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- W2021610081 abstract "Low-density parity-check (LDPC) codes are linear block codes defined by sparse parity-check matrices. The codes exhibit excellent performance under iterative decoding, and the weight distribution is used to analyze lower error probability of their decoding performance. In this paper, we propose a probabilistic method for computing the weight distribution of LDPC codes. The proposed method efficiently finds low-weight codewords in a given LDPC code by using Stern's algorithm, and stochastically computes the low part of the weight distribution from the frequency of the found codewords. It is based on a relation between the number of codewords with a given weight and the rate of generating the codewords in Stern's algorithm. In the numerical results for LDPC codes of length 504, 1008 and 4896, we could compute the weight distribution by the proposed method with greater accuracy than by conventional methods." @default.
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- W2021610081 date "2009-01-01" @default.
- W2021610081 modified "2023-09-27" @default.
- W2021610081 title "A Probabilistic Algorithm for Computing the Weight Distribution of LDPC Codes" @default.
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- W2021610081 doi "https://doi.org/10.1587/transfun.e92.a.1677" @default.
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