| 基于虚拟仪器的CDMA2000频率误差测量 |
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| 引用本文： | 周巧玲,吕锋. 基于虚拟仪器的CDMA2000频率误差测量[J]. 电子测量技术, 2010, 33(1): 71-73 |
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| 作者姓名： | 周巧玲 吕锋 |
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| 作者单位： | 武汉理工大学信息工程学院,武汉,430070;武汉理工大学信息工程学院,武汉,430070 |
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| 摘 要： | 给出了一种基于虚拟仪器的精确测量CDMA2000信号频率误差的方法。该方法用FFT来对信号频谱进行粗略的估计,获取需要细化分析的窄带频谱范围,再在该窄带范围内利用线性调频Z变换（CZT）进行频率细化分析,在限制运算量的情况下实现较高的频率分辨率。实验证明,该方法能够有效地精确测量信号的频率误差。
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| 关 键 词： | 频率误差 CDMA2000 线性调频Z变换 LabVIEW |
CDMA2000 frequency error measurement based on virtual instrument |
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| Zhou Qiaoling,Lv Feng. CDMA2000 frequency error measurement based on virtual instrument[J]. Electronic Measurement Technology, 2010, 33(1): 71-73 |
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| Authors: | Zhou Qiaoling Lv Feng |
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| Affiliation: | WuHan University Of Technology;Wuhan 430070 |
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| Abstract: | A method of measuring CDMA2000 signal frequency error based on virtual instrument was proposed,which estimated the spectrum of signal approximately by FFT to gain narrow-band spectral range,then conducted detailed analysis of frequency by chirp Z transform(CZT)within the scope of narrow-band.CZT could achieve higher frequency accuracy with restricted computation.Experiments show that the method can effectively and accurately measure signal's frequency error. |
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| Keywords: | frequency error CDMA2000 CZT LabVIEW |
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