Low encoding complexity can also be achieved due to the inherent quasi-cyclic structure of the LDPC codes.

由于产生的LDPC码本身固有的准循环结构，还能得到较低的编码复杂度。

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These quasi-cyclic LDPC can not only reduce the storage of LDPC generator matrix, but also decrease the encoding complexity efficiently, which is of great significance for the applications.

这些特殊结构的LDPC码不仅可以压缩编译码所需的矩阵储存空间，而且还能有效的降低编码复杂度，这对工程上实现LDPC码的应用具有重要的意义；

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According to the structure of Quasi-Cyclic LDPC code, we can make a trade-off between hardware complexity and decoding throughput by applying semi-parallel architecture.

利用准循环ldpc码的结构特点，使用半并行结构的译码器可以实现复杂度和译码速率的有效折中。

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