| CDMA系统基于无参似然率准则的盲多用户检测 |
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| 引用本文： | 韦琦,张向阳,苏晓宇.CDMA系统基于无参似然率准则的盲多用户检测[J].哈尔滨理工大学学报,2009,14(4):50-53. |
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| 作者姓名： | 韦琦 张向阳 苏晓宇 |
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| 作者单位： | 哈尔滨理工大学,电气与电子工程学院,黑龙江,哈尔滨,150040 |
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| 摘 要： | 提出了一种应用于DS—CDMA通信系统中的干扰抑制盲算法，该算法在经典ICA算法中增加了无参似然率（nonparametric likelihood ratio，NLR）准则，使分离出的数据的误码率减小，系统性能明显提高．仿真结果表明这种新算法与另外两种未采用NLR准则的算法相比具有更好的抑制干扰的能力，降低了系统对信噪比的要求．
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| 关 键 词： | 盲多用户检测 独立分量分析 无参似然率 |
Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion |
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| WEI Qi,ZHANG Xiang-yang,SU Xiao-yu.Blind Detection in CDMA Systems Based Nonparametric Likelihood Ratio Criterion[J].Journal of Harbin University of Science and Technology,2009,14(4):50-53. |
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| Authors: | WEI Qi ZHANG Xiang-yang SU Xiao-yu |
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| Affiliation: | ( School of Electric and Electronic Engineering, Harbin University of Science and Technology, Harbin 150040, China) |
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| Abstract: | This paper presents a blind interference suppression algorithm used in DS - CDMA system. The algorithm is a nonparametric likelihood ratio （NLR） criterion added to the classic ICA algorithm to decrease the data error rate and improve system performance markedly. The simulation results show that this new algorithm provides better interference suppression and reduce the requirements of the SNR than the other two methods which not use NLR criterion. |
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| Keywords: | blind multiuser detection independent component analysis nonparametric likelihood ratio |
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