| 线性约束差分恒模自适应阵列性能分析 |
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| 引用本文： | 陈长征,王华力,甘仲民. 线性约束差分恒模自适应阵列性能分析[J]. 信号处理, 2002, 18(6): 491-494 |
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| 作者姓名： | 陈长征 王华力 甘仲民 |
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| 作者单位： | 1. 中国北方电子设备研究所,北京,100083
2. 解放军理工大学通信工程学院,南京,210007 |
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| 基金项目： | 国家自然科学基金重点资助项目(No.69931040)，国防预研基金(No.00J20.1.1JB3805) |
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| 摘 要： | 线性约束差分恒模算法(LCDCM)能有效克服恒模算法(CMA)中存在的干扰捕获问题,但其性能受迭代步长的影响。本文对所需信号功率、干扰信号功率及所需信号和干扰信号空域相关系数对迭代步长取值和算法收敛速度的影响进行了分析,给出了保证算法收敛的迭代步长的取值范围。最后利用计算机仿真对上述理论结果进行了验证。
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| 关 键 词： | 线性约束 恒模算法 差分恒模 自适应阵列 |
| 修稿时间： | 2001-07-19 |
Performance of Linear Constrained Differential CMA Adaptive Array |
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| Chen Changzheng Wang Huali Gan Zhongmin. Performance of Linear Constrained Differential CMA Adaptive Array[J]. Signal Processing(China), 2002, 18(6): 491-494 |
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| Authors: | Chen Changzheng Wang Huali Gan Zhongmin |
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| Abstract: | Linear constrained differential constant modulus algorithm (LCDCM) is an effective solution to the problem of interfer capture in constant modulus algorithm (CMA). But its performance is suffered from improper selection of iteration step size(ISS). This paper analyzes the influence of many factors on ISS selection and convergence speed, including desired signal power, jamming signal power, and the spatial correlation coefficient between desired and jamming signals. The scope of ISS to ensure the convergence of LCDCM algorithm is also given in this paper. All results are proved by computer simulation. |
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| Keywords: | Linear constraints CMA DCM Adaptive array |
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