中国邮电高校学报(英文版) ›› 2019, Vol. 26 ›› Issue (3): 44-49.doi: 10.19682/j.cnki.1005-8885.2019.0025

• Wireless • 上一篇    下一篇

Robust hybrid beamforming design for millimeter-wave massive MIMO systems

张凯1,尹长川2,Xu Guixian1,刘丹谱2   

  1. 1. 北京邮电大学
    2. 北京邮电大学信息与通信工程学院
  • 收稿日期:2018-03-28 修回日期:2019-04-19 出版日期:2019-06-30 发布日期:2019-06-30
  • 通讯作者: 张凯 E-mail:zk513@163.com
  • 基金资助:
    中国国家自然科学基金;中国国家自然科学基金

Robust hybrid beamforming design for millimeter-wave massive MIMO systems

  • Received:2018-03-28 Revised:2019-04-19 Online:2019-06-30 Published:2019-06-30
  • Contact: Kai Zhang E-mail:zk513@163.com
  • Supported by:
    National Nature Science Foundation of China;National Nature Science Foundation of China

摘要: Hybrid analog-digital beamforming is recognized as a promising solution for a practical implementation of massive multiple-input multiple-output (MIMO) systems based on millimeter-wave (mmWave) technology. In view of the overwhelming hardware cost and excessive power consumption and the imperfection of thechannel state information (CSI), a robust hybrid beamforming design is proposed for the mmWave massive MIMO systems, where the robustness is defined with respect to imperfect knowledge or error of the CSI) at the transmitter due to limited feedback and/or imperfect channel estimation. Assuming the errors of the CSI are bounded, the optimal hybrid beamforming design with robustness is formulated to a mean squared error (MSE) minimization problem. An iterative semidefinite programming (SDP) based algorithm is proposed to obtain the beamforming matrices. Simulation results show that the proposed robust design can provide more than 4 dB performance gain compared to that of non-robust design.

关键词: hybrid beamforming, robust, massive MIMO, millimeter-wave, MSE

Abstract: Hybrid analog-digital beamforming is recognized as a promising solution for a practical implementation of massive multiple-input multiple-output (MIMO) systems based on millimeter-wave (mmWave) technology. In view of the overwhelming hardware cost and excessive power consumption and the imperfection of thechannel state information (CSI), a robust hybrid beamforming design is proposed for the mmWave massive MIMO systems, where the robustness is defined with respect to imperfect knowledge or error of the CSI) at the transmitter due to limited feedback and/or imperfect channel estimation. Assuming the errors of the CSI are bounded, the optimal hybrid beamforming design with robustness is formulated to a mean squared error (MSE) minimization problem. An iterative semidefinite programming (SDP) based algorithm is proposed to obtain the beamforming matrices. Simulation results show that the proposed robust design can provide more than 4 dB performance gain compared to that of non-robust design.

Key words: hybrid beamforming, robust, massive MIMO, millimeter-wave, MSE

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