| 摘要: |
| 大规模多入多出(Multiple-Input Multiple-Output,MIMO)技术在移动通信系统中发挥着至关重要的作用，但在部署中却引入了干扰。为了消除大规模MIMO干扰，业界围绕低复杂度的预编码算法开展了大量的研究工作。将已有大规模MIMO系统的预编码技术进行了归纳，重点分析了线性预编码和非线性预编码中经典算法的复杂度和优缺点，最后对大规模MIMO预编码技术的发展趋势进行了探讨。 |
| 关键词: 移动通信 大规模MIMO 干扰消除 下行预编码 |
| DOI：10.20079/j.issn.1001-893x.220419003 |
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| 基金项目:重庆市自然科学基金资助项目（cstc2019jcyj-msxmX0017） |
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| Research progress of downlink precoding techniques for massive MIMO systems |
| ZHANG Dongxue,DU Jieru,HE Shibiao,LIAO Yong |
| (School of Electronic Information,Chongqing Institute of Engineering,Chongqing 400056,China;School of Microelectronics and Communication Engineering,Chongqing University,Chongqing 400044,China) |
| Abstract: |
| Massive multiple-input multiple-output(MIMO) technology plays a vital role in mobile communication systems,nevertheless interference is introduced in deployment.In order to eliminate the interference in massive MIMO systems,the industry has carried out a lot of research work around the low complexity precoding algorithms.The precoding technology of existing massive MIMO systems are summarized,with focuses on the complexity,advantages and disadvantages of classical algorithms in linear precoding and nonlinear precoding.Finally,the development trend of massive MIMO precoding technology is discussed. |
| Key words: mobile communication massive MIMO interference elimination downlink precoding |
