| 空间色噪声CDMA系统的一种基于累积量DOA估计算法 |
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| 引用本文： | 杨维,程时昕.空间色噪声CDMA系统的一种基于累积量DOA估计算法[J].应用科学学报,2003,21(2):199-204. |
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| 作者姓名： | 杨维 程时昕 |
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| 作者单位： | 1. 北方交通大学电子学院,北京,100044
2. 东南大学移动通信国家重点实验室,江苏,南京,210096 |
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| 基金项目： | Project Supported by the State Key Laboratory of Mobile Communications Research,Southeast University(No.105) |
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| 摘 要： | 传统的DOA估计一般是假设噪声为白高斯的二阶谱估计算法．针对更接近于实际情况的空间色噪声，提出了一种基于累积量MUSIC算法的同步CDMA系统解相干DOA估计算法．该算法不仅能消除多径干扰并且与二阶MUSIC算法相比能更有效抑制空间色噪声，提高估计的准确性．
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| 关 键 词： | CDMA系统 码分多址 空间色噪声 累积量 DOA估计 MUSIC算法 移动通信系统 |
A Cumulant-Based DOA Estimation Algorithm for CDMA System in Spatial Colored Noise |
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| Abstract.A Cumulant-Based DOA Estimation Algorithm for CDMA System in Spatial Colored Noise[J].Journal of Applied Sciences,2003,21(2):199-204. |
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| Authors: | Abstract |
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| Abstract: | The conventional direction of arrival (DOA) detection algorithm is generally based on the second-order spectrum estimation while assuming that the noise is additive white Gaussian noise (AWGN). Concentrating on spatial colored noise of unknown spectrum quality, which is more realistic in any scenario , a novel high-order cumulant MUSIC DOA estimation algorithm for synchronous CDMA system with decorrelator has been proposed. The proposed algorithm not only has the advantages that the DOA of multipath signals can be estimated independently by eliminating all the other resolvable multipath signal interference but while on spatial colored noise case the proposed algorithm estimates DOAs of the decoupled multipath signal more effectively and accurately than the conventional second-order MUSIC algorithm. |
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| Keywords: | CDMA DOA estimation cumulant MUSIC algorithm |
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