深空通信中码字复接结构Turbo译码器设计  

The Code Word Connecting Design for Turbo Decoder in Deep Space Communication

作　　者：张英[1] 陶磊岩 

机构地区：[1]北京航天自动控制研究所,北京100854 [2]北京遥感设备研究所,北京100854

出　　处：《航天控制》2011年第3期65-68,共4页Aerospace Control

摘　　要：码字复接结构Turbo译码器,有效解决了Turbo码与一些调制模块迭代级联时产生的信息损失问题,使得在调制迭代级联系统中,译码器能有效反馈包括信息位和校验位的全码字软信息。本文以与CPM调制级联系统为例,采用11种编码构造方案,分别对512,1024,2500码长的Turbo码方案进行对比。仿真结果表明,该方案较好地实现了Tubo码在调制迭代级联系统中的应用,其中以(7,5)Turbo码结构表现最优。The code word connecting design for the Turbo decoder effectively resolves the information losing problem in the Turbo code and modulation concatenated system.It has better performance of rendering whole code information,including info bits and parity bits in the processes of concatenated communication system.In this paper,the system is figured out as CPM and the Turbo code,adopting eleven kinds of code design methods and every method separated with 512,1024 and 2500 frame length to compare.The simulation results show that the BER can achieve 9.8e-5,which is better than the traditional addition structure of e-1 quantity rank under the 2db SNR.

关 键 词：纠错编码 迭代级联系统 TURBO译码 

分 类 号：TN911.22[电子电信—通信与信息系统]