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  

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

作　　者：傅洪亮[1] 酆广增[2] 

机构地区：[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

出　　处：《电子学报》2006年第10期1884-1887,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60472104);江苏省博士创新基金(No.xm04-32);江苏省教育厅自然科学基金研究项目(04KJB510094)

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.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 fi-om 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.

关 键 词：天线阵列 盲多用户检测 波达方向 鲁棒性 

分 类 号：TN929.5[电子电信—通信与信息系统]