| MIMO-OFDM系统空时编码技术的研究 |
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| 引用本文： | 杨国荣,马荣.MIMO-OFDM系统空时编码技术的研究[J].系统仿真技术,2010,6(4):328-331,341. |
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| 作者姓名： | 杨国荣 马荣 |
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| 作者单位： | 西安铁路职业技术学院,陕西西安710014 |
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| 摘 要： | 结合现代移动通信系统的主要技术,主要针对多输入多输出天线系统（Multiple-Input Multiple-Output,MIMO）、正交频分复用（Orthogonal Frequency Division Multiplexing,OFDM）技术和空时编码技术进行了研究。首先介绍了MIMO技术的发展现状和基本原理;然后介绍了OFDM技术的发展现状和基本原理,并分析该技术的优缺点,分析MIMO-OFDM系统形成的必然性及该系统的关键技术;最后介绍了3种典型空时编码技术,即分层空时码、空时网格码和空时分组码的编译码原理,并利用MATLAB软件对上述内容进行了仿真分析和比较,从而得出MIMO技术、OFDM技术和空时编码技术的结合将是未来移动通信发展的方向。
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| 关 键 词： | 多输出天线系统 正交频分复用 空时编码 分集技术 |
Research of MIMO-OFDM System Space-time Code Technology |
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| YANG Guorong,MA Rong.Research of MIMO-OFDM System Space-time Code Technology[J].System Simulation Technology,2010,6(4):328-331,341. |
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| Authors: | YANG Guorong MA Rong |
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| Affiliation: | (Xi＇an Railway Vocational and Technical Institute,Xi＇an 710014,China) |
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| Abstract: | Multiple-Input Multiple-Output（MIMO）,（Orthogonal Frequency Division Multiplexing）OFDM and space-time coding technologies are studied in this paper.Firstly,the development and basic principles of MIMO system are presented.Secondly,the fundamentals of OFDM system are introduced.We also analyzed advantages and disadvantages,the inevitability,and key technologies of the MIMO-OFDM system.Finally,we discrible encoding and decoding principles of three typical space-time coding technologies,which are layered space-time coding,space-time trellis coding and space-time block coding.In each part,capacity performances or bit error performances are simulated by MATLAB,thus MIMO,OFDM and space-time code technology will be the future development direction of mobile communication. |
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| Keywords: | Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing space-time code diversity technology |
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