| 一种基于统计特性变换的改进盲信道估计 |
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| 引用本文： | 金炜,赵乐军.一种基于统计特性变换的改进盲信道估计[J].计算机仿真,2008,25(8). |
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| 作者姓名： | 金炜 赵乐军 |
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| 作者单位： | 华东理工大学信息科学与工程学院,上海,200237 |
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| 摘 要： | 首先从接收信号的过采样出发,总结了SIMO信道的堆栈系统模型.针对输入信号为平稳且有已知自相关函数时的信道估计与均衡问题,通过统计特性变换的方法导出了变换阵的闭式解,最后给出一种适用于平稳信源的改进盲信道估计与均衡算法,并对算法进行仿真,分析其辨识误差、收敛性能和均衡效果.结果表明算法在输入信号为平稳非独立同分布时仍能对信道进行辨识且具有较高的精度,算法的收敛速度快并能达到理想的均衡效果.
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| 关 键 词： | 统计特性 等效变换 盲辨识 盲均衡 算法 |
An Improved Approach for Blind Channel Estimation Based on Statistical Property Transform |
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| JIN Wei,ZHAO Le-jun.An Improved Approach for Blind Channel Estimation Based on Statistical Property Transform[J].Computer Simulation,2008,25(8). |
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| Authors: | JIN Wei ZHAO Le-jun |
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| Affiliation: | JIN Wei,ZHAO Le-jun(School of Information Science , Engineering,East China University of Science , Technology,Shanghai 200237,China) |
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| Abstract: | Stacked system model of SIMO channel is introduced by considering channel output over sampling.The concept of statistical property transform is discussed according to the situation in which channel input is stationary with a priori known autocorrelation function.In this paper,closed-form solution of equivalent transformation matrix is concluded and an algorithm for blind identification suitable to stationary source is proposed.Through simulations,the algorithm's performance of estimation error and convergen... |
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| Keywords: | Statistical property Equivalent transform Blind identification Blind equalization Algorithm |
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