NDLI: Decoding schedule generating method for successive-cancellation decoder of polar codes

Content Provider	IET Digital Library
Author	Le, Dan Wu, Xianyan Niu, Xiamu
Abstract	Successive cancellation (SC) is the first and widely known decoder of polar codes, which has received a lot of attentions. However, its decoding schedule generating methods are still primitive. Based on a newly found factor, this study proposes an online method to generate the decoding schedule of SC decoder by a non-recursive way. The decoding schedule of SC decoder includes two parts. One is to determine which of likelihood ratios (LRs) can be shared and which of LRs need to be calculated. The other is to select a calculation formula for a LR to be computed. As shown by the comparisons among the proposed method and existing methods, the proposed method solves the first part of the decoding schedule with constant critical path delay and lower space complexity, and solves the second part of the decoding schedule with less calculations. Besides, experimental results show that the proposed method does not affect the error performance of polar codes.
Starting Page	462
Ending Page	467
Page Count	6
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 5, Mar (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0881
Journal	IET Communications
Publisher Date	2016-03-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Code Communication Complexity Constant Critical Path Delay Decoding Decoding Schedule Generating Method Electromagnetic Compatibility Error Performance Interference Interference Suppression Likelihood Ratios LR Calculation Formula Online Method Polar Code SC Decoder Space Complexity Successive-cancellation Decoder
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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