Memory-efficient sum-product decoding of LDPC codes

  title={Memory-efficient sum-product decoding of LDPC codes},
  author={Hari Sankar and Krishna R. Narayanan},
  journal={IEEE Transactions on Communications},
Low-density parity-check (LDPC) codes perform very close to capacity for long lengths on several channels. However, the amount of memory (fixed-point numbers that need to be stored) required for implementing the message-passing algorithm increases linearly as the number of edges in the graph increases. In this letter, we propose a decoding algorithm for decoding LDPC codes that reduces the memory requirement at the decoder. The proposed decoding algorithm can be analyzed using density evolution… CONTINUE READING
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