电子学报 ›› 2006, Vol. 34 ›› Issue (10): 1884-1887.

• 论文 • 上一篇    下一篇

一种基于天线阵列预处理盲多用户检测算法及其对DOA估计误差的鲁棒性研究

傅洪亮1, 酆广增2   

  1. 1. 河南工业大学信息科学与工程学院,河南郑州 450052;2. 南京邮电大学通信工程学院,江苏南京 210003
  • 收稿日期:2004-10-21 修回日期:2006-05-26 出版日期:2006-10-25 发布日期:2006-10-25

A Pre-processing Blind Multiuser Detection Algorithm for Antenna Array System and Its Robustness to DOA Estimation Error

FU Hong-liang1, FENG Guang-zeng2   

  1. 1. Institute of Information Science and Engineering,Henan University of Technology,Zhengzhou,Henan 450052,China;2. Institute of Communication Engineering,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210003,China
  • Received:2004-10-21 Revised:2006-05-26 Online:2006-10-25 Published:2006-10-25

摘要: 本文提出了一种基于天线阵列的预处理判决反馈最小二乘恒模盲多用户检测算法,称为PDF-LSCMA算法.它是对天线阵列接收信号经预处理,采用判决反馈最小二乘恒模算法进行多用户检测,确保了算法收敛于期望信号.文中就预处理中所用到的波达方向估计误差对PDF-LSCMA算法的影响进行了理论分析,给出了波达方向估计的取值范围,并用计算机仿真对这种算法及分析结果进行了验证.

关键词: 天线阵列, 盲多用户检测, 波达方向, 鲁棒性

Abstract: A Pre-processing Least Squares Constant Modulus blind multiuser detection Algorithm based on Decision-Feedback (PDF-LSCMA) in antenna array system is proposed in this paper.It pre-processes the received signals from the antenna array and utilizes the least squares constant modulus algorithm based on decision feedback to detect the DS-CDMA signals.This algorithm can ensure the convergence to the expected signal and enhance the performance of the system.The robustness of PDF-LSCMA to the DOA estimation error and the maximum value of DOA estimation error are also analyzed in this paper.Simulation validates the algorithm and theoretical analysis.

Key words: antenna array, blind multiuser detection, direction of arrival, robustness

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