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Digital Signal Processing

Hybrid weighted bit flipping low density parity check decoding

Honey Durga Tiwari, Harsh Durga Tiwari, Kang‐Yoon Lee

Published Feb 5, 2014• 5 citations
Publisher
DOI
10.1016/j.dsp.2014.01.011

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Abstract- Low Density Parity Check (LDPC) codes can be decoded in various ways, namely the Bit-Flipping (BF) algorithm, the Weighted BF algorithm (WBF) ， the Belief Propagation (BP) algorithm and so on. These algorithms provide a wide range of tradeoffs among decoding complexity, decoding speed, and error rate performance. In this paper, a novel self-reliability-based weighted bit-flipping decoding scheme for low-density parity-check codes is proposed. Improvement in performance is observed in comparison with the modified weighted bit-flipping decoding scheme, and the decoding complexity can be significantly reduced as well. Key-Words:- Low-density parity-check (LDPC) codes, decoding algorithm, bit flipping, self reliability