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Table 7 Comparison between different works in terms of features, ANN model and the achieved SNR with the recognition accuracy

From: Very-low-SNR cognitive receiver based on wavelet preprocessed signal patterns and neural network

Reference

Application

Applied features

Type of ANN

Recognition accuracy (%)

[22]

AMC

Instantaneous temporal feature-based

FANN (5,19,8) and PANN (5,1800,8)

Overall success rate at -5 db are 65.63% and 55.5% respectively.

[23]

AMC

Instantaneous temporal feature-based modulation

FANN (4,7,5)

the overall success rate at -5 dB is 99.65%.

[25]

AMC

Continuous wavelet transform (CWT)

N/A

The overall success rate at 0 dB is 99.6% (using 10 features).

[26]

AMC

Instantaneous information and signal spectrum

N/A

The overall success rate at 3 dB is 98.6% (using 10 features).

[37]

AMC

Combination of the higher order moments, higher order cumulants and instantaneous characteristics of digital modulations

Radial basis function (RBF) probabilistic neural network (PNN)

The overall success rate at -3 dB is 87.50%. The overall success rate at -3 dB is 86.45%.

[38]

AMC

7-level DWT

Adaptive Network Based Fuzzy Inference Systems of 5 hidden layers

The overall success rate using DB2 at -5 dB is 98%.

[39]

AMC

Haar Wavelet Transform

N/A

The overall success rate at -7 dB is 99.71%.

[40]

AMC

Haar Wavelet Transform

N/A

The overall success rate at 5 dB is 97.93%.

[27]

Modulation classification and signal encoding

1-level DB2 DWT

FFNN(30,14,3)

The overall success rate a -11 dB for 3-bit glossaries is 96.0%.

PBCCS

Modulation classification and signal encoding

5-level DB2 DWT

FFNN(27,14,3), FFNN(27,14,4), FFNN(27,14,5)

The overall success rate at -11 dB for 3-bit, 4-bit and 5-bit glossaries are 99.0%, 90.3% and 72.79%, respectively.