| 一种用于QAM解调信号的LMS自适应均衡器 |
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| 引用本文： | 戴忱,张萌,吴宁,孙江勇.一种用于QAM解调信号的LMS自适应均衡器[J].电子器件,2005,28(1):196-199. |
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| 作者姓名： | 戴忱 张萌 吴宁 孙江勇 |
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| 作者单位： | 东南大学国家专用集成电路工程技术研究中心,南京,210096;东南大学国家专用集成电路工程技术研究中心,南京,210096;东南大学国家专用集成电路工程技术研究中心,南京,210096;东南大学国家专用集成电路工程技术研究中心,南京,210096 |
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| 摘 要： | 设计了一种用于QAM(Quadrature Amplitude Modulation)解调信号的LMS自适应均衡器。此均衡器采用线性自适应算法中的最小均方算法(LMS)．其结构由线性横向滤波器和需要训练序列的滤波器抽头系数更新模块组成．它可实现16／64／256点的QAM解调。利用MATLAB／Simulink对LMS自适应均衡器的收敛速度、误码率等指标进行仿真模拟，仿真结果表明，此LMS自适应均衡器对通过非理想信道的QAM传输信号具有较好的均衡性能。
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| 关 键 词： | LMS自适应均衡器 正交幅度调制QAM 最小均方算法 MATLAB/Simulink |
| 文章编号： | 1005-9490(2005)01-0196-04 |
A LMS Adaptive Equalizer for QAM Demodulation Signal |
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| DAI Chen,ZHANG Meng,WU Ning,SUN Jiang-yong.A LMS Adaptive Equalizer for QAM Demodulation Signal[J].Journal of Electron Devices,2005,28(1):196-199. |
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| Authors: | DAI Chen ZHANG Meng WU Ning SUN Jiang-yong |
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| Abstract: | This paper proposes a LMS adaptive equalizer for QAM demodulation signal.The equalizer has been designed using Least Mean Square Algorithm (LMS),composed of linear transversal filter and filter taps update module using training sequence.The proposed LMS adaptive equalizer can implement 16/64/256QAM demodulation.MATLAB/Simulink can be used to simulate the convergence rate and symbol error rate(SER) of LMS adaptive equalizer. Simulation result demonstrates that the proposed equalizer has a better performance for QAM signal transmitted through the nonideal channel. |
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| Keywords: | MATLAB/Simulink |
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