自适应传输技术在MIMO-OFDM系统中的应用  

Research on Adaptive Transmission Technique for MIMO-OFDM Systems

作　　者：袁琳[1] 

机构地区：[1]兰州交通大学电子与信息工程学院,兰州730070

出　　处：《信息通信》2008年第6期54-56,64,共4页Information & Communications

摘　　要：MIMO-OFDM技术具有频谱利用率高、抗频率选择性衰落能力强的优点,适合高速数据传输,自适应传输技术可以根据信道质量的好坏自适应调整传输方式,提高传输效率。本文介绍了OFDM和MIMO-OFDM技术,并论述了自适应传输技术以及各种自适应传输算法。As a transmission technique, MIMO-OFDM is superior in utilizing frequency resources adequately, counteracting frequency selective dwindling of signals, so it is applied in transmitting data in a high speed. The adaptive transmission technique has such a virtue as choosing the transmission method adaptively according to the status of the channels, so as to improve the transmission efficiency. In this paper, the conception of OFDM and MIMO-OFDM are discussed, and the technology of self-adaptive transmission and kinds of algorithms are introduced and compared in detail.

关 键 词：OFDM MIMO--OFDM 自适应传输 

分 类 号：TN929.5[电子电信—通信与信息系统]