Signal theory (characterization, reconstruction, filtering, etc.), decision-feedback equalizer, Learning and adaptive systems in artificial intelligence, complex neural networks, Modulation and demodulation in information and communication theory, symbol demodulation, Computer architecture; Convergence of numerical methods; Decision theory; Demodulation; Error correction; Feedback control; Logic circuits; Neural networks; Nonlinear network analysis; Nonlinear network synthesis; Statistical methods; Bayesian neural equalizers; Complex-valued discriminative learning, Stochastic learning and adaptive control, Neural networks for/in biological studies, artificial life and related topics, neural networks, discriminative learning, Channel models (including quantum) in information and communication theory, bayes decision rule; channel equalization; complex neural networks; decision-feedback equalizer; discriminative learning; neural networks, channel equalization, Bayes decision rule