自動數位調變辨識之研究

THE STUDY OF AUTOMATIC DIGITAL MODULATION RECOGNITION

李念魯(Nien Lu Lee)

指導教授 ： 劉皆成

大同大學/電機資訊學院/通訊工程研究所/碩士(2008年)

摘要

「數位調變辨識」研究在通信系統領域中逐漸被重視，其民間與軍事應用上扮演如信號確認、干擾鑑別、監視、頻譜管理與監督等重要角色。本論文先介紹基本的數學與通信理論，接著說明、計算數位信號的主要特徵（Key Feature）並推導相關辨識程序及演算法，最後以模擬信號及邏輯運算方式進行自動辨識，雖然僅限3大類（ASK、FSK、PSK）、6個（二階與四階）不同模式的信號做研究，只要信雜比在8分貝以上，都有百分之99以上的自動辨識能力。

關鍵字

調變辨識，數位調變辨識，自動數位調變辨識

並列摘要

The study of "Digital modulation recognition" is gradually to pay attention to research in the communications system. It plays the important role in both civilian and military applications such as the signal confirmation, the interference identification, monitoring, the spectrum management and the surveillance. The paper first introduced the basic mathematics and the correspondence theory. Then I explained, calculated the key features of the digital signals and derived the recognition procedure and the algorithms from the nature. Finally, the simulation and the logic operation were made to recognize automatically. Although only 3 types（ASK, FSK, PSK） and 6 different models（2-levels and 4-levels） were identified, it still be completed even in SNR=8 dB and above with 99% automatic recognition.

並列關鍵字

automatic digital modulation recognition ； modulation recognition ； digital modulation recognition

參考文獻

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