基于MSK和LT码的联合迭代译码算法  

Joint Soft Iterative Decoding Algorithm Based on MSK and LT Codes

作　　者：胡俊红[1] 高宏峰[1] 师歌[1] 

机构地区：[1]河南科技大学电子信息工程学院,河南洛阳471023

出　　处：《电视技术》2013年第1期126-129,共4页Video Engineering

基　　金：河南科技大学基金项目(2007ZY013)

摘　　要：传统的简单级联编码调制系统在译码时会造成软信息损失。提出了一种基于MSK和LT码的联合软迭代译码算法,设计了算法的系统模型。利用LT码的软译码和MSK调制的SISO算法,进行联合软迭代译码,提高了编码调制系统的性能。仿真结果表明:在误码率为10-4时,提出的算法比传统的简单级联编码调制算法约有1.5 dB的编码增益。At the receiving end, conventional fixed rate simple serial concatenated coded modulation systems lost some soft information value for its decoding way on AWGN channels. The joint soft iterative decoding algorithm based on MSK and LT Codes and its system model are proposed in this paper. Utilizing the SISO algorithm of the MSK and the LT code soft decoding, the BER performance is improved obviously through joint iterative decoding. The simulation results show that compared to the LT codes simple serial concatenated coded modulation system, the new system gets about 1.5 dB coding gain at BER = 10^-4

关 键 词：LT码 软译码 MSK SISO算法 联合软迭代 

分 类 号：TN927[电子电信—通信与信息系统]