| MIMO-OFDM系统中的空时/频编码技术 |
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| 引用本文： | 曹蕾,王向阳.MIMO-OFDM系统中的空时/频编码技术[J].电子工程师,2006,32(10):30-32. |
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| 作者姓名： | 曹蕾 王向阳 |
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| 作者单位： | 东南大学移动通信国家重点实验室,江苏省,南京市,210096 |
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| 摘 要： | OFDM(正交频分复用)是一种高效的多载波调制技术,可以用来对抗无线环境中的多径衰落,减少码间干扰。空时编码是一种发射分集技术。文中主要研究基于M IMO(多输入多输出)-OFDM的空时分组码和空频分组码的系统结构以及编译码方法。仿真结果表明,将空时编码技术与M IMO-OFDM技术相结合能有效地抵抗频率选择性随机衰落。
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| 关 键 词： | 多输入多输出系统 正交频分复用技术 空时分组码 空频分组码 |
| 收稿时间： | 2005-11-17 |
| 修稿时间： | 2006-07-10 |
Space-time/Frequency Block Codes in MIMO-OFDM System |
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| CAO Lei,WANG Xiangyang.Space-time/Frequency Block Codes in MIMO-OFDM System[J].Electronic Engineer,2006,32(10):30-32. |
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| Authors: | CAO Lei WANG Xiangyang |
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| Affiliation: | Southeast University, Nanjing 210096, China |
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| Abstract: | Orthogonal frequency-division multiplexing(OFDM) is an efficient multi-carrier modulation technique to overcome the multi-path fading and reduce the ISI in wireless channels.The space-time block code(STBC) is a kind of transmission diversity technique.The constructions of OFDM in a Multiple-Input Multiple-Output(MIMO) system and the space-time block code as well as the space-frequency block code(SFBC) are described.The results of simulation show that space-time block code based on MIMO-OFDM is a highly effective technique against the frequency-selective random fading. |
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| Keywords: | MIMO OFDM STBC SFBC |
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