Stopping-Set Assisted Reinforced Belief Propagation for Decoding Short LDPC Codes

Asif Ali Zamzami, Kuan Chuan Chao, Shih Chun Lin

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The low-density parity-check (LDPC) code is chosen to be a channel coding scheme for ultra-reliable and low-latency communications (URLLC) in 5G. However, short LDPC compromises the belief propagation (BP) decoder because of the stopping set (SS) in the decoding graph. We propose to perform different node operations according to the SS. A dynamic SS selection according to the received sequence is further applied. In the length 308 5G LDPC, our decoders outperform prior work, improving BP and collaborative BP at block error probability (BLER) of 3× 10-5 by around 0.176 and 0.092 dB respectively, with almost the same number of iterations.

Original languageEnglish
Pages (from-to)505-508
Number of pages4
JournalIEEE Communications Letters
Issue number3
Publication statusPublished - 1 Mar 2022
Externally publishedYes


  • 5G
  • Short LDPC codes
  • Stopping set


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