| 一种基于约束最小四阶矩的盲自适应多用户检测方法 |
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| 引用本文： | 郑霖,欧阳缮.一种基于约束最小四阶矩的盲自适应多用户检测方法[J].电子学报,2006,34(9):1631-1634. |
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| 作者姓名： | 郑霖 欧阳缮 |
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| 作者单位： | 西安电子科技大学通信工程学院,陕西西安,710071;桂林电子科技大学通信与信息工程系,广西桂林,541004;桂林电子科技大学通信与信息工程系,广西桂林,541004 |
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| 摘 要： | 基于约束最小四阶矩(Least Mean Fourth,LMF)准则,提出了一种新的高阶统计类型的盲多用户检测方法.通过理论分析和证明,采用此准则的盲多用户检测算法能够收敛于全局最小值,且该极值点符合多用户信号迫零解相关的要求.利用最速下降梯度方法,文中给出了盲自适应LMF接收机形式.该多用户接收机具有运算复杂度低,收敛性能好的特点.在AWGN信道和多用户环境中的仿真结果进一步验证了理论分析的结论.
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| 关 键 词： | 盲多用户检测 最小四阶矩 多址干扰 码分多址 |
| 文章编号： | 0372-2112（2006）09-1631-04 |
| 收稿时间： | 2005-05-20 |
| 修稿时间： | 2005-05-202006-01-28 |
An Adaptive Blind Multiuser Detection Based on Constraint Least Mean Fourth |
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| ZHENG Lin,OUYANG Shan.An Adaptive Blind Multiuser Detection Based on Constraint Least Mean Fourth[J].Acta Electronica Sinica,2006,34(9):1631-1634. |
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| Authors: | ZHENG Lin OUYANG Shan |
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| Affiliation: | 1. School of Telecommunications Engineering,Xidian University,Xi’an,Shanxi 710071,China;2. Guilin University of Electronic Technology,Guilin,Guangxi 541004,China |
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| Abstract: | In CDMA system,a constrained least mean fourth(LMF) criterion is proposed to construct a multi-user detection algorithm.The criterion is proven to have global minima in AWGN environment,and these stationary points can all decorrelate the multiuser signal as expected.The algorithm is a higher-order statistics type approach.Furthermore,an adaptive multiuser detector is obtained by using the method of the steepest descent.The detector has the virtues of global convergence and low computational complexity.In AWGN channel and multiuser environment,the simulation is studied and its results further demonstrate theoretic conclusion. |
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| Keywords: | blind multiuser detection least mean fourth MAI CDMA |
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