提出一种基于累积多进制LDPC码的分布式信源编码算法。该方法可以直接对相关的多进制信源进行分布式编码,从而避免了传统方法在将多进制转为二进制时造成的相关性减弱。另外该方法可对相关性非平稳的相关信源提供灵活可变的编码速率。实验结果表明在对非平稳相关多进制信源进行分布式编码时该方法优于传统的基于二进制LDPC的方法。 A distributed source coding algorithm based on cumulative multi-ary LDPC codes is proposed. This method can directly encode the related multi-channel source, which avoids the weakening of the traditional method when it converts binary to binary system. In addition, this method can provide a flexible and variable coding rate for related non-stationary related sources. Experimental results show that this method is superior to the traditional binary LDPC-based method in distributed coding of non-stationary correlated multi-ary sources.