| OFDM系统抗多径衰落性能及仿真分析 |
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| 引用本文： | 郭攀,李征.OFDM系统抗多径衰落性能及仿真分析[J].计算机仿真,2007,24(11):293-295. |
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| 作者姓名： | 郭攀 李征 |
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| 作者单位： | 东华大学信息科学与技术学院,上海,201620 |
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| 摘 要： | OFDM技术在现代通信技术中的应用越来越广泛,因为该系统具备了多种有利于信号高效传输的优点,特别是其抗多径效应特别突出.作为OFDM系统的显著特点之一,抗多径效应使得系统传输信号的误码率大大降低.为了验证其抗衰落性能,文中分析了多径衰落信道接收信号的特点,建立了多径传播的仿真模型,利用改进的IDFT和DFT的方法,分别在两径及六径瑞利衰落信道进行传输,通过对有无OFDM系统时误差的仿真,说明了OFDM系统具有较强抗多径衰落性能的结论,并提出了一些改善系统性能的方法.
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| 关 键 词： | 正交频分复用 建模 多径衰落 仿真 OFDM 系统 抗多径衰落 性能 仿真分析 Simulation Analysis Carrier Frequency Offset 改善 误差 传输信号 瑞利衰落信道 方法 IDFT 改进 利用 仿真模型 多径传播 接收信号 多径衰落信道 抗衰落 |
| 文章编号： | 1006-9348（2007）011-0293-03 |
| 收稿时间： | 2006-09-23 |
| 修稿时间： | 2006-10-10 |
Effect of Carrier Frequency Offset of OFDM and Its Simulation Analysis |
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| GUO Pan,LI Zheng.Effect of Carrier Frequency Offset of OFDM and Its Simulation Analysis[J].Computer Simulation,2007,24(11):293-295. |
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| Authors: | GUO Pan LI Zheng |
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| Abstract: | OFDM is used in modem communication technology much wider, because it has many advantages which are good for signal transmission, especially antimultipath. In order to testify its antimultipath decline characteristics, this article tells the features of multi - path decline - channel receiving signal, the foundation of multi - path broadcasting simulation model and the simulation of OFDM system by2 - path and 6 - path decline channel. The result is that OFDM system has anti - multi - path decline characteristics by means of advanced IDFY and DTF . In the end, some proposals for improving the performance of the system are offered. |
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| Keywords: | Orthogonal frequency division multiplexing(OFDM) Modeling Multi-path decline Simulation |
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