一种改进的Turbo码Log-MAP译码算法  

Improved Log-MAP Algorithm for Turbo-Codes Decoding

作　　者：李冬霞[1] 梁栋[1] 

机构地区：[1]中国民航大学电子信息工程学院,天津300300

出　　处：《中国民航大学学报》2007年第1期49-51,共3页Journal of Civil Aviation University of China

基　　金：中国民航大学基金项目（k22024）

摘　　要：在传统Turbo码Log-MAP译码算法的基础上,借鉴已有的简化算法,提出了一种改进的Log-MAP译码算法。仿真结果表明,新的算法在大大降低译码复杂度的同时较好地保持了译码性能,使其非常接近Log-MAP算法的译码性能;同时也非常有利于硬件实现。Based on the conventional Log-MAP algorithm for Turbo-codes decoding and the existing algorithm for simplifying Log-MAP,an improved algorithm is presented in this paper. Simulation results show that the proposed algorithm has performance very close to the Log-MAP algorithm for Turbo-codes decoding and can decrease the decoding complexity greatly at the same time. In addition, realization of the new algorithm by hardware is very easy.

关 键 词：LOG-MAP算法 MAX-LOG-MAP算法 迭代译码 

分 类 号：TN919.3[电子电信—通信与信息系统]