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基于ULV更新算法的DS-CDMA自适应检测研究
引用本文:刘建民,赵健.基于ULV更新算法的DS-CDMA自适应检测研究[J].计算机工程与应用,2006,42(2):39-41,89.
作者姓名:刘建民  赵健
作者单位:1. 西北工业大学航海学院,西安,710072
2. 西北大学信息科学与技术学院,西安,710069
摘    要:通过研究多径信号码空间和数据矢量空间,采用噪声子空间技术进行异步DS-CDMA系统期望信号矢量估计,以利于把盲线性滤波优化技术应用于稳健的干扰抑制。提出一种修改的ULV更新算法进行噪声子空间跟踪,该算法不需要相关矩阵的秩估计,直接估计噪声子空间,不进行信号子空间跟踪。仿真结果验证了该文算法的有效性。

关 键 词:DS-CDMA  盲自适应滤波  多用户检测  子空间跟踪
文章编号:1002-8331-(2006)02-0039-03

Adaptive Detection for Asynchronous DS-CDMA Based on ULV Updating Algorithm
Liu Jianmin,Zhao Jian.Adaptive Detection for Asynchronous DS-CDMA Based on ULV Updating Algorithm[J].Computer Engineering and Applications,2006,42(2):39-41,89.
Authors:Liu Jianmin  Zhao Jian
Abstract:In this paper,by investigating the code space of the multipath signals and the data vector space,the noisesubspace-based approach is used to estimate the desired signal vector for asynchronous DS-CDMA.The method exploits not only the characteristics of multipath propagation but also the characteristics of timing-offsets which may occur in the receiver,to facilitate the application of a blind linear filter-optimization technique to robust interference suppression. Furthermore,a modified ULV updating algorithm is applied to performing noise subspaee tracking.The algorithm does not require rank estimation of the correlation matrix,and estimate directly the noise subspaee without tracking the signal subspace.Simulation results are listed to show the effectiveness of the proposed algorithms.
Keywords:DS-CDMA
本文献已被 CNKI 维普 万方数据 等数据库收录!
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