北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2018, Vol. 41 ›› Issue (2): 92-96.doi: 10.13190/j.jbupt.2017-044

• 研究报告 • 上一篇    下一篇

基于部分协作的多小区下行MIMO鲁棒双层预编码算法

蓝贤桂1, 曹杰1,2, 廖勇2   

  1. 1. 东华理工大学 机械与电子工程学院, 南昌 330013;
    2. 重庆大学 通信与测控中心, 重庆 400044
  • 收稿日期:2017-04-06 出版日期:2018-04-28 发布日期:2018-03-17
  • 作者简介:蓝贤桂(1979-),男,硕士生;廖勇(1982-),男,博士,副研究员,E-mail:liaoy@cqu.edu.cn.
  • 基金资助:
    国家自然科学基金项目(61501066);重庆市基础与前沿计划基金项目(cstc2015jcyjA40003);四川省应用基础研究计划基金项目(2016JY0179);重庆大学中央高校基本科研业务费项目(106112017CDJXY500001)

Robust Double-Layer Precoding Algorithm for Multi-Cell Downlink MIMO Based on Partial Collaboration

LAN Xian-gui1, CAO Jie1,2, LIAO Yong2   

  1. 1. School of Mchanical and Electronic Engineering, East China University of Technology, Nanchang 330013, China;
    2. Center of Communication and TT & C, Ministry of Education, Chongqing University, Chongqing 400044, China
  • Received:2017-04-06 Online:2018-04-28 Published:2018-03-17

摘要: 针对多小区协作多入多出(MIMO)系统中存在的信道状态信息(CSI)反馈回传过多的问题,提出了多小区部分协作MIMO系统预编码算法.首先建立了包含信道估计、量化和延时误差的联合误差模型,然后根据此信道误差模型,利用迫零和信漏噪比算法思想,提出一种多小区部分协作下的双层MIMO鲁棒预编码算法.数值分析及仿真结果表明,所提算法相比传统的多小区协作下行MIMO系统预编码算法,用户的误码率性能和系统和速率稍差,但在CSI反馈比特方面有一定优势.

关键词: 多小区, 多入多出, 部分协作, 预编码

Abstract: In order to reduce the feedback bits of channel state information (CSI) in multi-cell cooperative multiple input multiple output (MIMO) system, a multi-cell partial cooperative MIMO precoding algorithm is proposed. Firstly, a joint channel error model including channel estimation error, quantization error and delay error, is established. Then, by using zero forcing and signal to leakage and interference ratio, a double-layer MIMO robust precoding algorithm is proposed. Numerical analysis and simulation results show that, compared with the traditional multi-cell MIMO system precoding algorithms, the bit error rate and the sum rate capacity are slightly worse, but the proposed algorithm has great advantage in CSI feedback bits.

Key words: multi-cell, multiple input multiple output, partial cooperative, precoding

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