一种联合信源信道匹配的视频传输方法

An Approach of Joint Source-Channel Matching Video Transmission

介绍了一种实现联合信源-信道编码的通用的新方法—联合信源-信道匹配。该方法思想巧妙,通过将有限的通信系统资源在信源和信道编码器之间进行巧妙合理的分配,从而获得最优的系统整体传输性能。并且,该方法并不仅局限于特定的信源-信道编码器对,可适用于任何一种信源-信道编码器对共享有限系统资源的情况,具有很好的通用性。仿真实验证明了JSCM通用视频传输系统能获得比传统的固定码率分配系统更高的整体性能增益。

In this paper,a new general approach,joint source -channel matching(JSCM),which realizes joint source -channel codi ng(JSCC),is introduced.JSCMis an elegant concept,which intelligent-ly allocates limited system resourc es between the source and channel encoders to achieve the optimal over-all transmission performance.In ad dition,this approach is not limited to specific source -channel coder pairs,but is truly general to perform well with a wide range of source -channel coder pairs sharing some system resources that are limited.T he simulation results demonstrate t he effectiveness of our proposed JSCM general system,which can obtain higher performance gains than conventional fixed -parameter sys-tems.