双向中继协作通信系统的迭代接收机设计  

Iterative receiver design for two-way relay cooperative communication systems

作　　者：张云帆 赵宏杰 

机构地区：[1]中国移动通信有限公司,北京102206 [2]北京遥测技术研究所,北京100094

出　　处：《电子技术应用》2015年第4期108-111,115,共5页Application of Electronic Technique

摘　　要：针对双向中继协作系统建立了中继节点多用户接收机因子图模型,通过利用高斯参数化对混合高斯分布进行近似,提出了一种联合信道估计、多用户检测与译码的迭代消息传递算法,在合理的复杂度下有效地提高了中继接收机对于多用户混合信号的检测性能。This paper presents a factor graph model of multiuser receiver at relay node for two-way relay cooperative communication system. By exploiting Gaussian parameterization to approximate Gaussian mixture distribution, a joint channel estimation, multiuser detection and decoding algorithm based on message passing is further proposed. The algorithm effectively improves the detection performance for muhiuser superposed signals at relay receiver while keeps the computational complexity at an acceptable level.

关 键 词：双向中继 迭代接收机 因子图 消息传递 

分 类 号：TN911.22[电子电信—通信与信息系统]