Generalized Partially Information Coupled Polar Codes With Arbitrary Coupling Depth and Their Decoding Algorithms

IEEE Access

Jong-Seon No¹  Hyoungbae Ahn¹  Sang-Hyo Kim² 

[1] Department of Electrical and Computer Engineering, INMC, Seoul National University, Seoul, South Korea;Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, South Korea;

关键词: Partially information coupled codes;    polar codes;    spatial coupling;    successive cancellation list decoding;   

DOI  :  10.1109/ACCESS.2021.3058661

来源: DOAJ

【 摘 要 】

We propose generalized partially information coupled (PIC) polar codes and their construction method. In the proposed codes, each code block (CB) shares systematic information bits partially with J adjacent CBs on each side, where J is referred to as the coupling depth. The conventional PIC polar code is a special case of the generalized PIC polar codes for J = 1. We modify the polar CB decoding and propose various inter-CB decoding schemes which apply to the code of arbitrary coupling depth J. We also propose a low complexity evaluation method for the error rate of the generalized PIC polar codes, without channel generation and decoding operation. Numerical results show that this approximate evaluation is very accurate. It is verified by simulation that more coding gain can be attained for J ≥ 2. Finally, we compare the decoding complexities of the conventional inter-CB decoding algorithms and the proposed algorithms with which a lower decoding complexity is achieved without performance degradation.

【 授权许可】

Unknown