The asymmetrically clipped orthogonal frequency division multiplexing technique was applied to the atmospheric communication system,and the performance of atmospheric communication system was analyzed using asymmetrically clipped orthogonal frequency division multiplexing technique through atmospheric turbulence channels.On this basis,asymmetrically clipped optical orthogonal frequency division multiplexing modulation was compared with on/off keying modulation and DC optical orthogonal frequency division multiplexing modulation,which was simulated in the atmospheric turbulence channel.The simulation results show that the proposed scheme can satisfy the requirements of atmospheric laser communication system.