| 一种基于非参数似然比准则的ICA盲检测算法 |
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| 引用本文： | 杨家轩,史国友,李建民,贾传荧.一种基于非参数似然比准则的ICA盲检测算法[J].大连海事大学学报(自然科学版),2009,35(2). |
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| 作者姓名： | 杨家轩 史国友 李建民 贾传荧 |
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| 作者单位： | 大连海事大学,航海学院,辽宁,大连,116026 |
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| 基金项目： | 交通部"十一五"发展研究项目 |
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| 摘 要： | 为抑制CDMA系统中的多址干扰,提出一种基于非参数似然比准则的ICA盲检测算法.该算法直接由观测信号样本出发,使用核函数估计分离信号的概率密度函数,并结合梯度下降法和似然比准则进行目标用户的信号检测.计算机仿真及与其他算法的比较表明,该算法抑制多址干扰的能力介于FastICA检测和最小均方误差(MMSE)检测之间.
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| 关 键 词： | 盲多用户检测 独立分量分析(ICA) 非参数似然比 |
ICA blind detection algorithm based on nonparametric likelihood ratio criterion |
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| YANG Jia-xuan,SHI Guo-you,LI Jian-min,JIA Chuan-ying.ICA blind detection algorithm based on nonparametric likelihood ratio criterion[J].Journal of Dalian Maritime University,2009,35(2). |
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| Authors: | YANG Jia-xuan SHI Guo-you LI Jian-min JIA Chuan-ying |
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| Institution: | YANG Jia-xuan,SHI Guo-you,LI Jian-min,JIA Chuan-ying(College of Navigation,Dalian Maritime University,Dalian 116026,China) |
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| Abstract: | To suppress multiuser access interference in CDMA system,an independent component analysis(ICA) blind detection algorithm based on nonparametric likelihood ratio criterion was developed.The proposed algorithm is completely blind to the sources and has the ability to separate the mixed sources simultaneously.The signal of desired user is detected by using kernel function to estimate probability density function and combining gradient descent algorithm with likelihood ratio criterion.Computer simulation and c... |
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| Keywords: | blind multiuser detection independent component analysis(ICA) nonparametric likelihood ratio |
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