大型无线网络中的多跳网络编码

Multi-hop Network Coding in Large-scale Wireless Networks

基于网络编码的协作分集技术是目前的无线网络的研究热点。许多研究从理论上证明了它的有效性,但是对于大型网络中网络编码技术的应用的研究涉及较少。采用LDPC码的结构研究了协作分集网络中的网络编码构造,并把它拓展到多跳网络中。这种方法可以根据瞬时的网络拓扑结构形成网络编码,从而适应移动环境下多节点的随机接入,通过获得的网络编码增益提高网络可靠性。

Cooperative diversity based on network coding is widely researched in the field of wireless communication. While some former work has theoretically proved its efficiency, there is a lack of application and reference in large - scale network for network coding. This paper introduces a class of network coding based on LDPC code for a cooperative network and extends it to multi - hop network. It may match the network coding on instantaneous network topologies, and increase the reliability by network coding gain.