| 摘要: |
| 未来第5代移动通信系统(5G)中无线数据业务量的爆发性增长推动着研究人员发展新的颠覆性技术。作为5G的关键候选技术之一，大规模多入多出(MIMO)在基站使用远超激活终端数的天线，能增加一个数量级的频谱效率并大幅降低发射功率。首先介绍了大规模MIMO的系统模型和理论性能，其次分析和归纳了在信道测量与建模、信道信息获取、传输方法的研究成果，然后简述了实验和测试进展，最后讨论了未来研究方向。 |
| 关键词: 大规模MIMO 5G 频谱效率 导频污染 信道建模 信道信息获取 预编码 |
| DOI： |
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| 基金项目: |
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| An overview of massive MIMO for 5G wireless systems |
| ZHANG Lei,DAI Hong |
| () |
| Abstract: |
| The explosive growth of wireless data traffic in future fifth generation(5G) mobile communication systems has pushed researchers to develop new disruptive technologies. Massive multiple-input multiple-output(MIMO),as one of 5G key technology candidates,can increase tenfold spectral efficiency and save the transmit power greatly through the use of a large excess of service antennas in base stations over active terminals. This paper presents an overview of massive MIMO with regard to system models and theoretical performance,channel measurement and modeling,channel state information acquisition,transmission techniques,experimental and test results.It also discusses several future research topics. |
| Key words: massive MIMO 5G spectral efficiency pilot contamination channel modeling channel information acquisition precoding |
《电讯技术》编辑部 