基于联合迭代检测译码的多中继RA编码协作系统  

Multi-relay RA coded cooperation system based on joint iterative detection decoding

作　　者：唐蕾[1,2] 仰枫帆[2] 刘伟伟[1] 王天宇[3] 

机构地区：[1]南京工程学院通信工程学院,江苏南京211167 [2]南京航空航天大学电子信息工程学院,江苏南京210016 [3]中兴通讯股份有限公司FN产品MKT及方案团队,江苏南京210012

出　　处：《现代电子技术》2018年第1期1-4,共4页Modern Electronics Technique

基　　金：南京工程学院校级科研基金(YKJ201417;YKJ201419)联合资助~~

摘　　要：为提高协作系统的性能,提出一种RA码多中继编码协作通信系统。首先,在系统的源和中继节点处采用RA编码,推导出与目的节点接收码字对应的多层Tanner图;然后,以多层Tanner图为基础,结合MAP算法给出一种联合迭代检测译码新算法译码,完成目的点的信号检测。理论分析和数值模拟表明,所提出的新方法能够充分实现多中继编码协作所具有的潜在分集和编码增益,随着内外迭代次数的增加,误比特率性能迅速提升,在相同条件下明显优于编码非协作系统。In order to improve the system performance, a multi-relay coded cooperation communication system based on repeat accumulation （RA） code is proposed. The RA code is used at the source node and relay node of the system. The multi-layer Tanner graph corresponding to the reception codon of the destination node is deduced. A new coding method based on the multi- layer Tanner graph and MAP algorithm is used to realize the joint iterative detection decoding, and signal detection of the destination point. The theoretical analysis and numerical simulation results show that the new method can realize the potential diversity and coding gain owned by multi-relay coded cooperation, with the increase of the internal and external iterations, the performance of the bit error rate （BER） is superior to that of the coded non-cooperation system.

关 键 词：多中继编码协作 RA码 LDPC码 联合迭代检测译码 多层Tanner图 误比特率 

分 类 号：TN911-34[电子电信—通信与信息系统]