| 多用户多径环境下DOA估计算法研究 |
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| 引用本文： | 周志敏,漆兰芬. 多用户多径环境下DOA估计算法研究[J]. 华中科技大学学报(自然科学版), 2002, 30(4): 58-60 |
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| 作者姓名： | 周志敏 漆兰芬 |
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| 作者单位： | 华中科技大学电子与信息工程系 |
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| 基金项目： | 国家自然科学基金资助项目 (6 0 1710 13)，华为科技基金资助项目 |
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| 摘 要： | 针对移动通信中多用户多径环境下的DOA估计问题，提出利用CARE算法求出各用户的空间循征矢量，进而利用基于对称阵列的改进MUSIC算法求出各用户对应多径信号DOA的联合算法，仿真结果表明：结合CARE算法，基于对称阵列的改进MUSIC算法能自动对多用户的DOA进行分组，并能对每个用户的多径相干信号进行DOA估计，不需要做平滑计算，不需要判断多径信号的个数，不增加计算量。
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| 关 键 词： | 智能天线 MUSIC算法 CARE算法 多用户多径环境 移动通信 DOA估计算法 |
| 文章编号： | 1671-4512(2002)04-0058-03 |
| 修稿时间： | 2001-10-22 |
An estimation algorithm for DOA under the condition of multi-user and multi-path signals |
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| Zhou Zhimin Qi Lanfen Doctoral Candidate, Dept. of Electronics , Information Eng.,Huazhong Univ. of Sci. , Tech.,Wuhan ,China.. An estimation algorithm for DOA under the condition of multi-user and multi-path signals[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 2002, 30(4): 58-60 |
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| Authors: | Zhou Zhimin Qi Lanfen Doctoral Candidate Dept. of Electronics & Information Eng. Huazhong Univ. of Sci. & Tech. Wuhan China. |
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| Affiliation: | Zhou Zhimin Qi Lanfen Doctoral Candidate, Dept. of Electronics & Information Eng.,Huazhong Univ. of Sci. & Tech.,Wuhan 430074,China. |
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| Abstract: | To estimate the DOA under the condition of multi user and multi path signals in the mobile communication systems, this paper presents a combined algorithm, which estimates the spatial signature (SS) of every user by CARE algorithm and calculates DOA of the multi path signals of each user with the improved MUSIC algorithm for symmetric arrays. The simulation study shows: combined with CARE algorithm, the improved MUSIC algorithm based on the symmetric arrays can classify the DOA of users automatically and estimate the DOA of the coherent multi path signals of each user. The spatial smoothing need not computing, the number of multi path signals need not judging and the amount of computation is not increased. |
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| Keywords: | smart antenna MUSIC algorithm CARE algorithm |
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