计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2013年
18期
223-226
,共4页
董庭亮%唐向宏%马丹丹%李双霞
董庭亮%唐嚮宏%馬丹丹%李雙霞
동정량%당향굉%마단단%리쌍하
小波包调制%调制识别%分数阶傅里叶%图像成形
小波包調製%調製識彆%分數階傅裏葉%圖像成形
소파포조제%조제식별%분수계부리협%도상성형
基于小波包调制信号和OFDM信号在分数阶傅里叶变换域分布的不同,利用图像成形技术对接收信号的分数阶傅里叶变换域分布图进行处理,探讨了小波包调制信号和OFDM信号的分数阶域分布成形图的特征参数,利用支持向量机做分类器,实现了这两种多载波调制信号的分类识别。计算机仿真结果,验证了算法的性能。
基于小波包調製信號和OFDM信號在分數階傅裏葉變換域分佈的不同,利用圖像成形技術對接收信號的分數階傅裏葉變換域分佈圖進行處理,探討瞭小波包調製信號和OFDM信號的分數階域分佈成形圖的特徵參數,利用支持嚮量機做分類器,實現瞭這兩種多載波調製信號的分類識彆。計算機倣真結果,驗證瞭算法的性能。
기우소파포조제신호화OFDM신호재분수계부리협변환역분포적불동,이용도상성형기술대접수신호적분수계부리협변환역분포도진행처리,탐토료소파포조제신호화OFDM신호적분수계역분포성형도적특정삼수,이용지지향량궤주분류기,실현료저량충다재파조제신호적분류식별。계산궤방진결과,험증료산법적성능。
Based on the difference of wavelet packet modulation signal and OFDM signal in the fractional Fourier domain distribution, the picture of received signal’s fractional Fourier domain distribution is processed by the image forming technology. In additive Gaussian white noise channel, Rayleigh fading channel and frequency selective fading channel, the characteristic parameters of the formed picture of fractional Fourier domain distribution are discussed. In addition, the modulation identification between OFDM and WPM is studied. The effectiveness of this method is done by the computer simulations.