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In this paper, the authors proposed a Parallel-Layered Belief-Propagation (PLBP) algorithm first, which makes a breakthrough in utilizing the layered decoding algorithm on the "Non-layered" Quasi-Cyclic (QC) LDPC codes, whose column weights are higher than one within layers. Their proposed PLBP algorithm not only achieves a better error performance, but also requires almost 50% less iterations, compared with the original flooding algorithm. Then they propose a low-power partial parallel decoder architecture based on the PLBP algorithm.
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