| 基于HHT变换的时频分析法及其在2FSK系统解调中的应用 |
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| 引用本文： | 毛炜,金荣洪,李家强,耿军平,范瑜.基于HHT变换的时频分析法及其在2FSK系统解调中的应用[J].电子与信息学报,2006,28(12):2318-2322. |
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| 作者姓名： | 毛炜 金荣洪 李家强 耿军平 范瑜 |
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| 作者单位： | 上海交通大学电子工程系,上海,200030 |
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| 摘 要： | 该文用一种非平稳信号时频分析方法(HHT变换)。该方法立足于信号本身特征，着重分析信号的瞬时频率分布，实现2FSK系统的解调。通过与传统解调方法的比较，论述了该方法在2FSK信号解调中的合理性和可行性。仿真结果给出了该方法在解调过程中的抗噪声性能，表明了该方法的有效性。
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| 关 键 词： | HHT FSK 时频分布 调制解调 抗噪声性能 |
| 文章编号： | 1009-5896(2006)12-2318-05 |
| 收稿时间： | 2005-04-21 |
| 修稿时间： | 2005-08-30 |
Time-Frequency Analysis Method Based on HHT and Its Application
in 2FSK Demodulation Systems |
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| Mao Wei,Jin Rong-hong,Li Jia-qiang,Geng Jun-ping,Fan Yu.Time-Frequency Analysis Method Based on HHT and Its Application
in 2FSK Demodulation Systems[J].Journal of Electronics & Information Technology,2006,28(12):2318-2322. |
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| Authors: | Mao Wei Jin Rong-hong Li Jia-qiang Geng Jun-ping Fan Yu |
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| Affiliation: | School of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | A time-frequency analysis method, named HHT(Hilbert-Huang Transformation), is applied to the demodulation of 2FSK systems. This method, based on the characteristics of the signal itself, is often used to analyze the instantaneous frequency distributions for non-stationary signals, and in this thesis, it is adopted to realize the demodulation of 2FSK systems. The rationality and feasibility in the process of demodulation is discussed by comparison with traditional methods. Simulation results prove the anti-noise capability and demodulation effectiveness of this new method. |
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| Keywords: | HHT FSK |
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