讨论了准循环低密度校验码(QC-LDPC)在浅海水声信道中的实现方案.选取合适的浅海水声信道模型,针对强多径干扰进行了仿真.仿真结果表明,采用和积译码算法的QC-LDPC码编码复杂度较低,但性能接近于随机构造的低密度校验码.受多径效应影响,在浅海水声系统中采用QC-LDPC码时,信道误码率会随着衰落率的减小而略有下降,但仍能保持较好的纠错性能. The realization scheme of quasi-cyclic low-density parity-check code (QC-LDPC) in shallow sea acoustic channel is discussed. The suitable shallow sea acoustic channel model is selected to simulate the strong multi-path interference. The simulation results show that using QC The QC-LDPC code of the code algorithm has lower complexity of encoding, but its performance is close to that of randomly constructed low density parity check code. When the QC-LDPC code is adopted in the shallow marine acoustic system, the bit error rate With the declining rate of decline and a slight decline, but still able to maintain a better error correction performance.