot pollution problem. In this scheme, threshold grouping based on large-scale fading factors and K-means clustering grouping based on user location information are used to group users multiple times, and different pilot allocation schemes are performed for users in different groups. Simulation results show that the massive MIMO pilot allocation scheme based on K-means clustering can effectively suppress the impact of pilot pollution on the performance of massive MIMO systems, improve pilot efficiency and reduce pilot overhead. |
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| Keywords: | massive MIMO pilot pollution user grouping K_means clustering large-scale fading factor |
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