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Table 7 Clustering comparison 1

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

SNR

0

5

10

15

20

30

k -center

0.1460

0.1413

0.1302

0.1018

0.1018

0.1019

k -means

0.0528

0.0550

0.0468

0.0605

0.0572

0.0535

k -means++

0.0470

0.0446

0.0417

0.0502

0.0534

0.0490

  1. Comparing the processing time (in seconds) for k-center, k-means, and k-means++ clustering algorithms with different SNR values, averaged over 4-, 16-, and 64-QAM modulation schemes for a sample size of 256.