摘要
基于TCP协议的大部分网络通信都将接收到的数据包当作一个有序序列进行处理.TCP协议的这种有序序列模式限制了其在大量数据传输或将数据分布到大量用户的应用.基于数字喷泉码的数据传输模式不需要有序的数据序列,从而简化了网络中数据的传输方式,使得数字喷泉码成为一类适用于可靠通信的有效编码技术,而具有广阔的应用前景.本文综述了几类典型数字喷泉码的原理及其优缺点;探讨了这几类数字喷泉码的具体应用;指出了数字喷泉码研究中需要解决的一些关键问题.最后,对数字喷泉码的发展前景及研究方向进行展望.
Most network communication based on TCP treats data as an ordered sequence of packets. This ordered-sequence paradigm of TCP is too restrictive when the data is large or is to be distributed to a large number of users. In the data transmission paradigm based on digital fountain codes, obviating the need for ordered data simplifies data delivery. Thus, digital fountain codes are a class of efficient codes which are suitable for reliable communication, and have been widely used in many respects. This paper surveys the principles of a few types of digital fountain codes and their advantages and disadvantages, and investigates their engineering applications. Some key problems needed to be solved in the study of digital fountain codes are pointed out. Finally, the future development and research directions of digital fountain codes are discussed.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2009年第7期1571-1577,共7页
Acta Electronica Sinica
基金
国家自然科学基金(No.60573034)
