| 一种用于多径CDMA信道的盲多用户检测器 |
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| 引用本文： | 周健,乐光新. 一种用于多径CDMA信道的盲多用户检测器[J]. 北京邮电大学学报, 2000, 23(1): 51-55 |
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| 作者姓名： | 周健 乐光新 |
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| 作者单位： | 北京邮电大学电信工程学院, 北京 100876 |
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| 基金项目： | 国家科学自然基金资助项目(69872008) |
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| 摘 要： | 提出了一种基于受限平均输出能量(CMOE)准则的用于多径CDMA信道的盲多用户检测器.与以前提出的盲多用户检测器相比, 它充分利用了两个子空间的特性和结构: 所需用户的扩频码子空间;由接收数据的协方差矩阵估计的信号子空间.仿真结果表明, 该盲多用户检测器具有很强的抗远近效应的能力, 避免了CMOE检测器存在的由于信号表示波形不匹配造成的性能下降问题, 在较高信噪比条件下, 性能大大优于已提出的其它多用户检测器.
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| 关 键 词： | 码分多址联接 受限平均输出能量 盲多用户检测器 |
| 收稿时间： | 1999-09-21 |
Blind Adaptive Multiuser Detection in Multipath Code Division Multiple Access Channels |
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| ZHOU Jian,YUE Guang xin. Blind Adaptive Multiuser Detection in Multipath Code Division Multiple Access Channels[J]. Journal of Beijing University of Posts and Telecommunications, 2000, 23(1): 51-55 |
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| Authors: | ZHOU Jian YUE Guang xin |
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| Affiliation: | School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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| Abstract: | We propose a blind adaptive multiuser detection in multipath CDMA channels based on CMOE criteria. Compared with other multiuser detection, this one take advantage of the structure and character of two subspace : (1) the subspace structure associated with the code of the desired user; (2)the estimated “signal subspace” of the covariance matrix for the observed signals. Simulations state this detection has strong ability against near-far,avoid significant reduction in performance when signature mismatch exists and good performance in the higher SNR conditions. |
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| Keywords: | code division multiple access constraint minimum output energy blind multiuser detection |
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