5th International ICST Conference on Communications and Networking in China

Research Article

Distributed turbo coding scheme with punctured soft systematic-bit repeat in relay systems over quasi-static Rayleigh fading channels

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  • @INPROCEEDINGS{10.4108/chinacom.2010.26,
        author={Muzi Wu and Yuexing Peng and Wenbo Wang},
        title={Distributed turbo coding scheme with punctured soft systematic-bit repeat in relay systems over quasi-static Rayleigh fading channels},
        proceedings={5th International ICST Conference on Communications and Networking in China},
        publisher={IEEE},
        proceedings_a={CHINACOM},
        year={2011},
        month={1},
        keywords={relay distributed turbo coding systematic-bit repeat},
        doi={10.4108/chinacom.2010.26}
    }
    
  • Muzi Wu
    Yuexing Peng
    Wenbo Wang
    Year: 2011
    Distributed turbo coding scheme with punctured soft systematic-bit repeat in relay systems over quasi-static Rayleigh fading channels
    CHINACOM
    ICST
    DOI: 10.4108/chinacom.2010.26
Muzi Wu1, Yuexing Peng1, Wenbo Wang1
  • 1: Wireless Signal Processing and Network Laboratory, Key Lab of Universal Wireless Communication, Ministry of Education, School of Information and Communication Engineering, Beijing University of Posts & Telecommunications, Beijing, China

Abstract

In order to mitigate the error propagation and achieve diversity gain, an enhanced distributed turbo coding (DTC) with soft information relaying (SIR) scheme is proposed for relay systems in practical fading channels. For the proposed scheme, not only the soft information of the additional parity bits but also the soft information of the systematic bits are regenerated and repeated at the relay. To avoid the penalty of spectrum efficiency loss due to the repeat of information on systematic bits, puncturing is employed. Bit error probability performance of the proposed DTC-SIR scheme is analyzed via distance spectrum and union bound method. Both the theoretic analysis and the numerical simulation show that the proposed scheme outperforms the traditional DTC scheme in practical fading channels.