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一种基于嵌套晶格码的MIMO中继多用户矢量预编码设计

姜华 焦军彩 都思丹

姜华, 焦军彩, 都思丹. 一种基于嵌套晶格码的MIMO中继多用户矢量预编码设计[J]. 电子与信息学报, 2022, 44(10): 3485-3491. doi: 10.11999/JEIT210729
引用本文: 姜华, 焦军彩, 都思丹. 一种基于嵌套晶格码的MIMO中继多用户矢量预编码设计[J]. 电子与信息学报, 2022, 44(10): 3485-3491. doi: 10.11999/JEIT210729
JIANG Hua, JIAO Juncai, DU Sidan. Vector Precoding Design Based on Nested-lattice-coding for MU-MIMO Relay Systems[J]. Journal of Electronics & Information Technology, 2022, 44(10): 3485-3491. doi: 10.11999/JEIT210729
Citation: JIANG Hua, JIAO Juncai, DU Sidan. Vector Precoding Design Based on Nested-lattice-coding for MU-MIMO Relay Systems[J]. Journal of Electronics & Information Technology, 2022, 44(10): 3485-3491. doi: 10.11999/JEIT210729

一种基于嵌套晶格码的MIMO中继多用户矢量预编码设计

doi: 10.11999/JEIT210729
基金项目: 国家自然科学基金(61702259),江苏省高校自然科学研究面上项目(17KJB510024)
详细信息
    作者简介:

    姜华:男,博士后,研究方向为大规模MIMO通信、无线通信中的信号处理、机器学习等

    焦军彩:女,副教授,研究方向为信号处理、机器学习等

    都思丹:女,博士,教授,博士生导师,主要研究方向为无线通信传输技术

    通讯作者:

    姜华 hua@nju.edu.cn

  • 中图分类号: TN919.3

Vector Precoding Design Based on Nested-lattice-coding for MU-MIMO Relay Systems

Funds: The National Natural Science Foundation of China(61702259), The Natural Science Foundation of the Jiangsu Higher Education Institutions of China (17KJB510024)
  • 摘要: 针对多输入多输出(MIMO)中继多用户系统的多址传输问题,为了提高系统可达速率和误码率性能,该文利用嵌套晶格码具有可达加性高斯白噪声信道容量的特性,设计一种基站和中继联合预编码的方法。基站端的嵌套晶格码结合矢量扰动(VP)预编码,以控制发送信号的功率。由于矢量扰动预编码和嵌套晶格码都存在相同的模运算步骤,因此在中继端的模运算抑制噪声功率的同时消除了冗余矢量。接着实现中继联合迫整数预编码方法,这种基站/中继混合预编码技术能够控制等效噪声功率,实现对蜂窝用户的有效信号传输。更进一步地,在给出整系数矩阵和扰动矢量矩阵的计算方法后,以最大化系统可达速率为目标对基站和中继的功率实现最优分配。实验结果表明,该方案在可达速率和误码性能方面优于现有方案。
  • 图  1  系统模型

    图  2  嵌套网格

    图  3  基站嵌套格码及矢量预编码处理

    图  4  中继端模运算和转发

    图  5  不同预编码方案的发射总功率与系统和速率的关系

    图  6  不同预编码方案的发射总功率与系统误码率的关系

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  • 被引次数: 0
出版历程
  • 收稿日期:  2021-07-19
  • 修回日期:  2022-01-17
  • 录用日期:  2022-02-15
  • 网络出版日期:  2022-02-18
  • 刊出日期:  2022-10-19

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