Improved CRC aided BP decoding for polar codes

Sungkwon Hong, Jong Moon Chung

Research output: Contribution to journalArticlepeer-review


In this letter, a modified message passing algorithm to prevent short cycles in the factor graph is proposed and combined with a relaxation technique to improve the performance of cyclic redundancy check aided belief propagation decoding for polar codes. Numerical results show that the proposed scheme can achieve a 0.7 dB coding gain, for the code rate of 0.5 at the block error rate of 10−5 with a comparable average number of iterations over the pure belief propagation decoding scheme when the code block length is 1024.

Original languageEnglish
Pages (from-to)526-528
Number of pages3
JournalElectronics Letters
Issue number13
Publication statusPublished - 2021 Jun

Bibliographical note

Funding Information:
This work was supported by Institute of Information & Communications Technology Planning & Evaluation (IITP) grant funded by the Korea government (MSIT, 2021‐0‐00040, Development of intelligent stealth technology for information and communication resources for public affairs and missions).

Publisher Copyright:
© 2021 The Authors. Electronics Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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