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Table 2 Confusion matrix at SNR = 4 dB.

From: Automatic Modulation Recognition Using Wavelet Transform and Neural Networks in Wireless Systems

 

QAM16

QAM32

QAM64

PSK2

PSK8

ASK4

ASK8

FSK4

FSK8

MSK

QAM16

99.2

  

0.1

 

0.7

    

QAM32

 

99.3

 

0.2

 

0.5

    

QAM64

 

0.2

99.6

  

0.2

    

PSK2

   

99.4

0.6

     

PSK8

   

0.7

99.3

     

ASK4

     

99.5

0.5

   

ASK8

     

0.6

99.4

   

FSK4

       

99.4

0.4

0.2

FSK8

       

0.6

99.1

0.3

MSK

       

0.2

0.1

99.7

  1. The confusion matrix shows a high percentage of correct full-class modulation recognition when SNR is not lower than 4 dB.