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Title: Bilayer expurgated LDPC codes with uncoded relaying
Authors: Noor-A-Rahim, Md.
Zhang, Nan
Rabiul Islam, Sk. Md.
Guan, Yong Liang
Keywords: LDPC Codes
DRNTU::Engineering::Electrical and electronic engineering
Bilayer Codes
Issue Date: 2017
Source: Noor-A-Rahim, M., Zhang, N., Rabiul Islam, S. M., & Guan, Y. L. (2017). Bilayer expurgated LDPC codes with uncoded relaying. Digital Communications and Networks, 3(3), 176-179. doi:10.1016/j.dcan.2017.01.002
Series/Report no.: Digital Communications and Networks
Abstract: Bilayer low-density parity-check (LDPC) codes are an effective coding technique for decode-and-forward relaying, where the relay forwards extra parity bits to help the destination to decode the source bits correctly. In the existing bilayer coding scheme, these parity bits are protected by an error correcting code and assumed reliably available at the receiver. We propose an uncoded relaying scheme, where the extra parity bits are forwarded to the destination without any protection. Through density evolution analysis and simulation results, we show that our proposed scheme achieves better performance in terms of bit erasure probability than the existing relaying scheme. In addition, our proposed scheme results in lower complexity at the relay.
DOI: 10.1016/j.dcan.2017.01.002
Rights: © 2017 Chongqing University of Posts and Telecommunications. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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