A Group Shuffled BP decoding for punctured Low-Density Parity-Check codes
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概要
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A group shuffled belief propagation (GSBP) decoding for punctured low-density parity-check (LDPC) codes is proposed in the paper. The proposed GSBP decoding schedules the updating order of each bit node according to its recovery order in the standard BP decoding. This enables the proposed decoding to recover all punctured nodes in the first iteration with the minimum required number of groups. Calculation of the number of effective updates, which indicates the number of nonzero check-to-bit messages, shows that the proposed decoding can achieve faster decoding convergence than the layered BP (LBP) decoding for rate-compatible punctured LDPC (RCP-LDPC) codes. In the simulation results, the maximum SNR gain of the proposed decoding over the LBP decoding is about 0.9dB at the FER of 10-4.
著者
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Choi Sooyong
School Of Electrical And Electronic Engineering Yonsei Univ.
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HWANG Seung-Hoon
Department of Electrical Engineering, Yonsei University
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Lee Sunyoung
School of Electrical and Electronic Engineering, Yonsei University
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Park Sangjoon
School of Electrical and Electronic Engineering, Yonsei University
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