Pilot allocation based on users’ location and user classification in massive MIMO system

Haiyan CAO; Zichang MA; Xiaohui YANG; Wenjuan HU; Fangmin XU; Xin FANG

doi:10.11959/j.issn.1000-0801.2019191

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Pilot allocation based on users’ location and user classification in massive MIMO system

research and development | 更新时间：2024-06-05

- Pilot allocation based on users’ location and user classification in massive MIMO system
- Telecommunications Science Vol. 35, Issue 10, Pages: 92-99(2019)
- 作者机构：
- 作者简介：
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- DOI：10.11959/j.issn.1000-0801.2019191
  CLC： TN929.5
- Published Online：2019-10，
  
  Published：20 October 2019
- 稿件说明：
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Haiyan CAO, Zichang MA, Xiaohui YANG, et al. Pilot allocation based on users’ location and user classification in massive MIMO system[J]. Telecommunications science, 2019, 35(10): 92-99.
DOI：

Haiyan CAO, Zichang MA, Xiaohui YANG, et al. Pilot allocation based on users’ location and user classification in massive MIMO system[J]. Telecommunications science, 2019, 35(10): 92-99. DOI： 10.11959/j.issn.1000-0801.2019191.

摘要

针对大规模MIMO通信系统中存在的导频污染问题，提出了一种基于用户位置和用户分类的导频分配方案。该方案根据路径损耗和到达角设计目标函数及合理阈值，通过将用户的目标函数与阈值进行比较，把系统中所有用户分为高干扰和低干扰两类，接着为低干扰用户复用导频序列、高干扰用户分配额外正交导频序列来减轻导频污染。仿真结果表明，该方案提高了通信系统性能。

Abstract

Aiming at the problem of pilot contamination in massive MIMO systems

a pilot allocation scheme based on users’ location and user classification was proposed.The scheme designed the objective function and reasonable threshold based on path loss and angle of arrival.By comparing the user’s objective function with the threshold

all users in the system were divided into two types:high interference and low interference

and the low-interference users multiplex pilot sequences and extra orthogonal pilot sequences were assigned to high interference users to mitigate pilot contamination.Simulation results show that the scheme improves the performance of the communication system.

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references

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