| 基于正交小波变换的奇对称误差函数盲均衡算法 |
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| 引用本文： | 纪娟娟,郭业才,杨超.基于正交小波变换的奇对称误差函数盲均衡算法[J].系统仿真学报,2010(10). |
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| 作者姓名： | 纪娟娟 郭业才 杨超 |
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| 作者单位： | 1. 安徽理工大学电气与信息工程学院,淮南232001;
2. 安徽理工大学电气与信息工程学院，淮南232001；2．南京信息工程大学电子与信息工程学院，南京210044 |
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| 基金项目： | 全国优秀博士论文作者专项资助(200753); 江苏省高等学校自然科学基金(08KJB510010); 江苏省六大人才高峰资助项目(2008026); 江苏省自然科学基金(BK2009410); 安徽省高等学校自然科学基金(KJ2010A096) |
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| 摘 要： | 针对常数模（Constant Modulus Algorithm,CMA）收敛速度慢、均方误差大的缺点,在分析基于正交小波变换的盲均衡器结构及奇对称误差函数的特性基础上,提出了一种基于正交小波变换的奇对称误差函数盲均衡算法（WT-OSE,orthogonal Wavelet Transform based Odd Symmetry Error function blind equalization algorithm）,该算法通过归一化正交小波变换来加速收敛速度,用误差函数的奇对称性以减小均方误差,利用变步长来进一步加快收敛速度。水声信道的仿真结果表明,该算法具有较快的收敛速度和较小的均方误差。Abstract：Aiming at the slow convergence rate and big mean square error of Constant Modulus Algorithm（CMA）,orthogonal wavelet transform based odd symmetry error function blind equalization algorithm blind equalization algorithm was proposed,on the basis of orthogonal wavelet transform based blind equalizer structure and characteristics of odd symmetry error function,the convergence rate of the proposed algorithm could be improved by normalized orthogonal wavelet transform and its mean square error could be reduced by odd symmetry of error function and the convergence rate was further improved via using the performance of variable step size.Simulation tests with underwater acoustic channel indicate that the proposed algorithm has not only faster convergence rate but also less mean square error.
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| 关 键 词： | 盲均衡 正交小波变换 奇对称误差函数 水声信道 |
Odd Symmetry Error function Blind Equalization Algorithm Based on Orthogonal Wavelet Transform |
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| JI Juan-juan,GUO Ye-cai,YANG Chao.Odd Symmetry Error function Blind Equalization Algorithm Based on Orthogonal Wavelet Transform[J].Journal of System Simulation,2010(10). |
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| Authors: | JI Juan-juan GUO Ye-cai YANG Chao |
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| Institution: | JI Juan-juan1,GUO Ye-cai1,2,YANG Chao1(1.Department of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan 232001,China,2.Department of Electronic and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China) |
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| Abstract: | Aiming at the slow convergence rate and big mean square error of Constant Modulus Algorithm（CMA）,orthogonal wavelet transform based odd symmetry error function blind equalization algorithm blind equalization algorithm was proposed,on the basis of orthogonal wavelet transform based blind equalizer structure and characteristics of odd symmetry error function,the convergence rate of the proposed algorithm could be improved by normalized orthogonal wavelet transform and its mean square error could be reduced by odd symmetry of error function and the convergence rate was further improved via using the performance of variable step size.Simulation tests with underwater acoustic channel indicate that the proposed algorithm has not only faster convergence rate but also less mean square error. |
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| Keywords: | blind equalization orthogonal wavelet transform odd symmetry error function underwater acoustic channel |
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