Joint transmitter-receiver hybrid beamforming design for multi-user mmWave massive MIMO systems

doi:10.7523/j.issn.2095-6134.2021.02.011

Abstract

Abstract: Millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems can achieve several orders of magnitude improvement in spectral efficiency and energy efficiency. However, due to limitations of hardware complexity and energy cost, the conventional fully digital beamforming methods which require one radio frequency chain per antenna element are no longer viable. To address this challenge, hybrid digital and analog beamforming architectures are proposed. In this paper, we consider the practical partially-connected hybrid beamforming structure and propose to jointly design the hybrid beamformers of both the base station and the users for a multi-user massive MIMO system. For the purpose of achieving a high array gain, a sparse principal component analysis based algorithm is utilized to obtain the corresponding analog precoding and combining matrices. Then we develop an iterative algorithm to jointly design the digital precoding and combining matrices under a weighted minimum mean square error criteria. Simulations over mmWave channels demonstrate that our scheme can approach the performance of those with fully-connected structures, with rather high energy efficiency.

Key words: mmWave communication, hybrid beamforming, multi-user massive MIMO, energy efficiency

CLC Number:

TN919

YIN Feng, QIU Ling, LIANG Xiaowen. Joint transmitter-receiver hybrid beamforming design for multi-user mmWave massive MIMO systems[J]. Journal of University of Chinese Academy of Sciences, 2021, 38(2): 252-259.

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