| 一种适用于水声信道的双模式盲均衡算法 |
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| 引用本文： | 张艳萍,赵俊渭,李金明.一种适用于水声信道的双模式盲均衡算法[J].电子与信息学报,2005,27(10):1535-1538. |
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| 作者姓名： | 张艳萍 赵俊渭 李金明 |
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| 作者单位： | 1. 西北工业大学声学工程研究所,西安,710072;山西师范大学,临汾,041004
2. 西北工业大学声学工程研究所,西安,710072 |
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| 基金项目： | 中国科学院资助项目;国家部级科研项目 |
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| 摘 要： | 针对常数模算法(CMA)和符号回归常数模算法(SR-CMA)存在的问题，提出了一种基于分数间隔的双模式常数模(DCMA)盲均衡算法。该算法将常规CMA算法和SR-CMA算法相结合，通过判决圆环完成两种算法之间的切换，根据信噪比确定判决圆环的边界。仿真结果表明，DCMA 的计算效率高于CMA，算法稳定性优于SR- CMA，而且可以获得较低的剩余均方误差。
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| 关 键 词： | 盲均衡 分数间隔 常数模 符号回归 |
| 文章编号： | 1009-5896(2005)10-1535-04 |
| 收稿时间： | 2004-05-19 |
| 修稿时间： | 2004-09-24 |
A Dual-Mode Blind Equalization Algorithm for Underwater Acoustic Channel |
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| Zhang Yan-ping,Zhao Jun-wei,Li Jin-ming.A Dual-Mode Blind Equalization Algorithm for Underwater Acoustic Channel[J].Journal of Electronics & Information Technology,2005,27(10):1535-1538. |
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| Authors: | Zhang Yan-ping Zhao Jun-wei Li Jin-ming |
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| Affiliation: | Institute of Acoustics Engineering, Northwestern Polytechnical University, Xi'an 710072, China;Shanxi Teacher's University, Linfen 041004, China |
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| Abstract: | A kind of Dual-mode Constant Modulus Algorithm(DCMA) based on fractionally-spaced equalization for blind equalization is presented to compensate the defects of the Constant Modulus Algorithm(CMA) and the Signed-Regressor CMA(SR-CMA). DCMA combines the conventional CMA and SR-CMA, and the switch process between CMA and SR-CMA is realized by decision circle ring which boundary is decided by the signal-to-noise radio. Computer simulation proves that DCMA is more robust than SR-CMA and more computationally efficient than CMA, and its residual mean-square error is lower than that of CMA and SR-CMA. |
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| Keywords: | Blind equalization Fractionally-spaced CMA (Constant Modulus Algorithm) SR(Signed-Regressor) |
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