基于卷积码的Turbo码交织器的设计  

Design of Interleaver of Turbo Code Based on Convolutional Codes

作　　者：吴克颖[1] 李晖[1] 王育民[1] 

机构地区：[1]西安电子科技大学ISN国家重点实验室,西安710071

出　　处：《计算机学报》2000年第4期382-385,共4页Chinese Journal of Computers

基　　金：国家自然科学基金!(69720006)

摘　　要：以（３７，２１）ＲＳＣ码为例，提出对基于卷积码的Ｔｕｒｂｏ码的交织器的设计方案，并推广到一般的ＲＳＣ码．分析了该交织对Ｔｕｒｂｏ码距离谱的影响．给出了运用该交织后分量码的选取原则．可以看到，该交织器设计方案在误比特率为１０^（－５）时将产生明显的作用。It is well known that Turbo codes can approach Shannon limit, that is due to the using of interleaver which changes the weight distribution of the output Turbo codes. Therefor, Selecting a good interleaver can increase Turbo code's minimum distance and decrease the number of low weight codes, accordingly, the perfect performance of Turbo codes can be obtained. In this paper, the design of interleaver for Turbo codes based on convolutional codes is examined, and a scheme is proposed using (37, 21 )RSC as constituent code. The scheme is generalized to Turbo codes based on common RSC. Then the influence of proposed interleaver on the distance spectrum of Turbo codes is analyzed. And the choice of constituent codes is discussed when using the proposed interleaver. It is obvious that the scheme proposed in this paper will take effect at the bit error rate 10^-5.

关 键 词：TURBO码 卷积码 交织器 信息序列 信道编码 

分 类 号：TN911.22[电子电信—通信与信息系统]