无线Mesh网的物理层网络编码方案

Physical Layer Network Coding in Wireless Mesh Network

无线网状网是传统组网方式的变革,网中的节点之间相互通信,构成多点到多点的网状结构,是一个大型的无线中继网络,对无线中继网络物理层的研究集中于网络编码,以及结合逼近香农极限的良好性能的低密度奇偶校验码,提出了基于物理层的结合网络编码和信道编码的方案,该方案不仅利用了双向中继的提升吞吐率的特性,而且设计了并行迭代算法来降低译码的复杂度。

Wireless Mesh Network is different from traditional network mode,the nodes in the network communicate with each other via relay which forms a large wireless network. In this paper, Research on physical layer of wireless relay network focus on network coding, and with the LDPC which has the approaching Shannon limit performance, a joint network-channel coding scheme has been proposed. This scheme not only takes advantage of the two-way characteristic to improve the throughput, but also designs a parallel iterative algorithm to reduce the complexity of decoding.