Bilayer expurgated LDPC codes with uncoded relaying  

作　　者：Md. Noor-A-Rahim Nan Zhang Sk. Md. Rabiul Islam Y.L. Guan 

机构地区：[1]Centre for Infocomm Technology (INFINITUS), Nanyang Technological University, Singapore [2]Institute for TelecommunicationsResearch, University of South Australia, Adelaide, Australia [3]Dept.of Eleetronics and Communication Engineering, Khulna University of Engineering & Technology, Bangladesh

出　　处：《Digital Communications and Networks》2017年第3期176-179,共4页数字通信与网络（英文版）

摘　　要：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 uneoded 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.

关 键 词：Bilayer codes LDPC codes Density evolution Decode-and-forward relaying 

分 类 号：TN929.53[电子电信—通信与信息系统]