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EXIT Charts for Low-Density Algebra-Check Codes.

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Titel: EXIT Charts for Low-Density Algebra-Check Codes.
Autoren: Tang, Zuo, Lei, Jing, Huang, Ying
Quelle: Entropy; Dec2024, Vol. 26 Issue 12, p1118, 16p
Schlagwörter: CHANNEL coding, LOW density parity check codes, ALGEBRAIC codes, KNOWLEDGE transfer, ITERATIVE decoding, DECODING algorithms
Abstract: This paper focuses on the Low-Density Algebra-Check (LDAC) code, a novel low-rate channel code derived from the Low-Density Parity-Check (LDPC) code with expanded algebra-check constraints. A method for optimizing LDAC code design using Extrinsic Information Transfer (EXIT) charts is presented. Firstly, an iterative decoding model for LDAC is established according to its structure, and a method for plotting EXIT curves of the algebra-check node decoder is proposed. Then, the performance of two types of algebra-check nodes under different conditions is analyzed via EXIT curves. Finally, a low-rate LDAC code with enhanced coding gain is constructed, demonstrating the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]
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Beschreibung
Abstract:This paper focuses on the Low-Density Algebra-Check (LDAC) code, a novel low-rate channel code derived from the Low-Density Parity-Check (LDPC) code with expanded algebra-check constraints. A method for optimizing LDAC code design using Extrinsic Information Transfer (EXIT) charts is presented. Firstly, an iterative decoding model for LDAC is established according to its structure, and a method for plotting EXIT curves of the algebra-check node decoder is proposed. Then, the performance of two types of algebra-check nodes under different conditions is analyzed via EXIT curves. Finally, a low-rate LDAC code with enhanced coding gain is constructed, demonstrating the effectiveness of the proposed method. [ABSTRACT FROM AUTHOR]
ISSN:10994300
DOI:10.3390/e26121118