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应用科学学报 ›› 2004, Vol. 22 ›› Issue (2): 149-152.

• 论文 • 上一篇    下一篇

DS-CDMA系统中基于矩阵点除算法的DOA估计

王维新, 吴镇扬, 彭岳星, 刘陈   

  1. 东南大学无线电工程系 江苏南京 210096
  • 收稿日期:2002-12-09 修回日期:2003-07-18 出版日期:2004-06-30 发布日期:2004-06-30
  • 作者简介:王维新(1975-),男,辽宁义县人,博士生;吴镇扬(1949-),男,江苏兴化人,教授,博导.
  • 基金资助:
    国家863计划资助项目(2001AA123015)

Element-Wise Division Algorithm for DOA Estimation in DS-CDMA Systems

WANG Wei-xin, WU Zhen-yang, PENG Yue-xing, LIU Chen   

  1. Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:2002-12-09 Revised:2003-07-18 Online:2004-06-30 Published:2004-06-30

PDF

105

被引次数

7

摘要： 针对DS-CDMA系统的多用户环境,提出了一种有效的DOA估计算法.该算法首先分离出每一条路径上的信息,然后通过矩阵点除运算,高效地实现了DOA估计.算法避免了特征值分解这类复杂运算,同时也不需要估计信源个数并自动实现了路径配对,是一种简便易行的高精度算法.仿真实验验证了算法的有效性.

关键词: 波达方向, 空时信号处理, 智能天线

Abstract: In this paper, an effective DOA estimation algorithm is presented for DS-CDMA systems under multi-user environment. First, the information associated with each path is extracted. Then, DOA's are efficiently resolved using the proposed element-wise division operations. The algorithm requires neither complex eigenvalue decomposition operations nor source number estimation. In addition, paths pairing are matched automatically. Generally speaking, the proposed algorithm is high in resolution and easy to implement in practice. Simulations confirm the effectiveness of the algorithm.

Key words: smart antenna, space-time processing, direction of arrival (DOA)

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