A fast parallel SC-Fano decoding algorithm for PAC codes

In order to effectively reduce the “decoding latency” of successive cancellation decoding aided Fano (SC-Fano) decoder employed in polarization-adjusted convolutional (PAC) codes, a fast parallel SC-Fano decoding algorithm is designed, which leverages multiple individual decoding components. Critica...

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Published in:	Science China. Information sciences Vol. 66; no. 5; p. 152301
Main Authors:	Wu, Yunzhi, Li, Li, Fan, Pingzhi
Format:	Journal Article
Language:	English
Published:	Beijing Science China Press 01.05.2023 Springer Nature B.V
Subjects:	Algorithms Codes Computer Science Convolutional codes Decoders Decoding Information Systems and Communication Service Performance degradation Research Paper complexity PAC codes parallel decoding Fano decoding
ISSN:	1674-733X, 1869-1919
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Abstract	In order to effectively reduce the “decoding latency” of successive cancellation decoding aided Fano (SC-Fano) decoder employed in polarization-adjusted convolutional (PAC) codes, a fast parallel SC-Fano decoding algorithm is designed, which leverages multiple individual decoding components. Critical challenges arise from how to appropriately initialize the thresholds of different SC-Fano decoding components and how will these decoding components cooperate with each other. After appropriately overcoming these challenges, our design is capable of halving the “decoding latency” without incurring any noticeable frame error rate (FER) performance degradation, meanwhile, the overall computational complexity is normally constrained below one and a half times of that required by conventional SC-Fano decoders in simulated typical configurations.
AbstractList	In order to effectively reduce the “decoding latency” of successive cancellation decoding aided Fano (SC-Fano) decoder employed in polarization-adjusted convolutional (PAC) codes, a fast parallel SC-Fano decoding algorithm is designed, which leverages multiple individual decoding components. Critical challenges arise from how to appropriately initialize the thresholds of different SC-Fano decoding components and how will these decoding components cooperate with each other. After appropriately overcoming these challenges, our design is capable of halving the “decoding latency” without incurring any noticeable frame error rate (FER) performance degradation, meanwhile, the overall computational complexity is normally constrained below one and a half times of that required by conventional SC-Fano decoders in simulated typical configurations.
ArticleNumber	152301
Author	Wu, Yunzhi Li, Li Fan, Pingzhi
Author_xml	– sequence: 1 givenname: Yunzhi surname: Wu fullname: Wu, Yunzhi organization: Information Coding & Transmission Key Lab of Sichuan Province, Communications & Sensor Networks for Modern Transportation International Cooperatation Research Centre of China, Southwest Jiaotong University – sequence: 2 givenname: Li surname: Li fullname: Li, Li email: ll5e08@home.swjtu.edu.cn organization: Information Coding & Transmission Key Lab of Sichuan Province, Communications & Sensor Networks for Modern Transportation International Cooperatation Research Centre of China, Southwest Jiaotong University – sequence: 3 givenname: Pingzhi surname: Fan fullname: Fan, Pingzhi organization: Information Coding & Transmission Key Lab of Sichuan Province, Communications & Sensor Networks for Modern Transportation International Cooperatation Research Centre of China, Southwest Jiaotong University
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Snippet	In order to effectively reduce the “decoding latency” of successive cancellation decoding aided Fano (SC-Fano) decoder employed in polarization-adjusted...
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SubjectTerms	Algorithms Codes Computer Science Convolutional codes Decoders Decoding Information Systems and Communication Service Performance degradation Research Paper
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Title	A fast parallel SC-Fano decoding algorithm for PAC codes
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