MIMO无线传输技术综述_李忻.pdf

电磁场与微波 MIMO 1, 3 2 3 李 忻 , 黄绣江, 聂在平 ( 1. 上海交通大学 信息与通信工程博士后科研流动站, 上海200030; 2. 中国电子科技集团公司第23 研究所, 上海200043; 3. 电子科技大学 电子工程学 , 四川成都610054) MIMO , , , , , MIMO : MIMO MIMO MIMO MIMO , MIMO MIMO ; ; ; ; ; TN9112 A An Overview of MIMO Radio Transmission Technology 1, 3 2 3 LI Xin , HUANG Xiu-jiang , NIE Zai- ing ( 1. Inf ormation and Communication Engineering Postdoctoral Workstation, Shanghai Jiaotong University, Shanghai 200030 , China; 2. he 23rd Research Institute of CE C, Shanghai 200043, China; 3. College of EE , University of Electronics and Science echnology of China, Chengdu Sichuan 610054, China ) Abstract Multi le-in ut Multi le-out ut Radio Transmission Technology ( MIMO RTT) , which has the otential to multi ly system ca acity and im rove s ectral efficiency without requiring extra bandwidth and ower, becomes an im ortant technical breakthrough and romises to be one of the key technologies for future wireless communication systems, and hence has attracted broad attention and research interests in recent years. This a er reviews the develo ment history of wireless mobile communications, summarizes the antenna diversity and smart antenna technologies, and ex lores the rinci les of MIMO RTTs and worldwide research trends in this field, including: 1) the evolution of both conventional single antenna systems and smart antenna to multi le-antenna systems, 2) the rinci le of MIMO RTTs, the diversity and s atial multi lexing of MIMO systems, 3) MIMO channel modeling, 4) multi le-antenna design in MIMO systems, and so on. This com rehensive overview of MIMO RTT rovides a solid basis for dee understanding and further research of MIMO te