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Cycle-Free Windows of SC-LDPC Codes

In this paper, we define a window code to be the portion of an SC-LDPC code seen by a single iteration of a windowed decoder. We consider the design of SC-LDPC codes for windowed decoding via optimization of the window code. In particular, because iterative decoding is optimal on codes with cycle-fr...

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Bibliographic Details
Main Authors: McMillon, Emily, Kelley, Christine A.
Format: Conference Proceeding
Language:English
Subjects:
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Summary:In this paper, we define a window code to be the portion of an SC-LDPC code seen by a single iteration of a windowed decoder. We consider the design of SC-LDPC codes for windowed decoding via optimization of the window code. In particular, because iterative decoding is optimal on codes with cycle-free graph representations, we ask fundamental questions about the construction and parameters of cycle-free window codes. Further, we show that it is possible to have an SC-LDPC code with cycles and with cycle-free window codes.
ISSN:2157-8117
DOI:10.1109/ISIT50566.2022.9834404