由于水下通信信道对光信号的衰减极大,实际通信系统的编码应具有极强纠随机差错和纠突发差错的能力。针 对激光水下通信信道的特殊性,对信道模型进行分析,结合当前优异的编码技术——turbo码对信道进行编码,并通过与 未编码系统的性能进行比较,从而得出了turbo码实现低误码率的水下信息传输的优越性。 Due to the great attenuation of the optical signal in the underwater communication channel, the coding of the actual communication system should have strong ability of correcting error and error correction. According to the particularity of the laser underwater communication channel, the channel model is analyzed, and the current excellent coding technology - turbo code is used to encode the channel. Compared with the performance of uncoded system, the conclusion is drawn that the realization of turbo code is low Advantages of bit error rate underwater information transmission.