the implementation of the convolutional code is also discussed in this paper . finally, the flow chart of the algorithms of the system is described 最后,在介绍了差错控制编码的原理后讨论了如何实现卷积码的编解码算法。
to decrease error rate, we preprocess the hidden information by convolutional code and decode them by viterbi decoder . 2 在嵌入信息之前先将隐秘信息进行卷积编码,对从隐藏图像检测出的信息使用viterbi译码,以降低误码率。
the thesis mainly focuses on the encoding and decoding to the systemic convolutional code with programming language, which is prescribed in the intelsat iess 309 standard 本文主要针对intelsatiess309协议标准中所采用的系统卷积码,仿真并编程实现其编码和译码。
first, this paper analyses a bicm model and the bicm _ id model based on combination of convolutional code and 8psk modulation, and introduces the principle and key technique 本文分析了一个基于卷积码和8psk调制相结合的bicm模型和相应的bicm_id模型,介绍了它们的原理和其中的关键技术。
common telemetry coding and decoding methods, such as rs coding and decoding, convolutional coding and decoding, are introduced, applied in satellite data and realized by programming 论述了常用的遥测系统的编码与解码方式,并通过编程实现了对卫星数据的rs编码译码以及卷积码编码译码。