与经典信道相关的网络编码

Classic Channels Related Network Coding

传统的网络信息流传输方式是存储转发,但通常无法达到通信的最大流界。为了实现更高的传输效率,Ahlswede等人提出采用网络编码的方法,不但可以提高网络吞吐量,而且在普适性、鲁棒性、可靠性和安全性等方面都具有优势。网络中的信道通常是有噪声的,目前网络编码理论的研究重点包括经典多用户信道、网络-信道编码分离和网络安全编码等问题。

The traditional networks transmit information in a store-and-forward manner Unfortunately, the coding rate cannot achieve the max-flow bound the reliable transmission efficiency, Ahlswede et al. introduced the theory. Network coding can not only increase network throughput, n order to improve network coding but also advance in data universalness, robustness, reliability and security. Generally, the channels in a network are interfered by noises. Therefore, the most important research areas in the network coding theory include multiple user channel, separation theorem for network coding and privacy capacity region.