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利用小波变换进行MC-MPSK信号载频盲估计 被引量：2

Carrier Frequency Blind Estimation of MC-MPSK Signal Using Wavelet Transform
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摘要 小波变换是一种在强噪声背景下进行信号时频分析的有效方法.使用Haar小波变换对多载波多进制相移键控(MC-MPSK)信号中心频率进行了估计,给出了计算机仿真的结果,并将这种算法的估算结果与改进的克拉美-罗限(MCRB)进行了比较.结果表明,在没有先验知识的情况下,利用Haar小波变换方法可以精确地估计MC-MPSK信号中心频率,而且得到的估计性能受相位噪声的影响不大. Methods of wavelet transform are effective methods of time-frequency analysis under the background of strong noise. A method to estimate the frequency of multi-carrier m-ary phase-shift keying （MC-PSK） signals is showed, it uses Haar＇s wavelet transform. Simulation is used. The algorithm is compared to modified carmer-rao bound（MCRB）, it shows that the methods of wavelet transform can accurately estimate the carrier frequency of MC-PSK signals without prior knowledge. The estimation performance is effected by phase noise very slightly.
作者 赵福才 胡以华 张立
机构地区 中国人民解放军电子工程学院 中国人民解放军
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2008年第3期133-136,共4页 Journal of Beijing University of Posts and Telecommunications
关键词 多载波多进制相移键控信号 载频估计 小波变换 相位噪声 multi-carrier m-ary phase-shift keying signals frequency estimation wavelet transform phase noise
分类号 TN911.6 [电子电信—通信与信息系统] U472.41 [机械工程—车辆工程]
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参考文献8

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二级参考文献33

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共引文献25

同被引文献19

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引证文献2

二级引证文献14

北京邮电大学学报
2008年 第3期

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