TD-LTE系统咬尾卷积码译码算法研究  

Research on decoding algorithm of tailbiting convolutional codes used in the TD-LTE system

作　　者：李佳[1,2] 朱宇霞[1,2] 洪媛[2] 

机构地区：[1]武汉邮电科学研究院,武汉437000 [2]北京北方烽火科技有限公司,北京100085

出　　处：《信息技术》2015年第9期144-146,150,共4页Information Technology

摘　　要：在TD-LTE系统中,要获得准确可靠的信道传输,就要在发送端采用差错控制编码。而卷积码作为一种前向纠错技术被应用于很多现代通信系统中,此外采用卷积码编码的数据在接收端通常都采用Viterbi译码来实现。首先介绍了咬尾卷积码编码原理,然后研究了译码的两种方法并在此基础上提出改进算法,最后通过性能仿真以及译码复杂度的比较来分析这三种译码算法。In the TD-LTE system, to obtain accurate and reliable channel transmission, the error control coding technique is used at the sending end. The convolutional code as a forward error correction technique is used in many contemporary communications systems, In addition, the data encoded by convolutional codes will use Viterbi decoding at the receiving end usually. This paper introduces the coding principle of tail-biting convolutional codes, then presents two methods of decoding and on this basis proposed the improved algorithm. Finally, through the simulation performance and comparing decoding complexity it analyzes these three decoding algorithms.

关 键 词：咬尾卷积码 VITERBI译码 MATLAB仿真 

分 类 号：TN764[电子电信—电路与系统]