Abstract: Using a threedimensional autonomous system as the node, we studied the asymptotic synchronization of globally coupled network with the chaotic system as the node, and used chaos concealment method to apply it to secure communication. By adding Gaussian white noise to interfere with the system, we used wavelet analysis theory to denoise the signal. The results of numerical simulation show that the signal can be recovered without distortion after the wavelet threshold de-noising.

Key words: wavelet denoising, chaos synchronization, complex network, secure communication