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Gradient Descent Bit Flipping Algorithms for Decoding LDPC Codes
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DOI：10.1109/TCOMM.2010.06.090046.png)
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Abstract
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A novel class of bit-flipping (BF) algorithm for decoding low-density parity-check (LDPC) codes is presented. The proposed algorithms, which are referred to as gradient descent bit flipping (GDBF) algorithms, can be regarded as simplified gradient descent algorithms. The proposed algorithms exhibit better decoding performance than known BF algorithms, such as the weighted BF algorithm or the modified weighted BF algorithm for several LDPC codes.
Keywords:
LDPC code
bit-flipping algorithm
gradient descent algorithm
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