Construction method of list-based compatible multi-rate fixed-length quasi-cyclic LDPC code

By constructing multi-rate fixed-length quasi-cyclic LDPC codes and using the initial base matrix and row and column addition and deletion operations, an LDPC code parity check matrix adapted to satellite communication systems is generated, solving the problem of performance imbalance within the code rate adjustment range in existing technologies and improving the communication quality of satellite communication systems.

CN116566401BActive Publication Date: 2026-07-21SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Filing Date
2023-05-15
Publication Date
2026-07-21

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Abstract

The application discloses a list-based compatible multi-code rate fixed length quasi-cyclic LDPC code construction method, and belongs to the field of channel coding and decoding. The check matrix construction of the compatible multi-code rate LDPC code is realized in a manner of gradually increasing row by row and gradually reducing code rate through a base matrix corresponding to a given highest code rate LDPC code mother code. The construction method can realize the check matrix construction of a series of compatible multi-code rate quasi-cyclic LDPC codes with excellent performance by gradually increasing row by row and gradually reducing code rate when the base matrix corresponding to the given highest code rate LDPC code mother code is realized.
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