采用码匹配滤波器和并行ESPRIT算法对DS-CDMA系统的到达方向进行估计

2010 IEEE International Conference on Wireless Communications, Networking and Information Security Pub Date : 2010-06-25 DOI:10.1109/WCINS.2010.5541936

F. S. Khodadad, S. B. H. Karani, A. Safaei, M. Ata, A. Taheri

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引用次数: 2

摘要

结果表明，基于子空间的DOA估计，阵元数必须大于源数。但是这对于直接顺序码分多址(DS-CDMA)无线系统是不实用的，因为移动用户的数量非常大。为了消除上述限制，提出了一种采用代码匹配滤波器和并行ESPRIT算法的DOA估计器。该算法不像MUSIC方法那样可以搜索所有角度。此外，该算法不需要使用AIC和MDL准则来估计源的数量。仿真结果表明，该方法具有良好的性能。

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The direction of arrival estimation in DS-CDMA systems employing the code-matched filters and parallel ESPRIT algorithms

It was shown that the number of array elements must exceed the number of sources for subspace-based direction-of-arrival (DOA) estimation. But this is not practical for a direct-sequence code-division multiple access (DS-CDMA) wireless system, since the number of mobile users is very large. To remove the aforementioned restriction, a DOA estimator, employing the code-matched filters and parallel ESPRIT algorithms, is proposed. This algorithm does not use to search all angles such as MUSIC method. Besides, it is not necessary to use AIC and MDL criterion to estimate the number of sources in the proposed algorithm. Simulation results illustrates the appropriate performance of the new method.

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2010 IEEE International Conference on Wireless Communications, Networking and Information Security

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