This paper analyzes the structure of balanced-cycles in QC-LDPC codes. And proposes an algorithm to search for the incidencematrices of the simple balanced-cycles of arbitrary length.
分析了准循环ldpc码的平衡环的结构，并给出了搜索任意长度的最简平衡环的关联矩阵的方法。
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We use script letter to avoid confusion with the incidence and circ matrices.