Chaotic coupling synchronization of hyperchaotic oscillators

In this paper, two kinds of chaotic coupling synchronization schemes are presented. The synchronizability of the coupled hyperchaotic oscillators is proved mathematically and the numerical simulation is also carried out. The numerical calculation of the largest conditional Lyapunov exponent shows that in a given range of coupling strengths, chaotic-coupling synchronization is quicker than the typical continuous-coupling synchronization.