Turbo译码算法的改进及其在卫星通信链路中的仿真  

The Improved Algorithm of Turbo Decoding and Simulation in Satellite Communication System

作　　者：曹型兵[1] 李超杰[1] 

机构地区：[1]重庆邮电大学通信工程应用研究所,重庆400065

出　　处：《现代电信科技》2014年第5期56-60,共5页Modern Science & Technology of Telecommunications

摘　　要：Turbo码的优越性使其在3G、4G及卫星通信等领域应用广泛。文章在分析了几种算法的基础上对Max-log-MAP算法进行了改进,引入迭代译码停止准则,并对算法进行了定点和加滑动窗处理,从而降低了译码复杂度,减少了译码时间,使Turbo译码容易通过硬件实现。Turbo code is widely used in the third and fourth generation mobile communication and satellite communication systems because of its excellent per-formance. The thesis has improved the max-log-MAP algorithm after analyzed several decoding algorithms. The thesis has adopted stop criterion, fixed-point data and sliding-window schemes to reduce calculation, storage and delay of decoding. So Turbo code is im-plemented easily in hardware.

关 键 词：TURBO译码 迭代停止准则 定点化 滑动窗 

分 类 号：TN911.22[电子电信—通信与信息系统]