Turbo乘积码技术及其性能研究

Turbo Product Code Technology and Its Performance Analysis

在分析Turbo乘积码的基本编译码原理的基础上，比较了未编码与编码后系统的差错性能，研究了选取不同分量码、不同迭代次数对TPC译码性能的影响。在不同迭代次数与分量码情况下，进行了仿真实验。仿真实验表明，在相同的差错性能条件下，采用TPC码能带来5－6dB的编码增益。TPC译码算法简单，没有错误平层，硬件实现复杂度较小，是一种非常实用的信道编码方式。

This paper analyses the basic principle of TPC,compares the error performance in the system which has been applied with TPC with the uncoded system,studies the influences which different block codes and iterative numbers to TPC decode performance, under the circumstances of different iteration numbers and block codes, experiment simulation is carried on. The simulation results indicate that introduction of TPC can get the code gain of 5-6 dB. TPC decoding algorithm is simple, and doesn＇t have the error floor, the complexity of its hardware implementation is smaller,it is a kind of practical channel coding method.