Research on interleaved training for massive MIMO downlink with multi-user zero-forcing precoding

Cheng ZHANG; Minjie DING; Chang LIU; Jing Yindi; Fei YU; Yongming HUANG

doi:10.11959/j.issn.1000-436x.2023163

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Research on interleaved training for massive MIMO downlink with multi-user zero-forcing precoding

Papers | 更新时间：2024-06-06

- Research on interleaved training for massive MIMO downlink with multi-user zero-forcing precoding
- Journal on Communications Vol. 44, Issue 9, Pages: 58-69(2023)
- 作者机构：
  
  1. 东南大学移动通信全国重点实验室，江苏南京 210096
  2. 网络通信与安全紫金山实验室，江苏南京 211111
  3. 阿尔伯塔大学电气与计算机工程系，埃德蒙顿 T6G1H9
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(62271140);The National Natural Science Foundation of China(62225107);The National Key Research and Devel-opment Program of China(2018YFB1800801);The Fundamental Research Funds for the Central Universities(2242022K60002)
- DOI：10.11959/j.issn.1000-436x.2023163
  CLC： TN92
- Online First：2023-09，
  
  Published：25 September 2023
- 稿件说明：
移动端阅览
Cheng ZHANG, Minjie DING, Chang LIU, et al. Research on interleaved training for massive MIMO downlink with multi-user zero-forcing precoding[J]. Journal on Communications, 2023, 44(9): 58-69.
DOI：

Cheng ZHANG, Minjie DING, Chang LIU, et al. Research on interleaved training for massive MIMO downlink with multi-user zero-forcing precoding[J]. Journal on Communications, 2023, 44(9): 58-69. DOI： 10.11959/j.issn.1000-436x.2023163.

摘要

为解决频分双工大规模 MIMO 的信道获取开销问题，针对服务质量保障与基站采用迫零（ZF）预编码的典型场景，引入对信干噪比（SINR）的监督机制，设计多用户逐根天线交替训练方案。进而考虑交替训练引入的时间开销，设计基于天线分组的多用户交替训练方案。然后推导了2种方案的平均训练长度、传输成功率以及平均有效和频谱效率闭合表达式。理论与仿真揭示了发射功率、SINR 阈值、用户数、分组长度与信道误差水平等参数的影响，并证明相比全训练与部分训练，所提方案可显著降低导频开销，提升传输成功率。

Abstract

To solve the channel acquisition overhead problem of frequency division duplex massive MIMO

for the typical scenario of zero-forcing (ZF) precoding at the base station with users’ quality of service guarantee

a supervisory mechanism for the signal-to-interference-and-noise ratio (SINR) was introduced

and a multi-user antenna-by-antenna interleaved training scheme was designed.Then

considering the additional time overhead introduced by the interleaved training

a multi-user interleaved training scheme based on antenna grouping was designed.Closed-form expressions of the average training length

transmission success rate

and average effective sum spectrum efficiency were derived for the proposed schemes.Theoretical and simulation results reveal the impact of transmit power

SINR threshold

user number

group length

and the error level of channel on the performance of the proposed schemes

and demonstrate that the proposed schemes significantly reduce the pilot overhead and improve the transmission success rate compared to the full and partial training.

关键词

Keywords

references

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