Blind Equalization for Power-Line Communications Using Chaos

In this paper, the use of chaos in power-line communication (PLC) with blind equalization of the multipath effects is considered. After investigating equalization methods for chaotic signals, we propose an minimum phase-space volume-extended Kalman filter (EKF) equalization method to fulfill the practical requirements. First, an EKF-based method is used to replace the inverse filter to overcome the channel noise. Second, a nearest neighbor search method and a fast system identification method are used to reduce the computational complexity. Computer simulations are used to confirm the efficiency of the proposed method. Furthermore, real PLC channel experiments are conducted to demonstrate the effectiveness of this method.