摘要
简要介绍了MIMO系统采用的3种技术,即空时编码、空间复用和智能天线,分析了这3种技术的不同应用场景,特别指出密集市区不能使用智能天线,同时指出MIMO覆盖区内信号场强应在-75～-65 dBm之间,不强不弱的信号才能实现数据的高阶调制。
It briefly describes the technologies adopted by MIMO,they are space time coding,spatial multiplexing and smart antenna.It analyzes the different application scenario of them,emphasizes that smart antenna can’t be adopted in dense urban area.It also points out that the field strength of signal in MIMO coverage area is between-75 and-65 dBm,the uniform signal can realize the high order modulation of data.
出处
《邮电设计技术》
2011年第6期1-5,共5页
Designing Techniques of Posts and Telecommunications
关键词
MIMO
空间编码
空间复用
智能天线
均匀场强
高阶调制
MIMO
Spatial coding, Spatial multiplexing
Smart antenna, Uniform field strength
High order modulation
