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EURASIP Journal on Wireless Communications and Networking
Figure 5 | EURASIP Journal on Wireless Communications and Networking

Figure 5

From: I-Q diagram utilization in a novel modulation classification technique for cognitive radio applications

Figure 5

Clustering algorithm performances of PSK and QAM modulations. (a) Clustering algorithm performed on signals with SNR = 10 dB. The red dots show the center of each cluster. (i) QPSK, (ii) 8-PSK, (iii) 16-PSK, and (iv) 32-PSK. (b) Clustering algorithm performed on signals with SNR = 10 dB. The red dots show the center of each cluster. (i) 4-QAM, (ii) 16-QAM, (iii) 64-QAM, and (iv) 256-QAM.

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