Noise-induced synchronization in a system with a 1/f power spectrum

A spatially distributed system with 1/f fluctuations at coupled nonequilibrium phase transitions have been simulated by two nonlinear stochastic equations. It is shown numerically that at sufficiently high intensity of white noise in the system there arises noise-induced synchronization, which is a nonequilibrium phase transition. To the critical point of the nonequilibrium phase transition corresponds the 1/f power spectrum and the maximum of informational entropy.