Free Space Optical Communications (FSO) has become a magnet for a variety of applications in the communication field. Signal attenuation was highlighted in data transfer, particularly in the multimedia e.g. high-speed video camera network requires sufficient throughput. This paper focuses on finding an approach to improve the signal received through the use of bi-directional FSO multiple access channel with high transmission power to avoid signal attenuation in short distances over atmospheric turbulence channels. Comparison of the extracted results proved that the performance of the proposed system is effective to overcome these effects.