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基于子空间跟踪的空时多用户检测 被引量：1

Space-Time Multiuser Detection Based on Subspace Tracking
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摘要 采用改进的PASTd子空间跟踪算法实现信号子空间的自适应跟踪。提出一种基于改进的PASTd子空间跟踪的空时多用户检测算法,实现了在不增加任何结构和复杂度的情况下将方向向量随子空间跟踪算法一起求解。使用阵列天线充分利用了不同空间位置带来的空域特征,有效地提高了用户的抗多址干扰能力,成为扩展系统容量的有效途径。仿真实验验证了该算法的优越性。 The improved projection approximation subspace tracking with deflation （PASTd） algorithm is used to estimate the signal subspace adaptively, and a space-time muhiuser detection algorithm based on the improved PASTd subspace tracking is proposed. By the subspace tracking approach, the signal steering vector can be resolved. The proposed approach exploits the spatial characteristics of users, increases the ability against the multiple access interference, and extends the system capacity. Simulation results demonstrate the superiority of the proposed algorithm.
作者 孟艳 汪晋宽 朱俊 宋昕
机构地区 东北大学信息科学与工程学院
出处 《数据采集与处理》 CSCD 北大核心 2008年第6期702-705,共4页 Journal of Data Acquisition and Processing
基金 博士学科点专项科研基金(20050145019)资助项目
关键词 CDMA 多用户检测 阵列天线 紧缩近似投影子空间跟踪 子空间跟踪 code division multiple access multiuser detection array antennas projection approximation subspace tracking with deflation （PASTd） subspace tracking
分类号 TN911.7 [电子电信—通信与信息系统]
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参考文献10

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共引文献6

同被引文献13

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数据采集与处理
2008年 第6期

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