Construction of Short-Length QC LDPC Codes with Eliminated Girth 4 and Girth 6
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Resource Overview
A method for constructing short-length QC LDPC codes free from girth-4 and girth-6 cycles, including implementation algorithms and matrix validation techniques
Detailed Documentation
Short-length construction method for QC LDPC (Quasi-Cyclic Low-Density Parity-Check) codes based on elimination of girth-4 and girth-6 cycles. The implementation typically involves matrix permutation algorithms that systematically check and remove short cycles while maintaining code performance. Key steps include base matrix design, circulant permutation matrix selection, and cycle detection algorithms using depth-first search or matrix exponent verification methods.
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