Turbo码的编译码及其性能仿真

Encoding and Decoding of Turbo Code and Its Performance Simulation

本论文旨在研究Turbo码的几种迭代译码算法,包括Log-MAP译码算法和Max-Log-MAP译码算法。在介绍Turbo码基础并推导Turbo码的各种译码算法(Max-Log-MAP算法、Log-MAP算法和SOVA算法)的原理后,通过性能仿真,我们分析了迭代次数、交织长度等参数对Turbo码的纠错能力的影响,并横向比较了三种算法的性能,从而得出结论。

This article is to study several iterative decoding algorithms of Turbo code,including LOG-MAP decoding algorithm and MAXLOG-MAP decoding algorithm.After introducing the fundamentals of Turbo code and deriving various decoding algorithms(Max log map algorithm,log map and SOVA algorithm)of turbo code,simulations of these decoding algorithms are performed.Based on the simulation results,we analyze the impact of iteration number and interleaver length on the error correcting capabilities of Turbo codes.Horizontal comparisons of the performances of these three kinds of decoding algorithms are also made,and get the conclusions.