Turbo码误比特率分布的估算  

Estimation of the BER Distribution of Turbo Codes

作　　者：邵霞[1] 张卫党[2] 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]郑州大学信息工程学院,河南郑州450001

出　　处：《华北水利水电学院学报》2011年第5期125-127,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：河南省教育厅自然科学研究项目(2010B510020)

摘　　要：为了计算出每一个信息比特位的误比特率,基于一致界,给出了一个估计误比特率分布的理论公式.并将公式应用到Turbo码中,利用几个实例和仿真结果进行比较.结果显示,公式可以较好地反映出Turbo码的误比特率分布,从而为研究Turbo码的误比特率特性,尤其是不等差错保护特性提供了帮助.最后,将此公式应用到平均误比特率的估算中,得到了较好的结果.In order to estimate the BER of each information bit,a theoretical formula was derived to estimate the BER distribution based on the union bound.Then the formula was applied to Turbo codes and several examples were used to compare with the simulation results.It showed that the formula could better reflect the BER distribution of Turbo codes,which would be helpful for studying the BER characteristics of Turbo codes,especially the unequal error protection characteristics.Finally,the formula was also applied to estimating the average BER and better results were achieved.

关 键 词：信道编码 TURBO码 误比特率 不等保护 位移控制 扩展线性化 仿真 

分 类 号：TN911.22[电子电信—通信与信息系统]