| 基于小波变换的数字信号调制样式自动识别 |
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| 引用本文： | 张红,祝常健. 基于小波变换的数字信号调制样式自动识别[J]. 现代电子技术, 2010, 33(13): 96-98 |
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| 作者姓名： | 张红 祝常健 |
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| 作者单位： | 1. 桂林师范高等专科学校,广西桂林,541001
2. 广西师范大学电子工程学院,广西桂林,541004 |
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| 摘 要： | 讨论基于软件无线电技术的一种数字信号调制样式的自动识别的算法。使用小波分析提取数字调制信号的调制特征参数，研究了利用小波分析在软件无线电中常用的调制样式（BPSK／QPSK）的识别问题，对高斯白噪声中的通信信号在不同信噪比情况下进行了识别计算机仿真。仿真及实验验证了用小波分析方法针对信噪比较低、对功耗限制严格的通信系统，具有较为理想的识别能力。
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| 关 键 词： | 软件无线电 调制方式 自动识别 小波分析 |
Automatic Identification of Digital Signal Modulation Mode Based on Wavelet Transform |
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| ZHANG Hong,ZHU Chang-jian. Automatic Identification of Digital Signal Modulation Mode Based on Wavelet Transform[J]. Modern Electronic Technique, 2010, 33(13): 96-98 |
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| Authors: | ZHANG Hong ZHU Chang-jian |
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| Affiliation: | 1. Guilin Normal College, Guilin 541001, China;2. School of Institute of Electronic Engineering, Guangxi Normal University, Guilin 541004, China) |
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| Abstract: | The automatic recognition algorithm of digital signal modulation mode based on software radio technology is discussed. The wavelet analysis is used to extract the modulation characteristic parameters of digital modulation signal, the identification about wavelet analysis in commonly used software radio modulation mode（BPSK/QPSK） is researched, the computer simulation on communication signal of Gaussian white noise at different SNR is identified. The simulation and experiment verify that wavelet analysis method has satisfactory recognition ability, especially for low SNR, severe restrictions on the power of communication system. |
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| Keywords: | software radio modulation automatic identification wavelet analysis |
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