Threshold-Based Successive-Cancellation Decoding of Polar Codes

Haotian Zheng, Seyyed Ali Hashemi, Zizheng Cao, A. M.J. Koonen, John Cioffi, Andrea Goldsmith

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


This paper focuses on fast successive-cancellation (SC) decoding of polar codes. A threshold-based hard-decision-aided scheme is proposed to speed up the decoding process, especially when the communications channel has low noise. In addition, to eliminate the error-correction performance degradation caused by hard decisions, a backtracking strategy is introduced. Simulation results on a polar code of code length 1024 and rate 1 /2 show that, with the help of the proposed scheme, the average decoding latency of existing fast SC decoding algorithms can be reduced by 53% at an \mathrm{E}-{b}/ \mathrm{N}-{0}\,= 5.0 dB with negligible error-correction performance degradation.

Original languageEnglish
Title of host publication2020 IEEE International Conference on Communications, ICC 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Electronic)9781728150895
Publication statusPublished - Jun 2020
Event2020 IEEE International Conference on Communications, ICC 2020 - Dublin, Ireland
Duration: 7 Jun 202011 Jun 2020


Conference2020 IEEE International Conference on Communications, ICC 2020

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