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异步DS-CDMA系统中基于矩阵点除算法的DOA估计 被引量：1

DOA Estimation Based on Element-Wise Division Algorithm for Asynchronous DS-CDMA Systems
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摘要 针对异步DS-CDMA系统中的多用户环境,本文提出了一种低复杂度的DOA估计算法——矩阵点除算法。该算法通过对感兴趣信息的逐次分离,实现了DOA的逐路径估计。算法具有两方面显著优势:(1)克服了传统的DOA估计算法在路径总数大于天线阵元数时不能工作这一缺陷:(2)避免了计算复杂的特征值分解运算,大大降低了算法复杂度。仿真实验验证了算法的有效性。 In this paper, a low complexity DOA estimation algorithm, called element-wise division algorithm, is presented for asynchronous DS-CDMA systems under multi-user environment. Based on the separation of signals of interested serially, DO As of each path are resolved accordingly. This algorithm has two primary advantages: (1) it overcomes the limitation that the number of all the paths exceeds that of antenna array's elements, which makes the conventional DOA algorithms invalid. (2) there's no need to calculate eigenvalue decomposition, hence, the complexity is decreased dramatically. Simulation results confirm the effectiveness of the algorithm.
作者 王维新 吴镇扬 彭岳星 刘陈
机构地区 东南大学无线电工程系
出处 《信号处理》 CSCD 2004年第5期470-474,共5页 Journal of Signal Processing
基金 国家863计划(No.2001AA123015)资助项目
关键词 DS-CDMA系统 DOA估计算法 异步 低复杂度 阵元 特征值分解 天线阵 算法复杂度 多用户环境 仿真实验 DOA estimation smart antenna space-time processing
分类号 TP391.41 [自动化与计算机技术—计算机应用技术] TN911 [电子电信—通信与信息系统]
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参考文献11

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同被引文献10

  • 1Mati Wax and Amir Leshem, "Joint estimation of time delays and direction of arrival of multiple reflections of a known signal,"IEEE trans. Signal Proc., vol.45, no.10,pp.2477-2484, Oct. 1997.
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  • 10王维新,吴镇扬,彭岳星,刘陈.一种适用于异步DS-CDMA系统的低复杂度DOA估计算法[J].电子与信息学报,2004,26(7):1030-1037. 被引量：1

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信号处理
2004年 第5期

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