| MIMO-OFDM系统中的时变信道均衡 |
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| 引用本文： | 陈东华.MIMO-OFDM系统中的时变信道均衡[J].华侨大学学报(自然科学版),2012(2):149-152. |
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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 |
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| 基金项目： | 华侨大学科研基金资助项目(07HZR26) |
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| 摘 要： | 为了改善多输入多输出-正交频分复用(MIMO-OFDM)时变信道均衡性能,将最小均方误差排序串行干扰抵消(MMSE-OSIC)均衡算法应用于降维MIMO-OFDM信号模型的符号检测.该方法一方面利用OS-IC来获得时变多普勒分集,另一方面利用降维信号模型来降低均衡复杂度.仿真结果表明:该方法以较低的复杂度代价有效提高了系统性能.
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| 关 键 词： | 多输入多输出 正交频分复用 子载波间干扰 均衡 |
Equalization of Time-Varying Channels for MIMO-OFDM Systems |
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| CHEN Dong-hua.Equalization of Time-Varying Channels for MIMO-OFDM Systems[J].Journal of Huaqiao University(Natural Science),2012(2):149-152. |
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| Authors: | CHEN Dong-hua |
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| Institution: | CHEN Dong-hua(College of Information Science and Engineering,Huaqiao University,Xiamen 361021,China) |
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| Abstract: | In order to improve the equalization performance of multiple input multiple output/orthogonal frequency division multiplexing(MIMO-OFDM) system in time varying channels,the minimum mean squared error equalization scheme with sorted successive interference cancellation(MMSE-OSIC) is used to detect the transmitted symbols relying on a reduced signal model,and as a result,the Doppler diversity caused by channel time variation is thus exploited by the OSIC,and moreover,the computational complexity of this method is reduced by using the reduced signal model.Theoretical analysis and simulation results show that this method improves the performance of MIMO-OFDM system in time-varying channels with a low cost of computational complexity. |
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| Keywords: | multiple input multiple output orthogonal frequency division multiplexing intercarrier interference equalizer |
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