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 (5): 153-158.doi: 10.13190/j.jbupt.2018-194

• 研究报告 • 上一篇    

大规模MIMO系统中基于OMP的混合波束赋形方法

程振桥, 韦再雪, 杨鸿文   

  1. 北京邮电大学 信息与通信工程学院, 北京 100876
  • 收稿日期:2018-08-11 出版日期:2018-10-28 发布日期:2018-11-20
  • 作者简介:程振桥(1995-),女,博士生,E-mail:chengzhenqiao@bupt.edu.cn;杨鸿文(1964-),男,教授,博士生导师.
  • 基金资助:
    北京邮电大学博士生创新基金资助项目(XTCX201817)

Hybrid Beamforming Based on OMP Algorithm for Massive MIMO Systems

CHENG Zhen-qiao, WEI Zai-xue, YHANG Hong-wen   

  1. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2018-08-11 Online:2018-10-28 Published:2018-11-20

摘要: 为了在大规模多输入多输出(MIMO)系统中实现低开销、低成本的可靠通信,通过基于正交匹配追踪(OMP)算法的混合波束赋形,在低开销硬件限制下,探究了射频链路的数量、模数转换器数量、有限移相器精度的变化对混合波束赋形系统性能的影响,并与理想情况下的数字波束赋形性能进行对比.仿真结果表明,在射频链路中模数转换器数量较少和移相器精度较低时,基于此算法的波束赋形方案能够达到与理想数字波束赋形系统相近的性能指标.

关键词: 大规模多输入多输出, 波束赋形, 低硬件开销, 正交匹配追踪

Abstract: In order to achieve reliable communication with low time overhead and hardware cost in multiple-input multiple-output (MIMO) systems, hybrid beamforming based on orthogonal matching pursuit algorithm(OMP) is implemented, and low-overhead hardware constraint is considered. The performance of the hybrid beamforming system with the number of radio frequency(RF) chains and the accuracy of shifters is studied. And compare it with the performance of digital beamforming. The simulation results show that the performance of hybrid beamforming can approach the performance of digital beamforming system with less RF links and lower phase shifter accuracy.

Key words: multiple-input multiple-output, beamforming, low hardware cost, orthogonal matching pursuit

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