| 频偏与高速移动场景中的协作OFDM系统性能分析 |
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| 引用本文： | 陈东华.频偏与高速移动场景中的协作OFDM系统性能分析[J].华侨大学学报(自然科学版),2014,0(3):263-267. |
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| 作者姓名： | 陈东华 |
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| 作者单位： | 华侨大学 信息科学与工程学院, 福建 厦门 361021 |
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| 基金项目： | 福建省自然科学基金资助项目(2012J05119);广西无线宽带通信与信号处理重点实验室2011年度主任基金项目(21104);华侨大学高层次人才科研启动项目(12BS230);中央高校基本科研业务费,国务院侨办科研基金资助项目(11QZR02) |
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| 摘 要： | 理论分析频偏与信道时变引起的子载波间干扰(ICI),以及其对协作正交频分复用(OFDM)系统接收性能的影响,并通过数值仿真得到ICI的分布及系统误码率.实验结果表明:一方面频偏与信道时变共同作用下的ICI更加严重,并由此导致系统性能的严重恶化;另一方面,频偏与信道时变作用下的ICI随子载波间隔的增加而减小.说明低复杂度ICI均衡是可行的.
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| 关 键 词： | 协作通信 正交频分复用 载波频偏 时变信道 |
Performance Analysis of Cooperative OFDM Systems in Presence of Carrier Frequency Offset and in High Mobility Environment |
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| CHEN Dong-hua.Performance Analysis of Cooperative OFDM Systems in Presence of Carrier Frequency Offset and in High Mobility Environment[J].Journal of Huaqiao University(Natural Science),2014,0(3):263-267. |
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| Authors: | CHEN Dong-hua |
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| Institution: | College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China |
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| Abstract: | Intercarrier Interference(ICI)caused by frequency offset and channel time variation and the resulting impactions on the receiver performance of the cooperative orthogonal frequency division multiplexing(OFDM)system are analyzed theoretically, and the ICI distributions along with the system bit error rate are also obtained by numerical simulations. The simulation results show that: on one hand, the ICI under both frequency offset and channel time variation becomes more severe, and accordingly causes the system performance degraded severely, and on the other hand, the ICI under both frequency offset and channel time variation decreases with the increasing of subcarrier intervals, which indicate that the low complexity ICI equalization is possible. |
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| Keywords: | cooperative communications orthogonal frequency division multiplexing carrier frequency offset time varying channels |
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