Taking the complex network as the background, and based on the Lyapunov stability theory, this paper firstly studies the asymptotic synchronization of globally coupled network, for which a new four-wing chaotic system is a node. Secondly, as a node, the four-wing chaotic system is applied to secure communication by chaos cover. Thirdly, Gaussian noise is added to cause noise interference, and the signal will be de-noised by wavelet analysis theory. Lastly, the result of numerical calculation with Matlab demonstrates that useful signals will be restored well after the wavelet threshold de-noising.
