大规模MIMO系统中动态导频分配

方昕; 张建锋; 曹海燕; 刘超; 潘鹏

doi:10.11999/JEIT151091

大规模MIMO系统中动态导频分配

doi: 10.11999/JEIT151091

2.
(杭州电子科技大学通信工程学院杭州 310016) ②(东南大学移动通信国家重点实验室南京 210024)

基金项目:

东南大学移动通信国家重点实验室开放研究基金(2012D18)，国家自然科学基金(61501158)，浙江省教育厅项目(Y201329723)，浙江省固态存储和数据安全关键技术重点科技创新团队项目(2013TD03)

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出版历程
- 收稿日期: 2015-09-23
- 修回日期: 2016-05-06
- 刊出日期: 2016-08-19

Dynamic Pilot Allocation in Massive MIMO System

2.
(School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310016, China)

Funds:

The Open Research Fund of National Mobile Communications Research Laboratory, Southeast University (2012D18), The National Natural Science Foundation of China (61501158), The Project of Zhejiang Province Educational Department of China (Y201329723), Key Scientific and Technological Innovation Team Project of Solid-state Storage and Data Security Technologies of Zhejiang Province (2013TD03)

摘要

摘要: 针对大规模多输入多输出(MIMO)系统中存在的导频污染问题，该文提出一种动态导频分配方案。所提方案利用目标小区与干扰小区用户之间的信号干扰强度差将干扰小区分为Uin和Uout两类，并对Uin中的用户进行最优导频分配，Uout中的用户进行随机导频分配来提升系统的平均下行可达和速率。同时，在存在额外正交导频组的情况下对所提方案做了进一步优化。仿真结果表明，所提的动态导频分配方案能够有效地提升大规模MIMO系统的性能。
- 大规模多输入多输出 /
- 导频污染 /
- 导频分配 /
- 可达和速率
Abstract: A dynamic pilot allocation scheme is proposed in case of the pilot contamination existing in massive MIMO system. Based on the signal to interference difference between the aim cell user and the interference cell user, the interference cell is divided intoUin and Uout. Specifically, in order to improve the average downlink achievable sum rates, the users in theUin are operated with the optimal pilot allocation, and the users in theUout are operated with the random pilot allocation. Simultaneously, the proposed pilot allocation scheme is further optimized with an extral set of orthogonal pilots. Simulation results show that the proposed dynamic pilot allocation scheme can enhance the downlink performance of the massive MIMO system effectively.
- Massive MIMO /
- Pilot contamination /
- Pilot allocation /
- Achievable sum rates

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参考文献(20)

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