| 基于离散余弦变换的MMSE信道估计算法 |
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| 引用本文： | 李晓柏,杨瑞娟,程伟,邵占智.基于离散余弦变换的MMSE信道估计算法[J].空军雷达学院学报,2009,23(1):59-61. |
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| 作者姓名： | 李晓柏 杨瑞娟 程伟 邵占智 |
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| 作者单位： | 1. 空军雷达学院研究生管理大队,武汉,430019
2. 空军雷达学院预警监视情报系,武汉,430019 |
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| 摘 要： | 为了弥补在基于OFDM系统的最小均方误差（MMSE）信道估计方法中采用奇异值分解（SVD）使得算法的性能下降，提出一种利用DCT的能量压缩特性消除信道残留噪声的MMSE信道估计算法．计算机仿真结果表明，该算法的精度有了较大的改善．
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| 关 键 词： | 移动通信 多径衰落 离散余弦变换 误符号率 |
An Algorithm of MMSE Channel Estimation Based on DCT |
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| LI Xiao-bai,YANG Rui-juan,CHEN Wei,SHAO Zhan-zhi.An Algorithm of MMSE Channel Estimation Based on DCT[J].Journal of Air Force Radar Academy,2009,23(1):59-61. |
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| Authors: | LI Xiao-bai YANG Rui-juan CHEN Wei SHAO Zhan-zhi |
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| Affiliation: | LI Xiao-bai, YANG Rui-juan, CHEN Wei, SHAO Zhan-zhi ( 1. Department of Graduate Management, AFRA,Wuhan 430019, China 2. Department of Early Warning Surveillance Intelligence, AFRA, Wuhan 430019, China) |
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| Abstract: | For compensating the worsening of the algorithm performance using SVD method for MMSE channel estimation in an OFDM system, an improved MMSE channel estimation method was proposed that the channel residual noise could be eliminated by using the energy compression characteristics of discrete cosine transform. The simulation results show that the precision of the proposed algorithm is improved greatly. |
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| Keywords: | mobile communication multi-path fading discrete cosine transform （DCT） SER |
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