Optimizing bit-interleaved coded modulation for half-duplex relay based on protograph codes

摘要：

In this paper, we discuss the bit-interleaved coded modulation (BICM) for the half-duplex decode-and-forward (DF) relay network based on the protograph LDPC codes. The halfduplex relay BICM design problem can be transformed into a problem of rate-compatible BICM design, where the different segments of modulated symbols experience different SNRs. To optimize the BICM based on the rate-compatible protograph structure, we use the protograph extrinsic information transfer (EXIT) to evaluate the thresholds of different mapping patterns between the variable nodes in protographs and the modulated bits. With this tool, we search the efficient mapping pattern of BICM for the half-duplex DF network. Our work can achieve significant gains over the existing work.

关键词： protograph codes LDPC codes BICM protograph EXIT relay decode-and-forward.

作者: Sun Xiaojun Ming Jiang Wei Xu Chunming Zhao Meiling Ding

作者单位: National Mobile Communications Research Laboratory,Southeast University, Nanjing 210096, CHINA ZTE Corporation, Shanghai, CHINA

会议类型: 国际会议

会议名称: 2011年无线通信与信号处理国际会议(WCSP 2011)

会议地点: 南京

会议语种:英文

页码: 1-6

在线出版日期: 2011-11-09（万方平台首次上网日期，不代表论文的发表时间）