Complexity theory is a branch of computer science that studies the resources required to solve computational problems, particularly focusing on the classification of problems based on their inherent ...

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A new technique for efficient encoding of LDPC codes based on the known concept of Approximate Lower Triangulation (ALT) is introduced. The greedy permutation algorithm is presented to transform ...

The algorithm proceeds in four stages. In the first, which is a generalization of the Householder reduction of a single matrix to Hessenberg form [4], [5], A is reduced to upper Hessenberg form and at ...

Low-Density Parity-Check (LDPC) approaches Shannon-limit performance for binary field and long code lengths. However, performance of binary LDPC code is degraded when the code word length is small. An ...