论文部分内容阅读
提出一种删除信道下不等差错保护(UEP)的系统Raptor码.该码采用简化的扩展窗喷泉码技术(EWF)对RFC 5053标准系统Raptor码的中间符号进行编码,得到的编码符号在具有UEP性能的同时仍能维持系统性.对提出的UEP系统Raptor码分别给出了分级的编码和解码算法,分级算法可以在很大程度上兼容并应用经过优化的标准Raptor码的现有编解码算法.试验结果表明:该UEP系统Raptor码具有良好的UEP性能.对实验数据的分析和理论推导得到该码的最佳编码参数取值方程,为该码在不同信道条件下的应用提供了参数选择的依据.
This paper proposes a system Raptor code to delete UEP, which encodes the intermediate symbols of RFC 5053 standard system Raptor codes by using simplified extended fountain code (EWF) UEP performance while still maintaining the system.The proposed UEP system Raptor codes were given hierarchical encoding and decoding algorithm, the classification algorithm can be largely compatible with the application of the standard Raptor code optimized existing codec Algorithm.The experimental results show that the UEP system Raptor code has a good UEP performance.Experimental data analysis and theoretical derivation of the code obtained the optimal coding parameters of the value equation for the code in the application of different channel parameters provided Basis of choice.