Aiming at a kind of specific situation encountered in practice, the paper proposes a weak-signal separation algorithm based on Extended Alternating Projection Neural Networks (EAPNN) by combining the time-domain features of the signal with the frequency-domain features of the signal and taking advantage of conclusions on EAPNN. Simulation results demonstrate that the algorithm is effective and that the EAPNN-based signal separationalgorithm is better than the RLS-based signal separation algorithm. Although the EAPNN-based algorithm isdesigned for the specific situation, it is also applicable to the other situations and a basic frame of the EAPNN-basedsignal separation is presented. Owing to adopting neural network structure, the EAPNN-based algorithm is prone toparallel computation and VLSI design, consequently can satisfy real-time processing needs.
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