| 采用LMS算法消除开关电源对CDMA接收机的影响 |
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| 引用本文： | 张贺,卜刚,罗秋娴.采用LMS算法消除开关电源对CDMA接收机的影响[J].电子科技,2014,27(5):72-75. |
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| 作者姓名： | 张贺 卜刚 罗秋娴 |
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| 作者单位： | (南京航空航天大学 电子信息工程学院,江苏 南京 210016) |
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| 摘 要： | 研究了开关电源开关频率对CDMA接收机的影响,拟提高开关电源的应用领域。分析了开关电源的噪声及常用抑制噪声的方法。通过Simulink建立CDMA通信系统模型,以单频正弦为噪声干扰CDMA接收机,并利用自适应陷波器和LMS算法在接收机基带处进行处理。处理前后误码率、EVM值均有不同程度的下降。该方法为开关电源在射频领域的应用提供了基础,且具有良好的应用前景。
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| 关 键 词： | 开关电源 CDMA LMS |
Elimination of the Influence of Switching Power Supply on CDMA Receiver by LMS Algorithms |
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| ZHANG He;BU Gang;LUO Qiuxian.Elimination of the Influence of Switching Power Supply on CDMA Receiver by LMS Algorithms[J].Electronic Science and Technology,2014,27(5):72-75. |
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| Authors: | ZHANG He;BU Gang;LUO Qiuxian |
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| Affiliation: | (College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | This paper researches the influence of the switching power supply frequency on the CDMA receiver in an attempt to extend the applications of the switching power supply. The noise of switching power supply and the common methods for reducing noise are analyzed. A CDMA communication system model is set up by the simulink with single frequency sinusoidal as the noise. The adaptive trap and LMS algorithm are used to handle the noise in the receiver baseband with a general decrease in BER, EVM entry value of varying degrees after processing. This method provides the basis for switching power supply in the field of RF. |
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| Keywords: | switching power supply CDMA LMS |
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