MIMO-OFDM通信系统研究  

Research of MIMO-OFDM Communication System

作　　者：张建华[1] 韩琳[1] 

机构地区：[1]河南工业大学信息科学与工程学院,河南郑州450001

出　　处：《科技广场》2009年第1期43-44,共2页Science Mosaic

摘　　要：采用多入多出(MIMO)技术可以提高信道容量和信道可靠性,降低误码率。正交频分复用(OFDM)是一种特殊的多载波传输方案,各子载波在整个符号周期上正交,各子载波信号子频谱可以互相重叠,提高频带利用率。MIMO-OFDM技术是OFDM与MIMO技术结合形成的一种新技术,该技术是在OFDM传输系统中采用阵列天线实现空间分集,提高了信号质量。本文全面介绍了MIMO技术和OFDM技术及两者的结合,分析实现MIMO-OFDM技术的框架。MIMo technique is used to improve channel capacity and link reliability as well as to reduce bit error rate. Orthogonal frequency division multiplexing （OFDM） is a special kind of multi-carrier trans- mission scheme. In OFDM system,high spectrum efficiency can be obtained because sub-carriers are orthogonal during the whole symbol period and their spectra overlap.MIMO-OFDM is a new technique that combines MIMO with OFDM.It uses antenna arrays to realize space diversty and to improve the quality of signals.This paper describes the technique of MIMO,OFDM and MIMO-OFDM,analyzes the framework of MIMO-OFDM technique.

关 键 词：多入多出:正交频分复用:频谱利用率:频率选择性衰落 

分 类 号：TN919.6[电子电信—通信与信息系统]