| OFDM系统中基于DCT的RLS信道估计 |
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| 引用本文： | 杨柳,刘汉奎,郝希准,边刚.OFDM系统中基于DCT的RLS信道估计[J].西华师范大学学报(哲学社会科学版),2009(3):302-305. |
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| 作者姓名： | 杨柳 刘汉奎 郝希准 边刚 |
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| 作者单位： | 西华师范大学物理与电子信息学院; |
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| 基金项目： | 四川省教育厅重点实验室专项基金资助项目(2006ZD026) |
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| 摘 要： | 提出了一种适用于正交频分复用系统信道估计的基于离散余弦变换的RLS方法，并给出了相应的算法．该方法用离散余弦变换代替传统的RLS算法中的DFT变换，能有效降低信道冲激响应泄漏引起的混叠误差．仿真结果表明该方法的性能比传统的RLS算法好，系统误符号率和均方误差都有明显的改善．
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| 关 键 词： | OFDM 信道估计 RLS 离散余弦变换 |
DCT-Based RLS Channel Estimation for OFDM Systems |
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| YANG Liu,LIU Han-kui,HAO Xi-zhun,BIAN Gang.DCT-Based RLS Channel Estimation for OFDM Systems[J].Journal of China West Normal University:Natural Science Edition,2009(3):302-305. |
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| Authors: | YANG Liu LIU Han-kui HAO Xi-zhun BIAN Gang |
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| Institution: | School of Physics and Electronic Information;China West Normal University;Nanchong 637002;China |
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| Abstract: | A DCT-based RLS(DCT-RLS) channel estimation method is proposed for orthogonal frequency division multiplexing(OFDM) system,and the corresponding algorithm is presented.This method can effectively eliminate the aliasing error caused by channel impulse response(CIR) leakage since discrete cosine transform(DCT) is used instead of DFT transform.Simulation results indicate the proposed channel estimation method outperforms the conventional RLS method,and both system symbol error rate(SER) and mean square error(M... |
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| Keywords: | OFDM channel estimation RLS DCT |
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