摘要
相比第四代(4G),第五代(5G)移动通信需要在无线传输技术上取得突破性创新,以实现峰值吞吐率和频谱效率10倍的目标。进一步挖掘多天线的空间复用能力是实现5G的关键技术。首先介绍了毫米波的无线传输特性以及外场实测性能结果;然后分析了大规模天线毫米波频段通信的技术特点,并就大规模天线在6GHz以下频段与毫米波应用进行对比。最后例举了大规模天线毫米波通信的典型应用场景,并针对各种场景的难点以及技术特点进行分析总结。
Compared with 4G,5G Mobile communication needs to breakthrough innovation in wireless transmission technology and achieve the goal of ten times peak throughput and spectral efficiency.The further exploration on spatial multiplexing capacity of multiple antennas is the key to achieving 5G.Firstly,the wireless transmission characteristics of the mmWave and the field-measured performance results are introduced.Then,the technical characteristics of massive antenna mmWave band communication are analyzed,and the massive antenna is compared with the mmWave application in the frequency band below 6GHz.Finally,examples of typical application scenarios of massive antenna mmWave communication are given,and the difficulties and technical characteristics of various scenarios are discussed and summarized.
作者
蔡振浩
宋勇
CAI Zhen-hao;SONG Yong(Intelligent Manufacturing Advanced Technology Institute,Shanghai SKEQI Automation Equipment Co.,Ltd.,Shanghai 201206,China)
出处
《通信技术》
2020年第5期1092-1096,共5页
Communications Technology
基金
上海市人工智能创新发展专项基金(No.2019-RGZN-01062)。
关键词
毫米波通信
大规模天线
波束成型
大尺度衰落
频谱效率
mmWave communication
massive antenna array
beamforming
large scale fading
spectral efficiency
