A Novel Modulation Classification Approach Using Gabor Filter Network

Table 2

Updated Gabor filter atom parameters and weights for FSK modulation 2–64.

Shift parameter (𝑐)
FSK2	FSK4	FSK8	FSK16	FSK32	FSK64
4.25	4.36	5.35	4.67	5.74	4.22
4.09	4.88	5.80	4.20	4.55	5.93
4.58	4.59	5.54	5.94	4.01	5.89
5.50	5.81	5.71	5.35	5.57	5.25
4.46	5.55	4.60	5.83	4.59	5.96
5.36	4.93	4.28	4.01	5.50	5.89
4.27	4.49	4.16	4.31	5.15	5.95
4.38	5.28	4.75	5.70	5.76	5.40
4.35	5.03	4.41	5.04	5.39	4.77
4.38	4.29	5.58	5.97	5.31	5.84
Scale parameter (𝜎)
FSK2	FSK4	FSK8	FSK16	FSK32	FSK64
4.44	6.46	6.80	17.24	19.65	12.27
14.22	2.53	3.57	3.73	6.25	19.22
2.11	8.02	15.44	10.10	17.67	6.86
5.89	10.94	4.75	11.42	4.03	6.93
19.21	2.30	11.89	2.10	6.77	19.96
19.44	2.78	14.26	5.46	4.12	14.04
17.74	4.84	11.82	10.50	3.96	5.87
1.37	6.67	10.98	17.24	17.69	5.87
19.53	15.99	13.96	8.73	19.91	3.74
12.67	3.57	1.45	14.57	3.65	19.59
Modulation parameter (𝑓)
FSK2	FSK4	FSK8	FSK16	FSK32	FSK64
−0.15	−2.97	2.87	1.64	2.42	−1.70
1.15	2.77	0.84	0.76	−1.48	−2.07
1.22	1.82	2.69	−2.54	−1.23	−0.84
−1.50	2.91	−0.67	2.37	0.77	3.10
2.87	1.94	−0.99	−2.95	0.16	0.45
0.66	2.08	2.29	0.04	−3.00	−2.56
−2.45	−0.72	2.18	−1.43	−1.85	0.41
0.19	2.87	−1.23	2.59	2.05	−1.09
−0.44	1.69	−1.04	−2.30	0.69	0.34
2.55	−0.76	1.41	−1.80	0.79	−0.54
Weights (𝑤)
FSK2	FSK4	FSK8	FSK16	FSK32	FSK64
−2.579	−7.096	0.931	0.124	−0.318	8.540
−0.490	−0.572	−1.195	−0.239	−1.668	5.174
−1.532	−3.564	−1.195	3.627	4.663	−1.570
6.719	−5.807	−1.110	−0.984	−2.764	0.566
−9.317	4.059	−0.083	−0.283	0.840	−2.799
−8.051	−2.456	0.068	0.990	3.381	−1.628
0.012	3.768	0.443	0.242	4.211	12.898
−12.209	1.989	−1.487	1.298	−1.675	−6.270
8.351	5.954	−1.451	−0.296	−4.969	4.876
−4.070	−0.026	0.402	1.027	−5.423	−8.421