| 基于小波变换的数字通信信号识别 |
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| 引用本文： | 薛磊,刘小秋.基于小波变换的数字通信信号识别[J].国际商务研究,2006,46(3):52-56. |
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| 作者姓名： | 薛磊 刘小秋 |
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| 作者单位： | 上海应用技术学院 |
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| 摘 要： | 本文讨论商务英语教学中培养使用英语从事商务活动的内涵品质的重要性,阐述了培养从事商务活动的人员内涵品质不仅是商务英语学习的重要内容, 也是商务英语人才的必备的人文素质的观点,并提出了培养人文素质可运用的课堂活动及其原则。
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| 关 键 词： | 商务英语 商务文化 人文素质 培养 |
| 文章编号： | 1006-1894（2006）03-0052-03 |
| 收稿时间： | 2005/4/11 0:00:00 |
| 修稿时间： | 2005/10/21 0:00:00 |
Modulation Identification of Digital Signals Based on Wavelet Transform |
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| XUE Lei,LIU Xiao-qiu.Modulation Identification of Digital Signals Based on Wavelet Transform[J].International Business Research,2006,46(3):52-56. |
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| Authors: | XUE Lei LIU Xiao-qiu |
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| Institution: | PLA Electronic Engineering Institute, Hefei 230037, China |
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| Abstract: | Wavelet transform(WT) is suitable for detecting transient signals.Instantaneous features of digital signals will be presented when the symbols change.This paper discusses the wavelet transform of the signals with and without the amplitude normalization,then extracts the ratio of the variance to the square of mean as the key feature,and finally an artificial neural networks(ANN) classifier is proposed to identify three digital modulation signals: ASK,FSK and PSK.Simulations show that the algorithm is very effective at low SNR of 5 dB. |
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| Keywords: | digital modulation signals modulation identification wavelet transform artificial neural network(ANN) |
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