【作者】 张文斌；

【导师】 盛敏；

【作者基本信息】 西安电子科技大学 ， 通信与信息系统， 2011， 硕士

【摘要】 近年来网络编码容量问题成为理论研究的热点,但现在网络编码容量的研究都假设网络是静止的,极少涉及到节点移动情况下的研究,因此本文主要从节点移动性角度来分析MANET的网络编码容量。首先,本文研究了在不考虑噪声和干扰时MANET的网络编码容量。本文提出用权重随机几何图模型来模拟MANET,该模型用节点间的距离来判断两个节点是否连通,并通过Chernoff Bound定理来证明了网络编码容量的上下限值。最后在不同移动模型下和网络保持不同连通度情况下对网络编码容量进行了仿真。然后,本文研究了在考虑噪声和干扰时MANET的网络编码容量。本文采用常用的SINR模型来判断两个节点是否连通,考虑到网络模型的变化,参考了文献[31]里的Coupling Methods得到了网络编码容量的上下限值,最后对不同移动模型下的网络编码容量进行了仿真。更多还原

【Abstract】 Nowadays, the problem of network coding capacity has become a hot topic. Previous work on network coding capacity of wireless networks has focused on the assumption that the network is stationary. However, in this paper, network coding capacity is studied in dynamic network caused by the node’s mobility.On the one hand, this paper first studies the network coding capacity of MANET without the consideration of noise and interference. The weighted random geometric model is used to model MANET; we judge the connection of two nodes by the distance between them and verify the concentration feature of network coding capacity with the help of Chernoff Bound Theorem. And then, we have simulated the network coding capacity under the condition of different mobility models and diverse network connectivity degrees.On the other hand, this paper makes a research on the network coding capacity of MANET with the consideration of noise and interference. Here the most common SINR model is used to judge whether the two nodes are well connected. Considering the fact that the network model is changeable with noise and interference, network coding capacity’s concentration feature can be concluded from the reference [31] using the Coupling Methods. At last, we also apply the Ford-Fulkerson Method to simulate the MANET’s network coding capacity under the condition of different mobility models.更多还原