Study on multipath interference suppression technology of underwater wireless optical communication

Aiming at the multipath effect existing in underwater wireless optical communication system, the small angle approximation method was used to simulate the multipath effect under different water quality and communication distance, and a new MDPCM modulation system was designed to suppress the multipath effect by changing the guaranteed time slot. The experimental results showed that the anti-multipath effect ability of the system could be improved and its bit error rate could be reduced by changing the guaranteed time slot in the MDPCM.