Dobre, O.A.; Abdi, A.; Bar-Ness, Y.; Su, W.: 'Survey of automatic modulation classification techniques: classical approaches and new trends', IET Communications, 2007, 1, (2), p. 137-156, DOI: 10.1049/iet-com:20050176 IET Digital Library, https://digital-library.theiet.org/;jsessionid=1n1sofkvrm71a.x-iet-live-01content/journals/10.1049/iet-com_20050176