随着LDPC码的广泛应用,尤其是在电池供电设备上的应用,解码器设计者面临的一个重大挑战就是如何减少其使用的存储器大小和存储器块数。行消息传递算法和基于置信传播的归一化算法的提出使得设计存储器的优化的解码器更为容易。对于一个普通的规则LDPC码来说,则存在一种性能良好且节省存储器的串行解码器结构,一个针对David MacKay的4000×8000规则LDPC码的解码器设计就是一个很好的例子。 With the widespread use of LDPC codes, especially on battery-powered devices, one of the major challenges for decoder designers is how to reduce the memory size and number of blocks they use. The introduction of row messaging algorithms and the normalization algorithm based on belief propagation makes it easier to design memory-optimized decoders. For a regular, regular LDPC code, there is a well-behaved, memory-saving serial decoder architecture. A good example is the decoder design of a 4000 × 8000 LDPC code for David MacKay.