一种基于数字喷泉技术的高效网络传输方法  

Efficient method for network transmission based on digital fountain technology

作　　者：薛亚辉[1] 王剑[1] 王非非[1] 

机构地区：[1]中国传媒大学广播电视数字化教育部工程研究中心,北京100024

出　　处：《太赫兹科学与电子信息学报》2013年第2期309-313,共5页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家科技支撑计划课题资助项目(2012BAH17B01)

摘　　要：针对网络时延和丢包率较大情况下传输控制协议数据传输带宽利用率低下的问题,提出了一种基于数字喷泉技术的高效网络传输方法。介绍了数字喷泉码的编译码原理,设计并实现了基于Raptor码和用户数据包协议的高效可靠数据传输系统,给出实际测试结果。实验结果表明,该方法的传输效率较传统方法有较大幅度的提高。According to the problem of low efficiency of the network transmission system based on Transmission Control Protocol（TCP） in the case of large time delay and loss rate, this paper proposes an efficient method for network transmission system based on digital fountain. The principle of the digital fountain is described and a new system is designed and implemented on the basis of Raptor codes and User Datagram Protocol（UDP）. The results are given and indicate that the transmission efficiency of this new method is greatly improved compared to that of the traditional one.

关 键 词：网络传输 数字喷泉 RAPTOR码 用户数据包协议 

分 类 号：TN919.3[电子电信—通信与信息系统]