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Adaptive Filter Design Using Recurrent Cerebellar Model Articulation Controller

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3 Author(s)
Lin, Chih-Min ; Dept. of Electr. Eng., Yuan Ze Univ., Chungli, Taiwan ; Li-Yang Chen ; Yeung, D.S.

A novel adaptive filter is proposed using a recurrent cerebellar-model-articulation-controller (CMAC). The proposed locally recurrent globally feedforward recurrent CMAC (RCMAC) has favorable properties of small size, good generalization, rapid learning, and dynamic response, thus it is more suitable for high-speed signal processing. To provide fast training, an efficient parameter learning algorithm based on the normalized gradient descent method is presented, in which the learning rates are on-line adapted. Then the Lyapunov function is utilized to derive the conditions of the adaptive learning rates, so the stability of the filtering error can be guaranteed. To demonstrate the performance of the proposed adaptive RCMAC filter, it is applied to a nonlinear channel equalization system and an adaptive noise cancelation system. The advantages of the proposed filter over other adaptive filters are verified through simulations.

Published in:

Neural Networks, IEEE Transactions on  (Volume:21 ,  Issue: 7 )