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Table 2 Contrast experiment results

From: Adaptive parameter-tuning stochastic resonance based on SVD and its application in weak IF digital signal enhancement

Signal

SNR (dB)

Traditional method

Proposed method

ΔYI (dB)

Fixed parameter

YI (dB)

Optimal parameter

YI (dB)

2ASK

− 5

1000

5.44

5545

13.64

+ 8.2

− 10

7.26

6976

15.13

+ 7.87

− 15

3.37

6037

10.55

+ 7.18

BPSK

− 5

1000

5.03

8329

13.34

+ 8.31

− 10

6.98

8003

14.65

+ 7.67

− 15

4.86

8536

10.68

+ 5.82

16QAM

− 5

1000

5.03

5067

12.53

+ 7.5

− 10

6.64

6543

14.36

+ 7.72

− 15

3.94

5500

10.44

+ 6.5