Adaptive blind equalizer based on least square support vector machine  

Adaptive blind equalizer based on least square support vector machine

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作  者:毛忠阳 王红星 李军 赵志勇 宋恒 

机构地区:[1]Department of Electronic and Information Engineering,Naval Aeronautical andAstronautical University

出  处:《Journal of Beijing Institute of Technology》2011年第4期546-551,共6页北京理工大学学报(英文版)

基  金:Supported by the National Natural Science Foundation of China(60772056);the Postdoctoral Science Foundation of China(20070421094)

摘  要:An adaptive blind support vector machine equalizer(ABSVME) is presented in this paper.The method is based upon least square support vector machine(LSSVM),and stems from signal feature reconstruction idea.By oversampling the output of a LSSVM equalizer and exploiting a reasonable decorrelation cost function design,the method achieves fine online channel tracing with Kumar express algorithm and static iterative learning algorithm incorporated.The method is verified through simulation and compared with other nonlinear equalizers.The results show that it provides excellent performance in nonlinear equalization and time-varying channel tracing.Although a constant module equalization algorithm requires that the signal has characteristic of constant module,this method has no such requirement.An adaptive blind support vector machine equalizer(ABSVME) is presented in this paper.The method is based upon least square support vector machine(LSSVM),and stems from signal feature reconstruction idea.By oversampling the output of a LSSVM equalizer and exploiting a reasonable decorrelation cost function design,the method achieves fine online channel tracing with Kumar express algorithm and static iterative learning algorithm incorporated.The method is verified through simulation and compared with other nonlinear equalizers.The results show that it provides excellent performance in nonlinear equalization and time-varying channel tracing.Although a constant module equalization algorithm requires that the signal has characteristic of constant module,this method has no such requirement.

关 键 词:support vector machine(SVM) blind equalizer ADAPTIVE feature reconstruction 

分 类 号:TN911.7[电子电信—通信与信息系统] O241.5[电子电信—信息与通信工程]

 

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