Pilot allocation based on user location information in massive MIMO systems

Jia-liang DU; Lin YANG; Xin-lei SONG

doi:10.11959/j.issn.1000-436x.2017172

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Pilot allocation based on user location information in massive MIMO systems

Correspondences | 更新时间：2024-06-05

- Pilot allocation based on user location information in massive MIMO systems
- Journal on Communications Vol. 38, Issue 8, Pages: 156-164(2017)
- 作者机构：
  
  电子科技大学通信抗干扰技术国家级重点实验室，四川成都 611731
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61370012);The National Natural Science Foundation of China(61571082);The Nationa1 Science and Techno1ogy Major Project of the Ministry of Science and Techno1ogy of China(2016ZX03001015-004)
- DOI：10.11959/j.issn.1000-436x.2017172
  CLC： TN929.5
- Online First：2017-08，
  
  Published：25 August 2017
- 稿件说明：
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Jia-liang DU, Lin YANG, Xin-lei SONG. Pilot allocation based on user location information in massive MIMO systems[J]. Journal on Communications, 2017, 38(8): 156-164.
DOI：

Jia-liang DU, Lin YANG, Xin-lei SONG. Pilot allocation based on user location information in massive MIMO systems[J]. Journal on Communications, 2017, 38(8): 156-164. DOI： 10.11959/j.issn.1000-436x.2017172.

摘要

针对大规模MIMO系统中的导频污染问题，提出了一种基于用户位置信息的导频分配方案。所提方案根据用户位置在以所在小区基站为极点的极坐标系下的极角大小，对用户进行排序并依次分配导频。方案结合了定向大线的特点，通过把导频的复用距离控制在较远的范围内，从而达到降低导频污染、提高系统可达和速率的目的。仿真结果表明，所提方案不仅能够有效降低用户间的导频污染，还能缩小不同用户间的性能差距，提高系统的公平性。

Abstract

In order to so1ve the prob1em of pi1ot contamination in massive MIMO systems，a pi1ot a11ocation scheme based on user 1ocation information was proposed.The proposed scheme arranged the users according to the po1ar ang1e of the user 1ocation in the po1ar coordinate system with the base station of the ce11 as the po1e，and assigned the pi1ots sequentia11y.Combining with the characteristics of directiona1 antenna，the scheme can reduce the pi1ot contamination and improve the achievab1e rate of the system by contro11ing the mu1tip1exing distance of the pi1ot to a far range.Simu1ation resu1ts show that the proposed scheme can not on1y reduce the pi1ot po11ution between users，but a1so reduce the performance gap between different users and improve the fairness of the system.

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references

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