| CDMA系统基于四阶累积量的DOA估计 |
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| 引用本文： | 刘文珂,金梁,马晨欣. CDMA系统基于四阶累积量的DOA估计[J]. 无线电通信技术, 2006, 32(1): 27-28 |
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| 作者姓名： | 刘文珂 金梁 马晨欣 |
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| 作者单位： | 国家程控交换中心信息工程学院,河南,郑州,450002 |
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| 基金项目： | 河南杰出人才创新基金项目：基于 CDMA2000-1x 的3G 实用化基站关键技术研究。项目编号：0421000100 |
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| 摘 要： | 提出一种在 CDMA 系统中使用四阶累积量解相干 DOA 估计的算法。该算法不仅能消除多径干扰,且与二阶 MUSIC 算法相比能更有效抑制空间色噪声,提高估计精度,且算法计算量不大,可以实时处理和实现。通过计算机仿真,证明在低信道比色噪声环境下,该方法是有效的。
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| 关 键 词： | CDMA 波达方向(DOA) 累积量 MUSIC 算法 |
| 文章编号： | 1003-3114（2006）01-27-2 |
| 收稿时间： | 2005-04-03 |
| 修稿时间： | 2005-04-03 |
DOA estimation algorithm based on 4-th order cumulant for CDMA system |
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| LIU Wen-ke,JIN liang,MA Chen-xin. DOA estimation algorithm based on 4-th order cumulant for CDMA system[J]. Radio Communications Technology, 2006, 32(1): 27-28 |
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| Authors: | LIU Wen-ke JIN liang MA Chen-xin |
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| Affiliation: | National Digital Switching Center, Zhengzhou Henan 450002,China |
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| Abstract: | DOA estimation algorithm based on 4-th cumulant for CDMA system is proposed.Such an algorithm has the advantages not only that the DOA of multipath signals can be estimated independently by eliminating all the other resolvable multipath signal interference,but also in spatial colored noise case the proposed algorithm can estimate DOAs of the decoupled multipath signal more effectively and accurately than the conventional second-order MUSIC algorithm.In colored noise environment even SNR is very low,simulations proved that the algorithm is effective. |
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| Keywords: | CDMA DOA cumulant MUSIC algorithm |
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