MIMO系统中基于因子图的联合迭代检测和LDPC译码
Joint iterative detector and LDPC decoder based on factor graph in MIMO system
王忠勇 1靳梦瑶 1段琳琳 2王行业1
作者信息
- 1. 郑州大学信息工程学院,河南郑州450001
- 2. 郑州大学信息工程学院,河南郑州450001;解放军信息工程大学理学院,河南郑州450001
- 折叠
摘要
本文提出了多输入多输出系统中频率选择性衰落信道下的一种联合迭代检测和LDPC译码的算法,采用因子图的模型将检测器和译码器融合到了一个框架中,通过检测器与译码器两个处理器内部及全局的信息混合调度改善系统性能.与MAP检测比,该算法以较低的复杂度获得良好的性能,因子图检测特有的并行调度在硬件快速实现上更具优势.
Abstract
The paper propose a joint iterative detector and LDPC decoder algorithm in frequency selective multiple-input multiple-output system and combine the detector and decoder into a framework based on factor graph.The performance can be improved by scheduling the internal message and global message of the detector and the decoder.Compared with MAP detector,the proposed algorithm has good performance and the parallel schedule has more advantages in fast hardware implementations.
关键词
多输入多输出/因子图/和积算法/迭代检测与LDPC译码Key words
MIMO/factor graph/sum-product algorithm/iterative detector/LDPC decoder引用本文复制引用
出版年
2013