| 高精度OFDM信道估计算法 |
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| 引用本文： | 汪晋宽,王旭,许鹏.高精度OFDM信道估计算法[J].东北大学学报(自然科学版),2011,32(1):32-35. |
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| 作者姓名： | 汪晋宽 王旭 许鹏 |
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| 作者单位： | 东北大学信息科学与工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(60874108,60904035) |
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| 摘 要： | 为了降低OFDM系统经典最小均方误差(MMSE)信道估计算法的误码率(BER),提出了经带阻滤波的MMSE信道估计算法.该算法首先采用MMSE得到初始的信道估计值,再利用离散傅里叶变换的特性,将噪声和信道频率响应信息分离开来,最后通过带阻滤波器对估计算法进行滤波,进而提高系统的BER性能.仿真结果表明,在增加少量计算复...
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| 关 键 词： | 正交频分复用 信道估计 最小均方误差 带阻滤波 误码率 |
High-Accuracy OFDM Channel Estimation Algorithm for OFDM Systems |
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| WANG Jin-kuan,WANG Xu,XU Peng.High-Accuracy OFDM Channel Estimation Algorithm for OFDM Systems[J].Journal of Northeastern University(Natural Science),2011,32(1):32-35. |
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| Authors: | WANG Jin-kuan WANG Xu XU Peng |
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| Institution: | WANG Jin-kuan,WANG Xu,XU Peng(School of Information Science & Engineering,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | To decrease the BER(bit error ratio) of MMSE(minimum mean square error) channel estimation algorithm for OFDM systems,an improved channel estimation algorithm by using band-stop filter is proposed.In the proposed algorithm,the initial estimate value of channel is given by MMSE.Then,the noise is separated from channel frequency response by use of the characteristics of DFT(discrete Fourier transform).Finally,the channel estimation algorithm is filtered by the band-stop filter so as to improve the system accu... |
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| Keywords: | OFDM channel estimation MMSE(minimum mean square error) band-stop filter BER(bit error ratio) |
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