| 一种子空间盲自适应多用户检测技术在天线阵CDMA系统中的应用 |
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| 引用本文： | 王勇,尤肖虎,陈明,程时昕. 一种子空间盲自适应多用户检测技术在天线阵CDMA系统中的应用[J]. 电子学报, 2000, 28(8): 82-84 |
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| 作者姓名： | 王勇 尤肖虎 陈明 程时昕 |
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| 作者单位： | 东南大学无线电系国家移动通信实验室,南京,210096 |
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| 摘 要： | 多用户检测技术是ＤＳ－ＣＤＭＡ中的一项关键技术，而天线阵也是一种减轻多用户干扰的方法，本文将两种技术结合在一起，提出了将子空间方法应用于天线阵多用户检测技术，这种技术可适用于低速移动台在慢衰落信道下的盲检测，仿真结果表明这种算法比单纯作最佳二维Ｒａｋｅ接收要好，和有训练序列的先做ＣＭＯＥ再做最佳合并的性能差不多。
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| 关 键 词： | 多用户检测 子空间 天线阵 CDMA系统 |
A Subspace Approach for Multiuser Detection in Antenna Array CDMA Systems |
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| WANG Yong,YU Xiao-hu,CHEN Ming,CHENG Shi-xing. A Subspace Approach for Multiuser Detection in Antenna Array CDMA Systems[J]. Acta Electronica Sinica, 2000, 28(8): 82-84 |
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| Authors: | WANG Yong YU Xiao-hu CHEN Ming CHENG Shi-xing |
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| Abstract: | Multiple access interference(MAI) is a key problem in direct sequence CDMA (DS CDMA) (Direct sequence code division multiple acess) systems.Both multiuser detection method and antenna array have been introduced to reduce the effect of MAI.In this paper,a blind subspace method is used for multiuser detection in antenna array CDMA system.This method can work under slow fading channels.Simulations show that this method is superior to conventional optimal 2D rake receiver for a single user,and has a similiar performance with a trained CMOE method with optimal combining. |
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| Keywords: | multiuser detection subspace method |
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