深空通信中Turbo码的编译码技术

Turbo Channel Encoding and Decoding Technologies for Deep Space Communication

介绍了深空通信的发展现状和Turbo的国内外最新发展动态。分别对Turbo码的编码器部分,交织器部分和译码器部分的构成和性能进行了详细的分析,并着重论述了SOVA译码算法的原理及其译码过程。最后通过Matlab仿真图验证不同的交织长度以及各种译码算法所具有的译码性能和译码复杂度之间的关系。

This artide gives a primary introduction on the basic principle and the devdopment present condition about deep space communication （DSC）. It analyzes in details about the structure and performance of coder part, interweaver part and decoder part. Turbo codes provides up to 0.8dB improvement in Eb/No over the current best codes used by deep space mission. In this paper, an overview of the trend in DSC and the rationale of Turbo codes are introduced briefly. According to the process of matlab simulating, more attention should be paid to optimize the arithmatic of decoding.