Variable-rate convolutional network coding  

作　　者：MA Song-ya CHEN Xiu-bo LUO Ming-xing 

机构地区：[1]Information Security Center, State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications, Beijing 100876, China [2]Key Laboratory of Network and Information Attack and Defense Technology, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China [3]National Engineering Laboratory for Disaster Backup and Recovery, Beijing University of Posts and Telecommunications, Beijing 100876, China [4]School of Mathematics and Information Sciences, Henan University, Kaifeng 475004, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第3期91-96,117,共7页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China and the Research Grants Council of Hong Kong Joint Research Scheme (60731160626);the National Natural Science Foundation of China (60821001);the Fundamental Research Funds for the Central Universities (BUPT2009RC0220);the 111 Project (B08004)

摘　　要：Four types of variable-rate convolutional network codes are investigated over a single-source finite cyclic network. It is found that variable-rate generic, dispersion and broadcast can be implemented on the same network without changing the local encoding kernels of the non-source nodes. The efficient implementation has the advantage that each non-source node only needs to store one copy of the local encoding kernel within a session. However, it is also shown by an example that variable-rate multicast may not always be implemented under the above condition.

关 键 词：variable-rate convolutional generic convolutional dispersion convolutional broadcast convolutional multicast 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] TN927.2[自动化与计算机技术—计算机科学与技术]